Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

// A lot of this initial stuff is copied from mod/data/view.php

require_once('../../../../config.php');

require_once('../../lib.php');

// Optional params: row id "rid" - if set then export just one, otherwise export all

$d       = required_param('d', PARAM_INT);   // database id

$fieldid = required_param('fieldid', PARAM_INT);   // field id

$rid     = optional_param('rid', 0, PARAM_INT);    //record id

$url = new moodle_url('/mod/data/field/latlong/kml.php', array('d'=>$d, 'fieldid'=>$fieldid));

if ($rid !== 0) {

    $url->param('rid', $rid);

}

$PAGE->set_url($url);

if ($rid) {

    if (! $record = $DB->get_record('data_records', array('id'=>$rid))) {

        throw new \moodle_exception('invalidrecord', 'data');

    }

    if (! $data = $DB->get_record('data', array('id'=>$record->dataid))) {

        throw new \moodle_exception('invalidid', 'data');

    }

    if (! $course = $DB->get_record('course', array('id'=>$data->course))) {

        throw new \moodle_exception('coursemisconf');

    }

    if (! $cm = get_coursemodule_from_instance('data', $data->id, $course->id)) {

        throw new \moodle_exception('invalidcoursemodule');

    }

    if (! $field = $DB->get_record('data_fields', array('id'=>$fieldid))) {

        throw new \moodle_exception('invalidfieldid', 'data');

    }

    if (! $field->type == 'latlong') { // Make sure we're looking at a latlong data type!

        throw new \moodle_exception('invalidfieldtype', 'data');

    }

    if (! $content = $DB->get_record('data_content', array('fieldid'=>$fieldid, 'recordid'=>$rid))) {

        throw new \moodle_exception('nofieldcontent', 'data');

    }

} else {   // We must have $d

    if (! $data = $DB->get_record('data', array('id'=>$d))) {

        throw new \moodle_exception('invalidid', 'data');

    }

    if (! $course = $DB->get_record('course', array('id'=>$data->course))) {

        throw new \moodle_exception('coursemisconf');

    }

    if (! $cm = get_coursemodule_from_instance('data', $data->id, $course->id)) {

        throw new \moodle_exception('invalidcoursemodule');

    }

    if (! $field = $DB->get_record('data_fields', array('id'=>$fieldid))) {

        throw new \moodle_exception('invalidfieldid', 'data');

    }

    if (! $field->type == 'latlong') { // Make sure we're looking at a latlong data type!

        throw new \moodle_exception('invalidfieldtype', 'data');

    }

    $record = NULL;

}

require_course_login($course, true, $cm);

$context = context_module::instance($cm->id);

// If we have an empty Database then redirect because this page is useless without data.

if (has_capability('mod/data:managetemplates', $context)) {

    if (!$DB->record_exists('data_fields', array('dataid'=>$data->id))) {      // Brand new database!

        redirect($CFG->wwwroot.'/mod/data/field.php?d='.$data->id);  // Redirect to field entry

    }

}

//header('Content-type: text/plain'); // This is handy for debug purposes to look at the KML in the browser

header('Content-type: application/vnd.google-earth.kml+xml kml');

header('Content-Disposition: attachment; filename="moodleearth-'.$d.'-'.$rid.'-'.$fieldid.'.kml"');

echo data_latlong_kml_top();

if($rid) { // List one single item

    $pm = new stdClass();

    $pm->name = data_latlong_kml_get_item_name($content, $field);

    $pm->description = "<a href='$CFG->wwwroot/mod/data/view.php?d=$d&rid=$rid'>Item #$rid</a> in Moodle data activity";

    $pm->long = $content->content1;

    $pm->lat = $content->content;

    echo data_latlong_kml_placemark($pm);

} else {   // List all items in turn

    $contents = $DB->get_records('data_content', array('fieldid'=>$fieldid));

    echo '<Document>';

    foreach($contents as $content) {

        $pm->name = data_latlong_kml_get_item_name($content, $field);

        $pm->description = "<a href='$CFG->wwwroot/mod/data/view.php?d=$d&rid=$content->recordid'>Item #$content->recordid</a> in Moodle data activity";

        $pm->long = $content->content1;

        $pm->lat = $content->content;

        echo data_latlong_kml_placemark($pm);

    }

    echo '</Document>';

}

echo data_latlong_kml_bottom();

function data_latlong_kml_top() {

    return '<?xml version="1.0" encoding="UTF-8"?>

<kml xmlns="http://earth.google.com/kml/2.0">

';

}

function data_latlong_kml_placemark($pm) {

    return '<Placemark>

  <description>'.$pm->description.'</description>

  <name>'.$pm->name.'</name>

  <LookAt>

    <longitude>'.$pm->long.'</longitude>

    <latitude>'.$pm->lat.'</latitude>

    <range>30500.8880792294568</range>

    <tilt>46.72425699662645</tilt>

    <heading>0.0</heading>

  </LookAt>

  <visibility>0</visibility>

  <Point>

    <extrude>1</extrude>

    <altitudeMode>relativeToGround</altitudeMode>

    <coordinates>'.$pm->long.','.$pm->lat.',50</coordinates>

  </Point>

</Placemark>

';

}

function data_latlong_kml_bottom() {

    return '</kml>';

}

function data_latlong_kml_get_item_name($content, $field) {

    global $DB;

    // $field->param2 contains the user-specified labelling method

    $name = '';

    if($field->param2 > 0) {

        $name = htmlspecialchars($DB->get_field('data_content', 'content', array('fieldid'=>$field->param2, 'recordid'=>$content->recordid)), ENT_COMPAT);

    }elseif($field->param2 == -2) {

        $name = $content->content . ', ' . $content->content1;

    }

    if($name=='') { // Done this way so that "item #" is the default that catches any problems

        $name = get_string('entry', 'data') . " #$content->recordid";

    }

    return $name;

}