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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Core global functions for Blog.
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*
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* @package moodlecore
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* @subpackage blog
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* @copyright 2009 Nicolas Connault
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/*
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* Library of functions and constants for blog
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*/
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require_once($CFG->dirroot .'/blog/rsslib.php');
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/**
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* User can edit a blog entry if this is their own blog entry and they have
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* the capability moodle/blog:create, or if they have the capability
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* moodle/blog:manageentries.
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*
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* This also applies to deleting of entries.
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*/
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function blog_user_can_edit_entry($blogentry) {
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global $USER;
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$sitecontext = context_system::instance();
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if (has_capability('moodle/blog:manageentries', $sitecontext)) {
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return true; // Can edit any blog entry.
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}
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if ($blogentry->userid == $USER->id && has_capability('moodle/blog:create', $sitecontext)) {
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return true; // Can edit own when having blog:create capability.
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}
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return false;
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}
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/**
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* Checks to see if a user can view the blogs of another user.
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* Only blog level is checked here, the capabilities are enforced
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* in blog/index.php
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*/
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function blog_user_can_view_user_entry($targetuserid, $blogentry=null) {
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global $CFG, $USER, $DB;
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if (empty($CFG->enableblogs)) {
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return false; // Blog system disabled.
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}
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if (isloggedin() && $USER->id == $targetuserid) {
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return true; // Can view own entries in any case.
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}
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$sitecontext = context_system::instance();
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if (has_capability('moodle/blog:manageentries', $sitecontext)) {
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return true; // Can manage all entries.
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}
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// If blog is in draft state, then make sure user have proper capability.
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if ($blogentry && $blogentry->publishstate == 'draft' && !has_capability('moodle/blog:viewdrafts', $sitecontext)) {
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return false; // Can not view draft of others.
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}
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// If blog entry is not public, make sure user is logged in.
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if ($blogentry && $blogentry->publishstate != 'public' && !isloggedin()) {
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return false;
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}
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// If blogentry is not passed or all above checks pass, then check capability based on system config.
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switch ($CFG->bloglevel) {
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case BLOG_GLOBAL_LEVEL:
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return true;
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break;
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case BLOG_SITE_LEVEL:
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if (isloggedin()) { // Not logged in viewers forbidden.
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return true;
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}
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return false;
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break;
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case BLOG_USER_LEVEL:
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default:
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// If user is viewing other user blog, then user should have user:readuserblogs capability.
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$personalcontext = context_user::instance($targetuserid);
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return has_capability('moodle/user:readuserblogs', $personalcontext);
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break;
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}
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}
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/**
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* remove all associations for the blog entries of a particular user
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* @param int userid - id of user whose blog associations will be deleted
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*/
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function blog_remove_associations_for_user($userid) {
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global $DB;
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throw new coding_exception('function blog_remove_associations_for_user() is not finished');
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/*
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$blogentries = blog_fetch_entries(array('user' => $userid), 'lasmodified DESC');
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foreach ($blogentries as $entry) {
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if (blog_user_can_edit_entry($entry)) {
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blog_remove_associations_for_entry($entry->id);
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}
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}
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*/
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}
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/**
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* remove all associations for the blog entries of a particular course
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* @param int courseid - id of user whose blog associations will be deleted
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*/
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function blog_remove_associations_for_course($courseid) {
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global $DB;
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$context = context_course::instance($courseid);
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$DB->delete_records('blog_association', array('contextid' => $context->id));
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}
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/**
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* Remove module associated blogs and blog tag instances.
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*
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* @param int $modcontextid Module context ID.
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*/
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function blog_remove_associations_for_module($modcontextid) {
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global $DB;
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if (!empty($assocblogids = $DB->get_fieldset_select('blog_association', 'blogid',
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'contextid = :contextid', ['contextid' => $modcontextid]))) {
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list($sql, $params) = $DB->get_in_or_equal($assocblogids, SQL_PARAMS_NAMED);
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$DB->delete_records_select('tag_instance', "itemid $sql", $params);
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$DB->delete_records_select('post', "id $sql AND module = :module",
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array_merge($params, ['module' => 'blog']));
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$DB->delete_records('blog_association', ['contextid' => $modcontextid]);
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}
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}
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/**
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* Given a record in the {blog_external} table, checks the blog's URL
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* for new entries not yet copied into Moodle.
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* Also attempts to identify and remove deleted blog entries
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*
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* @param object $externalblog
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* @return boolean False if the Feed is invalid
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*/
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function blog_sync_external_entries($externalblog) {
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global $CFG, $DB;
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require_once($CFG->libdir . '/simplepie/moodle_simplepie.php');
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$rss = new moodle_simplepie();
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$rssfile = $rss->registry->create('File', array($externalblog->url));
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$filetest = $rss->registry->create('Locator', array($rssfile));
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if (!$filetest->is_feed($rssfile)) {
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$externalblog->failedlastsync = 1;
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$DB->update_record('blog_external', $externalblog);
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return false;
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} else if (!empty($externalblog->failedlastsync)) {
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$externalblog->failedlastsync = 0;
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$DB->update_record('blog_external', $externalblog);
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}
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$rss->set_feed_url($externalblog->url);
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$rss->init();
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if (empty($rss->data)) {
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return null;
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}
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// Used to identify blog posts that have been deleted from the source feed.
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$oldesttimestamp = null;
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$uniquehashes = array();
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foreach ($rss->get_items() as $entry) {
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// If filtertags are defined, use them to filter the entries by RSS category.
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if (!empty($externalblog->filtertags)) {
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$containsfiltertag = false;
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$categories = $entry->get_categories();
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$filtertags = explode(',', $externalblog->filtertags);
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$filtertags = array_map('trim', $filtertags);
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$filtertags = array_map('strtolower', $filtertags);
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if (!empty($categories)) {
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foreach ($categories as $category) {
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if (in_array(trim(strtolower($category->term)), $filtertags)) {
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$containsfiltertag = true;
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}
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}
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}
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if (!$containsfiltertag) {
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continue;
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}
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}
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$uniquehashes[] = $entry->get_permalink();
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$newentry = new stdClass();
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$newentry->userid = $externalblog->userid;
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$newentry->module = 'blog_external';
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$newentry->content = $externalblog->id;
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$newentry->uniquehash = $entry->get_permalink();
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$newentry->publishstate = 'site';
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$newentry->format = FORMAT_HTML;
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// Clean subject of html, just in case.
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$newentry->subject = clean_param($entry->get_title(), PARAM_TEXT);
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// Observe 128 max chars in DB.
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// TODO: +1 to raise this to 255.
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if (core_text::strlen($newentry->subject) > 128) {
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$newentry->subject = core_text::substr($newentry->subject, 0, 125) . '...';
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}
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$newentry->summary = $entry->get_description();
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// Used to decide whether to insert or update.
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// Uses enty permalink plus creation date if available.
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$existingpostconditions = array('uniquehash' => $entry->get_permalink());
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// Our DB doesnt allow null creation or modified timestamps so check the external blog supplied one.
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$entrydate = $entry->get_date('U');
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if (!empty($entrydate)) {
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$existingpostconditions['created'] = $entrydate;
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}
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// The post ID or false if post not found in DB.
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$postid = $DB->get_field('post', 'id', $existingpostconditions);
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$timestamp = null;
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if (empty($entrydate)) {
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$timestamp = time();
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} else {
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$timestamp = $entrydate;
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}
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// Only set created if its a new post so we retain the original creation timestamp if the post is edited.
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if ($postid === false) {
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$newentry->created = $timestamp;
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}
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$newentry->lastmodified = $timestamp;
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if (empty($oldesttimestamp) || $timestamp < $oldesttimestamp) {
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// Found an older post.
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$oldesttimestamp = $timestamp;
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}
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if (core_text::strlen($newentry->uniquehash) > 255) {
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// The URL for this item is too long for the field. Rather than add
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// the entry without the link we will skip straight over it.
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// RSS spec says recommended length 500, we use 255.
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debugging('External blog entry skipped because of oversized URL', DEBUG_DEVELOPER);
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continue;
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}
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if ($postid === false) {
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$id = $DB->insert_record('post', $newentry);
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// Set tags.
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if ($tags = core_tag_tag::get_item_tags_array('core', 'blog_external', $externalblog->id)) {
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core_tag_tag::set_item_tags('core', 'post', $id, context_user::instance($externalblog->userid), $tags);
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}
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} else {
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$newentry->id = $postid;
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$DB->update_record('post', $newentry);
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}
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}
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// Look at the posts we have in the database to check if any of them have been deleted from the feed.
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// Only checking posts within the time frame returned by the rss feed. Older items may have been deleted or
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// may just not be returned anymore. We can't tell the difference so we leave older posts alone.
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$sql = "SELECT id, uniquehash
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FROM {post}
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WHERE module = 'blog_external'
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AND " . $DB->sql_compare_text('content') . " = " . $DB->sql_compare_text(':blogid') . "
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AND created > :ts";
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$dbposts = $DB->get_records_sql($sql, array('blogid' => $externalblog->id, 'ts' => $oldesttimestamp));
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$todelete = array();
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foreach ($dbposts as $dbpost) {
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if ( !in_array($dbpost->uniquehash, $uniquehashes) ) {
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$todelete[] = $dbpost->id;
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}
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}
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$DB->delete_records_list('post', 'id', $todelete);
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$DB->update_record('blog_external', array('id' => $externalblog->id, 'timefetched' => time()));
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}
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/**
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* Given an external blog object, deletes all related blog entries from the post table.
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* NOTE: The external blog's id is saved as post.content, a field that is not oterhwise used by blog entries.
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* @param object $externablog
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*/
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function blog_delete_external_entries($externalblog) {
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global $DB;
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require_capability('moodle/blog:manageexternal', context_system::instance());
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$DB->delete_records_select('post',
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"module='blog_external' AND " . $DB->sql_compare_text('content') . " = ?",
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array($externalblog->id));
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}
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/**
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* This function checks that blogs are enabled, and that the user can see blogs at all
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* @return bool
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*/
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function blog_is_enabled_for_user() {
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global $CFG;
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return (!empty($CFG->enableblogs) && (isloggedin() || ($CFG->bloglevel == BLOG_GLOBAL_LEVEL)));
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}
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/**
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* This function gets all of the options available for the current user in respect
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* to blogs.
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*
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* It loads the following if applicable:
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* - Module options {@see blog_get_options_for_module}
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* - Course options {@see blog_get_options_for_course}
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* - User specific options {@see blog_get_options_for_user}
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* - General options (BLOG_LEVEL_GLOBAL)
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*
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* @param moodle_page $page The page to load for (normally $PAGE)
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* @param stdClass $userid Load for a specific user
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* @return array An array of options organised by type.
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*/
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function blog_get_all_options(moodle_page $page, stdClass $userid = null) {
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global $CFG, $DB, $USER;
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$options = array();
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// If blogs are enabled and the user is logged in and not a guest.
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if (blog_is_enabled_for_user()) {
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348 |
// If the context is the user then assume we want to load for the users context.
|
|
|
349 |
if (is_null($userid) && $page->context->contextlevel == CONTEXT_USER) {
|
|
|
350 |
$userid = $page->context->instanceid;
|
|
|
351 |
}
|
|
|
352 |
// Check the userid var.
|
|
|
353 |
if (!is_null($userid) && $userid !== $USER->id) {
|
|
|
354 |
// Load the user from the userid... it MUST EXIST throw a wobbly if it doesn't!
|
|
|
355 |
$user = $DB->get_record('user', array('id' => $userid), '*', MUST_EXIST);
|
|
|
356 |
} else {
|
|
|
357 |
$user = null;
|
|
|
358 |
}
|
|
|
359 |
|
|
|
360 |
if ($CFG->useblogassociations && $page->cm !== null) {
|
|
|
361 |
// Load for the module associated with the page.
|
|
|
362 |
$options[CONTEXT_MODULE] = blog_get_options_for_module($page->cm, $user);
|
|
|
363 |
} else if ($CFG->useblogassociations && $page->course->id != SITEID) {
|
|
|
364 |
// Load the options for the course associated with the page.
|
|
|
365 |
$options[CONTEXT_COURSE] = blog_get_options_for_course($page->course, $user);
|
|
|
366 |
}
|
|
|
367 |
|
|
|
368 |
// Get the options for the user.
|
|
|
369 |
if ($user !== null and !isguestuser($user)) {
|
|
|
370 |
// Load for the requested user.
|
|
|
371 |
$options[CONTEXT_USER + 1] = blog_get_options_for_user($user);
|
|
|
372 |
}
|
|
|
373 |
// Load for the current user.
|
|
|
374 |
if (isloggedin() and !isguestuser()) {
|
|
|
375 |
$options[CONTEXT_USER] = blog_get_options_for_user();
|
|
|
376 |
}
|
|
|
377 |
}
|
|
|
378 |
|
|
|
379 |
// If blog level is global then display a link to view all site entries.
|
|
|
380 |
if (!empty($CFG->enableblogs)
|
|
|
381 |
&& $CFG->bloglevel >= BLOG_GLOBAL_LEVEL
|
|
|
382 |
&& has_capability('moodle/blog:view', context_system::instance())) {
|
|
|
383 |
|
|
|
384 |
$options[CONTEXT_SYSTEM] = array('viewsite' => array(
|
|
|
385 |
'string' => get_string('viewsiteentries', 'blog'),
|
|
|
386 |
'link' => new moodle_url('/blog/index.php')
|
|
|
387 |
));
|
|
|
388 |
}
|
|
|
389 |
|
|
|
390 |
// Return the options.
|
|
|
391 |
return $options;
|
|
|
392 |
}
|
|
|
393 |
|
|
|
394 |
/**
|
|
|
395 |
* Get all of the blog options that relate to the passed user.
|
|
|
396 |
*
|
|
|
397 |
* If no user is passed the current user is assumed.
|
|
|
398 |
*
|
|
|
399 |
* @staticvar array $useroptions Cache so we don't have to regenerate multiple times
|
|
|
400 |
* @param stdClass $user
|
|
|
401 |
* @return array The array of options for the requested user
|
|
|
402 |
*/
|
|
|
403 |
function blog_get_options_for_user(stdClass $user=null) {
|
|
|
404 |
global $CFG, $USER;
|
|
|
405 |
// Cache.
|
|
|
406 |
static $useroptions = array();
|
|
|
407 |
|
|
|
408 |
$options = array();
|
|
|
409 |
// Blogs must be enabled and the user must be logged in.
|
|
|
410 |
if (!blog_is_enabled_for_user()) {
|
|
|
411 |
return $options;
|
|
|
412 |
}
|
|
|
413 |
|
|
|
414 |
// Sort out the user var.
|
|
|
415 |
if ($user === null || $user->id == $USER->id) {
|
|
|
416 |
$user = $USER;
|
|
|
417 |
$iscurrentuser = true;
|
|
|
418 |
} else {
|
|
|
419 |
$iscurrentuser = false;
|
|
|
420 |
}
|
|
|
421 |
|
|
|
422 |
// If we've already generated serve from the cache.
|
|
|
423 |
if (array_key_exists($user->id, $useroptions)) {
|
|
|
424 |
return $useroptions[$user->id];
|
|
|
425 |
}
|
|
|
426 |
|
|
|
427 |
$sitecontext = context_system::instance();
|
|
|
428 |
$canview = has_capability('moodle/blog:view', $sitecontext);
|
|
|
429 |
|
|
|
430 |
if (!$iscurrentuser && $canview && ($CFG->bloglevel >= BLOG_SITE_LEVEL)) {
|
|
|
431 |
// Not the current user, but we can view and its blogs are enabled for SITE or GLOBAL.
|
|
|
432 |
$options['userentries'] = array(
|
|
|
433 |
'string' => get_string('viewuserentries', 'blog', fullname($user)),
|
|
|
434 |
'link' => new moodle_url('/blog/index.php', array('userid' => $user->id))
|
|
|
435 |
);
|
|
|
436 |
} else {
|
|
|
437 |
// It's the current user.
|
|
|
438 |
if ($canview) {
|
|
|
439 |
// We can view our own blogs .... BIG surprise.
|
|
|
440 |
$options['view'] = array(
|
|
|
441 |
'string' => get_string('blogentries', 'blog'),
|
|
|
442 |
'link' => new moodle_url('/blog/index.php', array('userid' => $USER->id))
|
|
|
443 |
);
|
|
|
444 |
}
|
|
|
445 |
if (has_capability('moodle/blog:create', $sitecontext)) {
|
|
|
446 |
// We can add to our own blog.
|
|
|
447 |
$options['add'] = array(
|
|
|
448 |
'string' => get_string('addnewentry', 'blog'),
|
|
|
449 |
'link' => new moodle_url('/blog/edit.php', array('action' => 'add'))
|
|
|
450 |
);
|
|
|
451 |
}
|
|
|
452 |
}
|
|
|
453 |
if ($canview && $CFG->enablerssfeeds) {
|
|
|
454 |
$options['rss'] = array(
|
|
|
455 |
'string' => get_string('rssfeed', 'blog'),
|
|
|
456 |
'link' => new moodle_url(rss_get_url($sitecontext->id, $USER->id, 'blog', 'user/'.$user->id))
|
|
|
457 |
);
|
|
|
458 |
}
|
|
|
459 |
|
|
|
460 |
// Cache the options.
|
|
|
461 |
$useroptions[$user->id] = $options;
|
|
|
462 |
// Return the options.
|
|
|
463 |
return $options;
|
|
|
464 |
}
|
|
|
465 |
|
|
|
466 |
/**
|
|
|
467 |
* Get the blog options that relate to the given course for the given user.
|
|
|
468 |
*
|
|
|
469 |
* @staticvar array $courseoptions A cache so we can save regenerating multiple times
|
|
|
470 |
* @param stdClass $course The course to load options for
|
|
|
471 |
* @param stdClass $user The user to load options for null == current user
|
|
|
472 |
* @return array The array of options
|
|
|
473 |
*/
|
|
|
474 |
function blog_get_options_for_course(stdClass $course, stdClass $user=null) {
|
|
|
475 |
global $CFG, $USER;
|
|
|
476 |
// Cache.
|
|
|
477 |
static $courseoptions = array();
|
|
|
478 |
|
|
|
479 |
$options = array();
|
|
|
480 |
|
|
|
481 |
// User must be logged in and blogs must be enabled.
|
|
|
482 |
if (!blog_is_enabled_for_user()) {
|
|
|
483 |
return $options;
|
|
|
484 |
}
|
|
|
485 |
|
|
|
486 |
// Check that the user can associate with the course.
|
|
|
487 |
$sitecontext = context_system::instance();
|
|
|
488 |
// Generate the cache key.
|
|
|
489 |
$key = $course->id.':';
|
|
|
490 |
if (!empty($user)) {
|
|
|
491 |
$key .= $user->id;
|
|
|
492 |
} else {
|
|
|
493 |
$key .= $USER->id;
|
|
|
494 |
}
|
|
|
495 |
// Serve from the cache if we've already generated for this course.
|
|
|
496 |
if (array_key_exists($key, $courseoptions)) {
|
|
|
497 |
return $courseoptions[$key];
|
|
|
498 |
}
|
|
|
499 |
|
|
|
500 |
if (has_capability('moodle/blog:view', $sitecontext)) {
|
|
|
501 |
// We can view!
|
|
|
502 |
if ($CFG->bloglevel >= BLOG_SITE_LEVEL) {
|
|
|
503 |
// View entries about this course.
|
|
|
504 |
$options['courseview'] = array(
|
|
|
505 |
'string' => get_string('viewcourseblogs', 'blog'),
|
|
|
506 |
'link' => new moodle_url('/blog/index.php', array('courseid' => $course->id))
|
|
|
507 |
);
|
|
|
508 |
}
|
|
|
509 |
// View MY entries about this course.
|
|
|
510 |
$options['courseviewmine'] = array(
|
|
|
511 |
'string' => get_string('viewmyentriesaboutcourse', 'blog'),
|
|
|
512 |
'link' => new moodle_url('/blog/index.php', array('courseid' => $course->id, 'userid' => $USER->id))
|
|
|
513 |
);
|
|
|
514 |
if (!empty($user) && ($CFG->bloglevel >= BLOG_SITE_LEVEL)) {
|
|
|
515 |
// View the provided users entries about this course.
|
|
|
516 |
$options['courseviewuser'] = array(
|
|
|
517 |
'string' => get_string('viewentriesbyuseraboutcourse', 'blog', fullname($user)),
|
|
|
518 |
'link' => new moodle_url('/blog/index.php', array('courseid' => $course->id, 'userid' => $user->id))
|
|
|
519 |
);
|
|
|
520 |
}
|
|
|
521 |
}
|
|
|
522 |
|
|
|
523 |
if (has_capability('moodle/blog:create', $sitecontext)) {
|
|
|
524 |
// We can blog about this course.
|
|
|
525 |
$options['courseadd'] = array(
|
|
|
526 |
'string' => get_string('blogaboutthiscourse', 'blog'),
|
|
|
527 |
'link' => new moodle_url('/blog/edit.php', array('action' => 'add', 'courseid' => $course->id))
|
|
|
528 |
);
|
|
|
529 |
}
|
|
|
530 |
|
|
|
531 |
// Cache the options for this course.
|
|
|
532 |
$courseoptions[$key] = $options;
|
|
|
533 |
// Return the options.
|
|
|
534 |
return $options;
|
|
|
535 |
}
|
|
|
536 |
|
|
|
537 |
/**
|
|
|
538 |
* Get the blog options relating to the given module for the given user
|
|
|
539 |
*
|
|
|
540 |
* @staticvar array $moduleoptions Cache
|
|
|
541 |
* @param stdClass|cm_info $module The module to get options for
|
|
|
542 |
* @param stdClass $user The user to get options for null == currentuser
|
|
|
543 |
* @return array
|
|
|
544 |
*/
|
|
|
545 |
function blog_get_options_for_module($module, $user=null) {
|
|
|
546 |
global $CFG, $USER;
|
|
|
547 |
// Cache.
|
|
|
548 |
static $moduleoptions = array();
|
|
|
549 |
|
|
|
550 |
$options = array();
|
|
|
551 |
// User must be logged in, blogs must be enabled.
|
|
|
552 |
if (!blog_is_enabled_for_user()) {
|
|
|
553 |
return $options;
|
|
|
554 |
}
|
|
|
555 |
|
|
|
556 |
$sitecontext = context_system::instance();
|
|
|
557 |
|
|
|
558 |
// Generate the cache key.
|
|
|
559 |
$key = $module->id.':';
|
|
|
560 |
if (!empty($user)) {
|
|
|
561 |
$key .= $user->id;
|
|
|
562 |
} else {
|
|
|
563 |
$key .= $USER->id;
|
|
|
564 |
}
|
|
|
565 |
if (array_key_exists($key, $moduleoptions)) {
|
|
|
566 |
// Serve from the cache so we don't have to regenerate.
|
|
|
567 |
return $moduleoptions[$key];
|
|
|
568 |
}
|
|
|
569 |
|
|
|
570 |
if (has_capability('moodle/blog:view', $sitecontext)) {
|
|
|
571 |
// Save correct module name for later usage.
|
|
|
572 |
$modulename = get_string('modulename', $module->modname);
|
|
|
573 |
|
|
|
574 |
// We can view!
|
|
|
575 |
if ($CFG->bloglevel >= BLOG_SITE_LEVEL) {
|
|
|
576 |
// View all entries about this module.
|
|
|
577 |
$a = new stdClass;
|
|
|
578 |
$a->type = $modulename;
|
|
|
579 |
$options['moduleview'] = array(
|
|
|
580 |
'string' => get_string('viewallmodentries', 'blog', $a),
|
|
|
581 |
'link' => new moodle_url('/blog/index.php', array('modid' => $module->id))
|
|
|
582 |
);
|
|
|
583 |
}
|
|
|
584 |
// View MY entries about this module.
|
|
|
585 |
$options['moduleviewmine'] = array(
|
|
|
586 |
'string' => get_string('viewmyentriesaboutmodule', 'blog', $modulename),
|
|
|
587 |
'link' => new moodle_url('/blog/index.php', array('modid' => $module->id, 'userid' => $USER->id))
|
|
|
588 |
);
|
|
|
589 |
if (!empty($user) && ($CFG->bloglevel >= BLOG_SITE_LEVEL)) {
|
|
|
590 |
// View the given users entries about this module.
|
|
|
591 |
$a = new stdClass;
|
|
|
592 |
$a->mod = $modulename;
|
|
|
593 |
$a->user = fullname($user);
|
|
|
594 |
$options['moduleviewuser'] = array(
|
|
|
595 |
'string' => get_string('blogentriesbyuseraboutmodule', 'blog', $a),
|
|
|
596 |
'link' => new moodle_url('/blog/index.php', array('modid' => $module->id, 'userid' => $user->id))
|
|
|
597 |
);
|
|
|
598 |
}
|
|
|
599 |
}
|
|
|
600 |
|
|
|
601 |
if (has_capability('moodle/blog:create', $sitecontext)) {
|
|
|
602 |
// The user can blog about this module.
|
|
|
603 |
$options['moduleadd'] = array(
|
|
|
604 |
'string' => get_string('blogaboutthismodule', 'blog', $modulename),
|
|
|
605 |
'link' => new moodle_url('/blog/edit.php', array('action' => 'add', 'modid' => $module->id))
|
|
|
606 |
);
|
|
|
607 |
}
|
|
|
608 |
// Cache the options.
|
|
|
609 |
$moduleoptions[$key] = $options;
|
|
|
610 |
// Return the options.
|
|
|
611 |
return $options;
|
|
|
612 |
}
|
|
|
613 |
|
|
|
614 |
/**
|
|
|
615 |
* This function encapsulates all the logic behind the complex
|
|
|
616 |
* navigation, titles and headings of the blog listing page, depending
|
|
|
617 |
* on URL params. It looks at URL params and at the current context level.
|
|
|
618 |
* It builds and returns an array containing:
|
|
|
619 |
*
|
|
|
620 |
* 1. heading: The heading displayed above the blog entries
|
|
|
621 |
* 2. stradd: The text to be used as the "Add entry" link
|
|
|
622 |
* 3. strview: The text to be used as the "View entries" link
|
|
|
623 |
* 4. url: The moodle_url object used as the base for add and view links
|
|
|
624 |
* 5. filters: An array of parameters used to filter blog listings. Used by index.php and the Recent blogs block
|
|
|
625 |
*
|
|
|
626 |
* All other variables are set directly in $PAGE
|
|
|
627 |
*
|
|
|
628 |
* It uses the current URL to build these variables.
|
|
|
629 |
* A number of mutually exclusive use cases are used to structure this function.
|
|
|
630 |
*
|
|
|
631 |
* @param int $courseid course id the the blog is associated to (can be null).
|
|
|
632 |
* @param int $groupid group id to filter blogs I can see (can be null)
|
|
|
633 |
* @param int $userid blog author id (can be null)
|
|
|
634 |
* @param int $tagid tag id to filter (can be null)
|
|
|
635 |
* @param string $tag tag name to filter (can be null)
|
|
|
636 |
* @param int $modid module id the blog is associated to (can be null).
|
|
|
637 |
* @param int $entryid blog entry id to filter(can be null)
|
|
|
638 |
* @param string $search string to search (can be null)
|
|
|
639 |
* @return array
|
|
|
640 |
*/
|
|
|
641 |
function blog_get_headers($courseid=null, $groupid=null, $userid=null, $tagid=null, $tag=null, $modid=null, $entryid=null,
|
|
|
642 |
$search = null) {
|
|
|
643 |
global $CFG, $PAGE, $DB, $USER;
|
|
|
644 |
|
|
|
645 |
$id = optional_param('id', null, PARAM_INT);
|
|
|
646 |
$tag = optional_param('tag', $tag, PARAM_NOTAGS);
|
|
|
647 |
$tagid = optional_param('tagid', $tagid, PARAM_INT);
|
|
|
648 |
$userid = optional_param('userid', $userid, PARAM_INT);
|
|
|
649 |
$modid = optional_param('modid', $modid, PARAM_INT);
|
|
|
650 |
$entryid = optional_param('entryid', $entryid, PARAM_INT);
|
|
|
651 |
$groupid = optional_param('groupid', $groupid, PARAM_INT);
|
|
|
652 |
$courseid = optional_param('courseid', $courseid, PARAM_INT);
|
|
|
653 |
$search = optional_param('search', $search, PARAM_RAW);
|
|
|
654 |
$action = optional_param('action', null, PARAM_ALPHA);
|
|
|
655 |
$confirm = optional_param('confirm', false, PARAM_BOOL);
|
|
|
656 |
|
|
|
657 |
// Ignore userid when action == add.
|
|
|
658 |
if ($action == 'add' && $userid) {
|
|
|
659 |
unset($userid);
|
|
|
660 |
$PAGE->url->remove_params(array('userid'));
|
|
|
661 |
} else if ($action == 'add' && $entryid) {
|
|
|
662 |
unset($entryid);
|
|
|
663 |
$PAGE->url->remove_params(array('entryid'));
|
|
|
664 |
}
|
|
|
665 |
|
|
|
666 |
$headers = array('title' => '', 'heading' => '', 'cm' => null, 'filters' => array());
|
|
|
667 |
|
|
|
668 |
$blogurl = new moodle_url('/blog/index.php');
|
|
|
669 |
|
|
|
670 |
$headers['stradd'] = get_string('addnewentry', 'blog');
|
|
|
671 |
$headers['strview'] = null;
|
|
|
672 |
|
|
|
673 |
$site = $DB->get_record('course', array('id' => SITEID));
|
|
|
674 |
$sitecontext = context_system::instance();
|
|
|
675 |
// Common Lang strings.
|
|
|
676 |
$strparticipants = get_string("participants");
|
|
|
677 |
$strblogentries = get_string("blogentries", 'blog');
|
|
|
678 |
|
|
|
679 |
// Prepare record objects as needed.
|
|
|
680 |
if (!empty($courseid)) {
|
|
|
681 |
$headers['filters']['course'] = $courseid;
|
|
|
682 |
$course = $DB->get_record('course', array('id' => $courseid));
|
|
|
683 |
}
|
|
|
684 |
|
|
|
685 |
if (!empty($userid)) {
|
|
|
686 |
$headers['filters']['user'] = $userid;
|
|
|
687 |
$user = $DB->get_record('user', array('id' => $userid));
|
|
|
688 |
}
|
|
|
689 |
|
|
|
690 |
if (!empty($groupid)) { // The groupid always overrides courseid.
|
|
|
691 |
$headers['filters']['group'] = $groupid;
|
|
|
692 |
$group = $DB->get_record('groups', array('id' => $groupid));
|
|
|
693 |
$course = $DB->get_record('course', array('id' => $group->courseid));
|
|
|
694 |
}
|
|
|
695 |
|
|
|
696 |
$PAGE->set_pagelayout('standard');
|
|
|
697 |
|
|
|
698 |
// The modid always overrides courseid, so the $course object may be reset here.
|
|
|
699 |
if (!empty($modid) && $CFG->useblogassociations) {
|
|
|
700 |
|
|
|
701 |
$headers['filters']['module'] = $modid;
|
|
|
702 |
// A groupid param may conflict with this coursemod's courseid. Ignore groupid in that case.
|
|
|
703 |
$courseid = $DB->get_field('course_modules', 'course', array('id' => $modid));
|
|
|
704 |
$course = $DB->get_record('course', array('id' => $courseid));
|
|
|
705 |
$cm = $DB->get_record('course_modules', array('id' => $modid));
|
|
|
706 |
$cm->modname = $DB->get_field('modules', 'name', array('id' => $cm->module));
|
|
|
707 |
$cm->name = $DB->get_field($cm->modname, 'name', array('id' => $cm->instance));
|
|
|
708 |
$a = new stdClass();
|
|
|
709 |
$a->type = get_string('modulename', $cm->modname);
|
|
|
710 |
$PAGE->set_cm($cm, $course);
|
|
|
711 |
$headers['stradd'] = get_string('blogaboutthis', 'blog', $a);
|
|
|
712 |
$headers['strview'] = get_string('viewallmodentries', 'blog', $a);
|
|
|
713 |
}
|
|
|
714 |
|
|
|
715 |
// Case 1: No entry, mod, course or user params: all site entries to be shown (filtered by search and tag/tagid)
|
|
|
716 |
// Note: if action is set to 'add' or 'edit', we do this at the end.
|
|
|
717 |
if (empty($entryid) && empty($modid) && empty($courseid) && empty($userid) && !in_array($action, array('edit', 'add'))) {
|
|
|
718 |
$PAGE->navbar->add($strblogentries, $blogurl);
|
|
|
719 |
$strsiteblog = get_string('siteblogheading', 'blog');
|
|
|
720 |
$PAGE->set_title($strsiteblog);
|
|
|
721 |
$PAGE->set_heading($site->fullname);
|
|
|
722 |
$headers['heading'] = $strsiteblog;
|
|
|
723 |
}
|
|
|
724 |
|
|
|
725 |
// Case 2: only entryid is requested, ignore all other filters. courseid is used to give more contextual information.
|
|
|
726 |
if (!empty($entryid)) {
|
|
|
727 |
$headers['filters']['entry'] = $entryid;
|
|
|
728 |
$sql = 'SELECT u.* FROM {user} u, {post} p WHERE p.id = ? AND p.userid = u.id';
|
|
|
729 |
$user = $DB->get_record_sql($sql, array($entryid));
|
|
|
730 |
$entry = $DB->get_record('post', array('id' => $entryid));
|
|
|
731 |
|
|
|
732 |
$blogurl->param('userid', $user->id);
|
|
|
733 |
|
|
|
734 |
if (!empty($course)) {
|
|
|
735 |
$mycourseid = $course->id;
|
|
|
736 |
$blogurl->param('courseid', $mycourseid);
|
|
|
737 |
} else {
|
|
|
738 |
$mycourseid = $site->id;
|
|
|
739 |
}
|
|
|
740 |
$shortname = format_string($site->shortname, true, array('context' => context_course::instance(SITEID)));
|
|
|
741 |
|
|
|
742 |
$PAGE->navbar->add($strblogentries, $blogurl);
|
|
|
743 |
|
|
|
744 |
$blogurl->remove_params('userid');
|
|
|
745 |
$PAGE->navbar->add($entry->subject, $blogurl);
|
|
|
746 |
$blogentryby = get_string('blogentrybyuser', 'blog', fullname($user));
|
|
|
747 |
$PAGE->set_title($entry->subject . moodle_page::TITLE_SEPARATOR . $blogentryby);
|
|
|
748 |
$PAGE->set_heading("$shortname: " . fullname($user) . ": $entry->subject");
|
|
|
749 |
$headers['heading'] = $blogentryby;
|
|
|
750 |
|
|
|
751 |
// We ignore tag and search params.
|
|
|
752 |
if (empty($action) || !$CFG->useblogassociations) {
|
|
|
753 |
$headers['url'] = $blogurl;
|
|
|
754 |
return $headers;
|
|
|
755 |
}
|
|
|
756 |
}
|
|
|
757 |
|
|
|
758 |
if (!empty($userid) && empty($entryid) && ((empty($courseid) && empty($modid)) || !$CFG->useblogassociations)) {
|
|
|
759 |
// Case 3: A user's blog entries.
|
|
|
760 |
|
|
|
761 |
$shortname = format_string($site->shortname, true, array('context' => context_course::instance(SITEID)));
|
|
|
762 |
$blogurl->param('userid', $userid);
|
|
|
763 |
$PAGE->set_title(fullname($user) . ": " . get_string('blog', 'blog'));
|
|
|
764 |
$PAGE->set_heading("$shortname: " . fullname($user) . ": " . get_string('blog', 'blog'));
|
|
|
765 |
$headers['heading'] = get_string('userblog', 'blog', fullname($user));
|
|
|
766 |
$headers['strview'] = get_string('viewuserentries', 'blog', fullname($user));
|
|
|
767 |
|
|
|
768 |
} else if (!$CFG->useblogassociations && empty($userid) && !in_array($action, array('edit', 'add'))) {
|
|
|
769 |
// Case 4: No blog associations, no userid.
|
|
|
770 |
|
|
|
771 |
$strsiteblog = get_string('siteblogheading', 'blog');
|
|
|
772 |
$PAGE->set_title($strsiteblog);
|
|
|
773 |
$PAGE->set_heading($site->fullname);
|
|
|
774 |
$headers['heading'] = $strsiteblog;
|
|
|
775 |
} else if (!empty($userid) && !empty($modid) && empty($entryid)) {
|
|
|
776 |
// Case 5: Blog entries associated with an activity by a specific user (courseid ignored).
|
|
|
777 |
|
|
|
778 |
$shortname = format_string($site->shortname, true, array('context' => context_course::instance(SITEID)));
|
|
|
779 |
$blogurl->param('userid', $userid);
|
|
|
780 |
$blogurl->param('modid', $modid);
|
|
|
781 |
|
|
|
782 |
// Course module navigation is handled by build_navigation as the second param.
|
|
|
783 |
$headers['cm'] = $cm;
|
|
|
784 |
$PAGE->navbar->add(fullname($user), "$CFG->wwwroot/user/view.php?id=$user->id");
|
|
|
785 |
$PAGE->navbar->add($strblogentries, $blogurl);
|
|
|
786 |
|
|
|
787 |
$PAGE->set_title(fullname($user) . ': ' . get_string('blogentries', 'blog') . moodle_page::TITLE_SEPARATOR . $cm->name);
|
|
|
788 |
$PAGE->set_heading("$shortname: $cm->name: " . fullname($user) . ': ' . get_string('blogentries', 'blog'));
|
|
|
789 |
|
|
|
790 |
$a = new stdClass();
|
|
|
791 |
$a->user = fullname($user);
|
|
|
792 |
$a->mod = $cm->name;
|
|
|
793 |
$a->type = get_string('modulename', $cm->modname);
|
|
|
794 |
$headers['heading'] = get_string('blogentriesbyuseraboutmodule', 'blog', $a);
|
|
|
795 |
$headers['stradd'] = get_string('blogaboutthis', 'blog', $a);
|
|
|
796 |
$headers['strview'] = get_string('viewallmodentries', 'blog', $a);
|
|
|
797 |
} else if (!empty($userid) && !empty($courseid) && empty($modid) && empty($entryid)) {
|
|
|
798 |
// Case 6: Blog entries associated with a course by a specific user.
|
|
|
799 |
|
|
|
800 |
$blogurl->param('userid', $userid);
|
|
|
801 |
$blogurl->param('courseid', $courseid);
|
|
|
802 |
|
|
|
803 |
$PAGE->set_title($course->fullname);
|
|
|
804 |
$PAGE->set_heading($course->fullname);
|
|
|
805 |
|
|
|
806 |
$a = new stdClass();
|
|
|
807 |
$a->user = fullname($user);
|
|
|
808 |
$a->course = format_string($course->fullname, true, array('context' => context_course::instance($course->id)));
|
|
|
809 |
$a->type = get_string('course');
|
|
|
810 |
$headers['heading'] = get_string('blogentriesbyuseraboutcourse', 'blog', $a);
|
|
|
811 |
$headers['stradd'] = get_string('blogaboutthis', 'blog', $a);
|
|
|
812 |
$headers['strview'] = get_string('viewblogentries', 'blog', $a);
|
|
|
813 |
|
|
|
814 |
// Remove the userid from the URL to inform the blog_menu block correctly.
|
|
|
815 |
$blogurl->remove_params(array('userid'));
|
|
|
816 |
} else if (!empty($groupid) && empty($modid) && empty($entryid)) {
|
|
|
817 |
// Case 7: Blog entries by members of a group, associated with that group's course.
|
|
|
818 |
|
|
|
819 |
$blogurl->param('courseid', $course->id);
|
|
|
820 |
|
|
|
821 |
$PAGE->navbar->add($strblogentries, $blogurl);
|
|
|
822 |
$blogurl->remove_params(array('courseid'));
|
|
|
823 |
$blogurl->param('groupid', $groupid);
|
|
|
824 |
$PAGE->navbar->add($group->name, $blogurl);
|
|
|
825 |
|
|
|
826 |
$PAGE->set_title($course->fullname);
|
|
|
827 |
$PAGE->set_heading($course->fullname);
|
|
|
828 |
|
|
|
829 |
$a = new stdClass();
|
|
|
830 |
$a->group = $group->name;
|
|
|
831 |
$a->course = format_string($course->fullname, true, array('context' => context_course::instance($course->id)));
|
|
|
832 |
$a->type = get_string('course');
|
|
|
833 |
$headers['heading'] = get_string('blogentriesbygroupaboutcourse', 'blog', $a);
|
|
|
834 |
$headers['stradd'] = get_string('blogaboutthis', 'blog', $a);
|
|
|
835 |
$headers['strview'] = get_string('viewblogentries', 'blog', $a);
|
|
|
836 |
} else if (!empty($groupid) && !empty($modid) && empty($entryid)) {
|
|
|
837 |
// Case 8: Blog entries by members of a group, associated with an activity in that course.
|
|
|
838 |
|
|
|
839 |
$headers['cm'] = $cm;
|
|
|
840 |
$blogurl->param('modid', $modid);
|
|
|
841 |
$PAGE->navbar->add($strblogentries, $blogurl);
|
|
|
842 |
|
|
|
843 |
$blogurl->param('groupid', $groupid);
|
|
|
844 |
$PAGE->navbar->add($group->name, $blogurl);
|
|
|
845 |
|
|
|
846 |
$PAGE->set_title($course->fullname);
|
|
|
847 |
$PAGE->set_heading($course->fullname);
|
|
|
848 |
|
|
|
849 |
$a = new stdClass();
|
|
|
850 |
$a->group = $group->name;
|
|
|
851 |
$a->mod = $cm->name;
|
|
|
852 |
$a->type = get_string('modulename', $cm->modname);
|
|
|
853 |
$headers['heading'] = get_string('blogentriesbygroupaboutmodule', 'blog', $a);
|
|
|
854 |
$headers['stradd'] = get_string('blogaboutthis', 'blog', $a);
|
|
|
855 |
$headers['strview'] = get_string('viewallmodentries', 'blog', $a);
|
|
|
856 |
|
|
|
857 |
} else if (!empty($modid) && empty($userid) && empty($groupid) && empty($entryid)) {
|
|
|
858 |
// Case 9: All blog entries associated with an activity.
|
|
|
859 |
|
|
|
860 |
$PAGE->set_cm($cm, $course);
|
|
|
861 |
$blogurl->param('modid', $modid);
|
|
|
862 |
$PAGE->navbar->add($strblogentries, $blogurl);
|
|
|
863 |
$PAGE->set_title($course->fullname);
|
|
|
864 |
$PAGE->set_heading($course->fullname);
|
|
|
865 |
$headers['heading'] = get_string('blogentriesabout', 'blog', $cm->name);
|
|
|
866 |
$a = new stdClass();
|
|
|
867 |
$a->type = get_string('modulename', $cm->modname);
|
|
|
868 |
$headers['stradd'] = get_string('blogaboutthis', 'blog', $a);
|
|
|
869 |
$headers['strview'] = get_string('viewallmodentries', 'blog', $a);
|
|
|
870 |
} else if (!empty($courseid) && empty($userid) && empty($groupid) && empty($modid) && empty($entryid)) {
|
|
|
871 |
// Case 10: All blog entries associated with a course.
|
|
|
872 |
|
|
|
873 |
$blogurl->param('courseid', $courseid);
|
|
|
874 |
$PAGE->navbar->add($strblogentries, $blogurl);
|
|
|
875 |
$PAGE->set_title($course->fullname);
|
|
|
876 |
$PAGE->set_heading($course->fullname);
|
|
|
877 |
$a = new stdClass();
|
|
|
878 |
$a->type = get_string('course');
|
|
|
879 |
$headers['heading'] = get_string('blogentriesabout',
|
|
|
880 |
'blog',
|
|
|
881 |
format_string($course->fullname,
|
|
|
882 |
true,
|
|
|
883 |
array('context' => context_course::instance($course->id))));
|
|
|
884 |
$headers['stradd'] = get_string('blogaboutthis', 'blog', $a);
|
|
|
885 |
$headers['strview'] = get_string('viewblogentries', 'blog', $a);
|
|
|
886 |
$blogurl->remove_params(array('userid'));
|
|
|
887 |
}
|
|
|
888 |
|
|
|
889 |
if (!in_array($action, array('edit', 'add'))) {
|
|
|
890 |
// Append Tag info.
|
|
|
891 |
if (!empty($tagid)) {
|
|
|
892 |
$headers['filters']['tag'] = $tagid;
|
|
|
893 |
$blogurl->param('tagid', $tagid);
|
|
|
894 |
$tagrec = $DB->get_record('tag', array('id' => $tagid));
|
|
|
895 |
$PAGE->navbar->add($tagrec->name, $blogurl);
|
|
|
896 |
} else if (!empty($tag)) {
|
|
|
897 |
if ($tagrec = $DB->get_record('tag', array('name' => $tag))) {
|
|
|
898 |
$tagid = $tagrec->id;
|
|
|
899 |
$headers['filters']['tag'] = $tagid;
|
|
|
900 |
$blogurl->param('tag', $tag);
|
|
|
901 |
$PAGE->navbar->add(get_string('tagparam', 'blog', $tag), $blogurl);
|
|
|
902 |
}
|
|
|
903 |
}
|
|
|
904 |
|
|
|
905 |
// Append Search info.
|
|
|
906 |
if (!empty($search) && has_capability('moodle/blog:search', $sitecontext)) {
|
|
|
907 |
$headers['filters']['search'] = $search;
|
|
|
908 |
$blogurl->param('search', $search);
|
|
|
909 |
$PAGE->navbar->add(get_string('searchterm', 'blog', s($search)), $blogurl->out());
|
|
|
910 |
}
|
|
|
911 |
}
|
|
|
912 |
|
|
|
913 |
// Append edit mode info.
|
|
|
914 |
if (!empty($action) && $action == 'add') {
|
|
|
915 |
|
|
|
916 |
} else if (!empty($action) && $action == 'edit') {
|
|
|
917 |
$PAGE->navbar->add(get_string('editentry', 'blog'));
|
|
|
918 |
}
|
|
|
919 |
|
|
|
920 |
if (empty($headers['url'])) {
|
|
|
921 |
$headers['url'] = $blogurl;
|
|
|
922 |
}
|
|
|
923 |
return $headers;
|
|
|
924 |
}
|
|
|
925 |
|
|
|
926 |
/**
|
|
|
927 |
* Shortcut function for getting a count of blog entries associated with a course or a module
|
|
|
928 |
* @param int $courseid The ID of the course
|
|
|
929 |
* @param int $cmid The ID of the course_modules
|
|
|
930 |
* @return string The number of associated entries
|
|
|
931 |
*/
|
|
|
932 |
function blog_get_associated_count($courseid, $cmid=null) {
|
|
|
933 |
global $DB;
|
|
|
934 |
$context = context_course::instance($courseid);
|
|
|
935 |
if ($cmid) {
|
|
|
936 |
$context = context_module::instance($cmid);
|
|
|
937 |
}
|
|
|
938 |
return $DB->count_records('blog_association', array('contextid' => $context->id));
|
|
|
939 |
}
|
|
|
940 |
|
|
|
941 |
/**
|
|
|
942 |
* Running addtional permission check on plugin, for example, plugins
|
|
|
943 |
* may have switch to turn on/off comments option, this callback will
|
|
|
944 |
* affect UI display, not like pluginname_comment_validate only throw
|
|
|
945 |
* exceptions.
|
|
|
946 |
* blog_comment_validate will be called before viewing/adding/deleting
|
|
|
947 |
* comment, so don't repeat checks.
|
|
|
948 |
* Capability check has been done in comment->check_permissions(), we
|
|
|
949 |
* don't need to do it again here.
|
|
|
950 |
*
|
|
|
951 |
* @package core_blog
|
|
|
952 |
* @category comment
|
|
|
953 |
*
|
|
|
954 |
* @param stdClass $commentparam {
|
|
|
955 |
* context => context the context object
|
|
|
956 |
* courseid => int course id
|
|
|
957 |
* cm => stdClass course module object
|
|
|
958 |
* commentarea => string comment area
|
|
|
959 |
* itemid => int itemid
|
|
|
960 |
* }
|
|
|
961 |
* @return array
|
|
|
962 |
*/
|
|
|
963 |
function blog_comment_permissions($commentparam) {
|
|
|
964 |
global $DB;
|
|
|
965 |
|
|
|
966 |
// If blog is public and current user is guest, then don't let him post comments.
|
|
|
967 |
$blogentry = $DB->get_record('post', array('id' => $commentparam->itemid), 'publishstate', MUST_EXIST);
|
|
|
968 |
|
|
|
969 |
if ($blogentry->publishstate != 'public') {
|
|
|
970 |
if (!isloggedin() || isguestuser()) {
|
|
|
971 |
return array('post' => false, 'view' => true);
|
|
|
972 |
}
|
|
|
973 |
}
|
|
|
974 |
return array('post' => true, 'view' => true);
|
|
|
975 |
}
|
|
|
976 |
|
|
|
977 |
/**
|
|
|
978 |
* Validate comment parameter before perform other comments actions
|
|
|
979 |
*
|
|
|
980 |
* @package core_blog
|
|
|
981 |
* @category comment
|
|
|
982 |
*
|
|
|
983 |
* @param stdClass $comment {
|
|
|
984 |
* context => context the context object
|
|
|
985 |
* courseid => int course id
|
|
|
986 |
* cm => stdClass course module object
|
|
|
987 |
* commentarea => string comment area
|
|
|
988 |
* itemid => int itemid
|
|
|
989 |
* }
|
|
|
990 |
* @return boolean
|
|
|
991 |
*/
|
|
|
992 |
function blog_comment_validate($commentparam) {
|
|
|
993 |
global $CFG, $DB, $USER;
|
|
|
994 |
|
|
|
995 |
// Check if blogs are enabled user can comment.
|
|
|
996 |
if (empty($CFG->enableblogs) || empty($CFG->blogusecomments)) {
|
|
|
997 |
throw new comment_exception('nopermissiontocomment');
|
|
|
998 |
}
|
|
|
999 |
|
|
|
1000 |
// Validate comment area.
|
|
|
1001 |
if ($commentparam->commentarea != 'format_blog') {
|
|
|
1002 |
throw new comment_exception('invalidcommentarea');
|
|
|
1003 |
}
|
|
|
1004 |
|
|
|
1005 |
$blogentry = $DB->get_record('post', array('id' => $commentparam->itemid), '*', MUST_EXIST);
|
|
|
1006 |
|
|
|
1007 |
// Validation for comment deletion.
|
|
|
1008 |
if (!empty($commentparam->commentid)) {
|
|
|
1009 |
if ($record = $DB->get_record('comments', array('id' => $commentparam->commentid))) {
|
|
|
1010 |
if ($record->commentarea != 'format_blog') {
|
|
|
1011 |
throw new comment_exception('invalidcommentarea');
|
|
|
1012 |
}
|
|
|
1013 |
if ($record->contextid != $commentparam->context->id) {
|
|
|
1014 |
throw new comment_exception('invalidcontext');
|
|
|
1015 |
}
|
|
|
1016 |
if ($record->itemid != $commentparam->itemid) {
|
|
|
1017 |
throw new comment_exception('invalidcommentitemid');
|
|
|
1018 |
}
|
|
|
1019 |
} else {
|
|
|
1020 |
throw new comment_exception('invalidcommentid');
|
|
|
1021 |
}
|
|
|
1022 |
}
|
|
|
1023 |
|
|
|
1024 |
// Validate if user has blog view permission.
|
|
|
1025 |
$sitecontext = context_system::instance();
|
|
|
1026 |
return has_capability('moodle/blog:view', $sitecontext) &&
|
|
|
1027 |
blog_user_can_view_user_entry($blogentry->userid, $blogentry);
|
|
|
1028 |
}
|
|
|
1029 |
|
|
|
1030 |
/**
|
|
|
1031 |
* Return a list of page types
|
|
|
1032 |
* @param string $pagetype current page type
|
|
|
1033 |
* @param stdClass $parentcontext Block's parent context
|
|
|
1034 |
* @param stdClass $currentcontext Current context of block
|
|
|
1035 |
*/
|
|
|
1036 |
function blog_page_type_list($pagetype, $parentcontext, $currentcontext) {
|
|
|
1037 |
return array(
|
|
|
1038 |
'*' => get_string('page-x', 'pagetype'),
|
|
|
1039 |
'blog-*' => get_string('page-blog-x', 'blog'),
|
|
|
1040 |
'blog-index' => get_string('page-blog-index', 'blog'),
|
|
|
1041 |
'blog-edit' => get_string('page-blog-edit', 'blog')
|
|
|
1042 |
);
|
|
|
1043 |
}
|
|
|
1044 |
|
|
|
1045 |
/**
|
|
|
1046 |
* Add nodes to myprofile page.
|
|
|
1047 |
*
|
|
|
1048 |
* @param \core_user\output\myprofile\tree $tree Tree object
|
|
|
1049 |
* @param stdClass $user user object
|
|
|
1050 |
* @param bool $iscurrentuser
|
|
|
1051 |
* @param stdClass $course Course object
|
|
|
1052 |
*
|
|
|
1053 |
* @return bool
|
|
|
1054 |
*/
|
|
|
1055 |
function core_blog_myprofile_navigation(core_user\output\myprofile\tree $tree, $user, $iscurrentuser, $course) {
|
|
|
1056 |
global $CFG;
|
|
|
1057 |
if (!blog_is_enabled_for_user() || isguestuser($user)) {
|
|
|
1058 |
// The guest user cannot post, so it is not possible to view any posts.
|
|
|
1059 |
// Also blogs might be disabled.
|
|
|
1060 |
// May as well just bail aggressively here.
|
|
|
1061 |
return true;
|
|
|
1062 |
}
|
|
|
1063 |
if (!blog_user_can_view_user_entry($user->id)) {
|
|
|
1064 |
return true;
|
|
|
1065 |
}
|
|
|
1066 |
$url = new moodle_url("/blog/index.php", array('userid' => $user->id));
|
|
|
1067 |
if (!empty($course)) {
|
|
|
1068 |
$url->param('courseid', $course->id);
|
|
|
1069 |
}
|
|
|
1070 |
if ($iscurrentuser) {
|
|
|
1071 |
$title = get_string('blogentries', 'core_blog');
|
|
|
1072 |
} else {
|
|
|
1073 |
$title = get_string('myprofileuserblogs', 'core_blog');
|
|
|
1074 |
}
|
|
|
1075 |
$blognode = new core_user\output\myprofile\node('miscellaneous', 'blogs', $title, null, $url);
|
|
|
1076 |
$tree->add_node($blognode);
|
|
|
1077 |
return true;
|
|
|
1078 |
}
|
|
|
1079 |
|
|
|
1080 |
/**
|
|
|
1081 |
* Returns posts tagged with a specified tag.
|
|
|
1082 |
*
|
|
|
1083 |
* @param core_tag_tag $tag
|
|
|
1084 |
* @param bool $exclusivemode if set to true it means that no other entities tagged with this tag
|
|
|
1085 |
* are displayed on the page and the per-page limit may be bigger
|
|
|
1086 |
* @param int $fromctx context id where the link was displayed, may be used by callbacks
|
|
|
1087 |
* to display items in the same context first
|
|
|
1088 |
* @param int $ctx context id where to search for records
|
|
|
1089 |
* @param bool $rec search in subcontexts as well
|
|
|
1090 |
* @param int $page 0-based number of page being displayed
|
|
|
1091 |
* @return \core_tag\output\tagindex
|
|
|
1092 |
*/
|
|
|
1093 |
function blog_get_tagged_posts($tag, $exclusivemode = false, $fromctx = 0, $ctx = 0, $rec = true, $page = 0) {
|
|
|
1094 |
global $CFG, $OUTPUT;
|
|
|
1095 |
require_once($CFG->dirroot.'/user/lib.php');
|
|
|
1096 |
|
|
|
1097 |
$systemcontext = context_system::instance();
|
|
|
1098 |
$perpage = $exclusivemode ? 20 : 5;
|
|
|
1099 |
$context = $ctx ? context::instance_by_id($ctx) : context_system::instance();
|
|
|
1100 |
|
|
|
1101 |
$content = '';
|
|
|
1102 |
if (empty($CFG->enableblogs) || !has_capability('moodle/blog:view', $systemcontext)) {
|
|
|
1103 |
// Blogs are not enabled or are not visible to the current user.
|
|
|
1104 |
$totalpages = 0;
|
|
|
1105 |
} else if ($context->contextlevel != CONTEXT_SYSTEM && empty($CFG->useblogassociations)) {
|
|
|
1106 |
// No blog entries can be associated to the non-system context.
|
|
|
1107 |
$totalpages = 0;
|
|
|
1108 |
} else if (!$rec && $context->contextlevel != CONTEXT_COURSE && $context->contextlevel != CONTEXT_MODULE) {
|
|
|
1109 |
// No blog entries can be associated with category or block context.
|
|
|
1110 |
$totalpages = 0;
|
|
|
1111 |
} else {
|
|
|
1112 |
require_once($CFG->dirroot.'/blog/locallib.php');
|
|
|
1113 |
|
|
|
1114 |
$filters = array('tag' => $tag->id);
|
|
|
1115 |
if ($rec) {
|
|
|
1116 |
if ($context->contextlevel != CONTEXT_SYSTEM) {
|
|
|
1117 |
$filters['context'] = $context->id;
|
|
|
1118 |
}
|
|
|
1119 |
} else if ($context->contextlevel == CONTEXT_COURSE) {
|
|
|
1120 |
$filters['course'] = $context->instanceid;
|
|
|
1121 |
} else if ($context->contextlevel == CONTEXT_MODULE) {
|
|
|
1122 |
$filters['module'] = $context->instanceid;
|
|
|
1123 |
}
|
|
|
1124 |
$bloglisting = new blog_listing($filters);
|
|
|
1125 |
$blogs = $bloglisting->get_entries($page * $perpage, $perpage);
|
|
|
1126 |
$totalcount = $bloglisting->count_entries();
|
|
|
1127 |
$totalpages = ceil($totalcount / $perpage);
|
|
|
1128 |
if (!empty($blogs)) {
|
|
|
1129 |
$tagfeed = new core_tag\output\tagfeed();
|
|
|
1130 |
foreach ($blogs as $blog) {
|
|
|
1131 |
$user = fullclone($blog);
|
|
|
1132 |
$user->id = $blog->userid;
|
|
|
1133 |
$user->deleted = 0;
|
|
|
1134 |
$img = $OUTPUT->user_picture($user, array('size' => 35));
|
|
|
1135 |
$subject = format_string($blog->subject);
|
|
|
1136 |
|
|
|
1137 |
if ($blog->publishstate == 'draft') {
|
|
|
1138 |
$class = 'dimmed';
|
|
|
1139 |
} else {
|
|
|
1140 |
$class = '';
|
|
|
1141 |
}
|
|
|
1142 |
|
|
|
1143 |
$url = new moodle_url('/blog/index.php', array('entryid' => $blog->id));
|
|
|
1144 |
$subject = html_writer::link($url, $subject, array('class' => $class));
|
|
|
1145 |
|
|
|
1146 |
$fullname = fullname($user);
|
|
|
1147 |
if (user_can_view_profile($user)) {
|
|
|
1148 |
$profilelink = new moodle_url('/user/view.php', array('id' => $blog->userid));
|
|
|
1149 |
$fullname = html_writer::link($profilelink, $fullname);
|
|
|
1150 |
}
|
|
|
1151 |
$details = $fullname . ', ' . userdate($blog->created);
|
|
|
1152 |
|
|
|
1153 |
$tagfeed->add($img, $subject, $details);
|
|
|
1154 |
}
|
|
|
1155 |
|
|
|
1156 |
$items = $tagfeed->export_for_template($OUTPUT);
|
|
|
1157 |
$content = $OUTPUT->render_from_template('core_tag/tagfeed', $items);
|
|
|
1158 |
|
|
|
1159 |
$urlparams = array('tagid' => $tag->id);
|
|
|
1160 |
if ($context->contextlevel == CONTEXT_COURSE) {
|
|
|
1161 |
$urlparams['courseid'] = $context->instanceid;
|
|
|
1162 |
} else if ($context->contextlevel == CONTEXT_MODULE) {
|
|
|
1163 |
$urlparams['modid'] = $context->instanceid;
|
|
|
1164 |
}
|
|
|
1165 |
$allblogsurl = new moodle_url('/blog/index.php', $urlparams);
|
|
|
1166 |
|
|
|
1167 |
$rv = new core_tag\output\tagindex($tag, 'core', 'post',
|
|
|
1168 |
$content,
|
|
|
1169 |
$exclusivemode, $fromctx, $ctx, $rec, $page, $totalpages);
|
|
|
1170 |
$rv->exclusiveurl = $allblogsurl;
|
|
|
1171 |
return $rv;
|
|
|
1172 |
}
|
|
|
1173 |
}
|
|
|
1174 |
|
|
|
1175 |
$rv = new core_tag\output\tagindex($tag, 'core', 'post',
|
|
|
1176 |
$content,
|
|
|
1177 |
$exclusivemode, $fromctx, $ctx, $rec, $page, $totalpages);
|
|
|
1178 |
$rv->exclusiveurl = null;
|
|
|
1179 |
return $rv;
|
|
|
1180 |
}
|
|
|
1181 |
|
|
|
1182 |
/**
|
|
|
1183 |
* Validate the access to a blog.
|
|
|
1184 |
*
|
|
|
1185 |
* @param int $courseid course id the the blog is associated to (can be null).
|
|
|
1186 |
* @param int $modid module id the blog is associated to (can be null).
|
|
|
1187 |
* @param int $groupid group id to filter blogs I can see (can be null)
|
|
|
1188 |
* @param int $entryid blog entry id (can be null)
|
|
|
1189 |
* @param int $userid blog author id (can be null)
|
|
|
1190 |
* @return array with the calculated course and id
|
|
|
1191 |
* @since Moodle 3.6
|
|
|
1192 |
*/
|
|
|
1193 |
function blog_validate_access($courseid, $modid, $groupid, $entryid, $userid) {
|
|
|
1194 |
global $CFG, $DB, $USER, $COURSE;
|
|
|
1195 |
|
|
|
1196 |
$sitecontext = context_system::instance();
|
|
|
1197 |
|
|
|
1198 |
// Add courseid if modid or groupid is specified: This is used for navigation and title.
|
|
|
1199 |
if (!empty($modid) && empty($courseid)) {
|
|
|
1200 |
$courseid = $DB->get_field('course_modules', 'course', array('id' => $modid));
|
|
|
1201 |
}
|
|
|
1202 |
|
|
|
1203 |
if (!empty($groupid) && empty($courseid)) {
|
|
|
1204 |
$courseid = $DB->get_field('groups', 'courseid', array('id' => $groupid));
|
|
|
1205 |
}
|
|
|
1206 |
|
|
|
1207 |
if (!$userid && has_capability('moodle/blog:view', $sitecontext) && $CFG->bloglevel > BLOG_USER_LEVEL) {
|
|
|
1208 |
if ($entryid) {
|
|
|
1209 |
if (!$entryobject = $DB->get_record('post', array('id' => $entryid))) {
|
|
|
1210 |
throw new \moodle_exception('nosuchentry', 'blog');
|
|
|
1211 |
}
|
|
|
1212 |
$userid = $entryobject->userid;
|
|
|
1213 |
}
|
|
|
1214 |
} else if (!$userid) {
|
|
|
1215 |
$userid = $USER->id;
|
|
|
1216 |
}
|
|
|
1217 |
|
|
|
1218 |
if (!empty($modid)) {
|
|
|
1219 |
if ($CFG->bloglevel < BLOG_SITE_LEVEL) {
|
|
|
1220 |
throw new \moodle_exception('courseblogdisable', 'blog');
|
|
|
1221 |
}
|
|
|
1222 |
if (!$mod = $DB->get_record('course_modules', array('id' => $modid))) {
|
|
|
1223 |
throw new \moodle_exception('invalidmoduleid', 'error', '', $modid);
|
|
|
1224 |
}
|
|
|
1225 |
$courseid = $mod->course;
|
|
|
1226 |
}
|
|
|
1227 |
|
|
|
1228 |
if ((empty($courseid) ? true : $courseid == SITEID) && empty($userid)) {
|
|
|
1229 |
if ($CFG->bloglevel < BLOG_SITE_LEVEL) {
|
|
|
1230 |
throw new \moodle_exception('siteblogdisable', 'blog');
|
|
|
1231 |
}
|
|
|
1232 |
if (!has_capability('moodle/blog:view', $sitecontext)) {
|
|
|
1233 |
throw new \moodle_exception('cannotviewsiteblog', 'blog');
|
|
|
1234 |
}
|
|
|
1235 |
|
|
|
1236 |
$COURSE = $DB->get_record('course', array('format' => 'site'));
|
|
|
1237 |
$courseid = $COURSE->id;
|
|
|
1238 |
}
|
|
|
1239 |
|
|
|
1240 |
if (!empty($courseid)) {
|
|
|
1241 |
if (!$course = $DB->get_record('course', array('id' => $courseid))) {
|
|
|
1242 |
throw new \moodle_exception('invalidcourseid');
|
|
|
1243 |
}
|
|
|
1244 |
|
|
|
1245 |
$courseid = $course->id;
|
|
|
1246 |
|
|
|
1247 |
if (!has_capability('moodle/blog:view', $sitecontext)) {
|
|
|
1248 |
throw new \moodle_exception('cannotviewcourseblog', 'blog');
|
|
|
1249 |
}
|
|
|
1250 |
} else {
|
|
|
1251 |
$coursecontext = context_course::instance(SITEID);
|
|
|
1252 |
}
|
|
|
1253 |
|
|
|
1254 |
if (!empty($groupid)) {
|
|
|
1255 |
if ($CFG->bloglevel < BLOG_SITE_LEVEL) {
|
|
|
1256 |
throw new \moodle_exception('groupblogdisable', 'blog');
|
|
|
1257 |
}
|
|
|
1258 |
|
|
|
1259 |
if (! $group = groups_get_group($groupid)) {
|
|
|
1260 |
throw new \moodle_exception('invalidgroupid', 'blog');
|
|
|
1261 |
}
|
|
|
1262 |
|
|
|
1263 |
if (!$course = $DB->get_record('course', array('id' => $group->courseid))) {
|
|
|
1264 |
throw new \moodle_exception('invalidcourseid');
|
|
|
1265 |
}
|
|
|
1266 |
|
|
|
1267 |
$coursecontext = context_course::instance($course->id);
|
|
|
1268 |
$courseid = $course->id;
|
|
|
1269 |
|
|
|
1270 |
if (!has_capability('moodle/blog:view', $sitecontext)) {
|
|
|
1271 |
throw new \moodle_exception('cannotviewcourseorgroupblog', 'blog');
|
|
|
1272 |
}
|
|
|
1273 |
|
|
|
1274 |
if (groups_get_course_groupmode($course) == SEPARATEGROUPS &&
|
|
|
1275 |
!has_capability('moodle/site:accessallgroups', $coursecontext)) {
|
|
|
1276 |
|
|
|
1277 |
if (!groups_is_member($groupid)) {
|
|
|
1278 |
throw new \moodle_exception('notmemberofgroup');
|
|
|
1279 |
}
|
|
|
1280 |
}
|
|
|
1281 |
}
|
|
|
1282 |
|
|
|
1283 |
if (!empty($userid)) {
|
|
|
1284 |
if ($CFG->bloglevel < BLOG_USER_LEVEL) {
|
|
|
1285 |
throw new \moodle_exception('blogdisable', 'blog');
|
|
|
1286 |
}
|
|
|
1287 |
|
|
|
1288 |
if (!$user = $DB->get_record('user', array('id' => $userid))) {
|
|
|
1289 |
throw new \moodle_exception('invaliduserid');
|
|
|
1290 |
}
|
|
|
1291 |
|
|
|
1292 |
if ($user->deleted) {
|
|
|
1293 |
throw new \moodle_exception('userdeleted');
|
|
|
1294 |
}
|
|
|
1295 |
|
|
|
1296 |
if ($USER->id == $userid) {
|
|
|
1297 |
if (!has_capability('moodle/blog:create', $sitecontext)
|
|
|
1298 |
&& !has_capability('moodle/blog:view', $sitecontext)) {
|
|
|
1299 |
throw new \moodle_exception('donothaveblog', 'blog');
|
|
|
1300 |
}
|
|
|
1301 |
} else {
|
|
|
1302 |
if (!has_capability('moodle/blog:view', $sitecontext) || !blog_user_can_view_user_entry($userid)) {
|
|
|
1303 |
throw new \moodle_exception('cannotviewcourseblog', 'blog');
|
|
|
1304 |
}
|
|
|
1305 |
}
|
|
|
1306 |
}
|
|
|
1307 |
return array($courseid, $userid);
|
|
|
1308 |
}
|
|
|
1309 |
|
|
|
1310 |
/**
|
|
|
1311 |
* Get blog editor and attachment options for when creating or updating an entry
|
|
|
1312 |
*
|
|
|
1313 |
* @param mixed $entry The entry object (can be null)
|
|
|
1314 |
* @return array editor and attachment options
|
|
|
1315 |
*/
|
|
|
1316 |
function blog_get_editor_options(mixed $entry = null): array {
|
|
|
1317 |
global $CFG;
|
|
|
1318 |
|
|
|
1319 |
if (is_null($entry)) {
|
|
|
1320 |
$entry = new stdClass();
|
|
|
1321 |
$entry->id = null;
|
|
|
1322 |
}
|
|
|
1323 |
|
|
|
1324 |
$sitecontext = context_system::instance();
|
|
|
1325 |
|
|
|
1326 |
$summaryoptions = ['maxfiles' => 99, 'maxbytes' => $CFG->maxbytes, 'trusttext' => true, 'context' => $sitecontext,
|
|
|
1327 |
'subdirs' => file_area_contains_subdirs($sitecontext, 'blog', 'post', $entry->id)];
|
|
|
1328 |
$attachmentoptions = ['subdirs' => false, 'maxfiles' => 99, 'maxbytes' => $CFG->maxbytes];
|
|
|
1329 |
|
|
|
1330 |
return [$summaryoptions, $attachmentoptions];
|
|
|
1331 |
}
|