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/>.

/**

 * Cohort UI related functions and classes.

 *

 * @package    core_cohort

 * @copyright  2012 Petr Skoda  {@link http://skodak.org}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

require_once($CFG->dirroot . '/cohort/lib.php');

require_once($CFG->dirroot . '/user/selector/lib.php');

/**

 * Cohort assignment candidates

 */

class cohort_candidate_selector extends user_selector_base {

    protected $cohortid;

    public function __construct($name, $options) {

        $this->cohortid = $options['cohortid'];

        $options['includecustomfields'] = true;

        parent::__construct($name, $options);

    }

    /**

     * Candidate users

     * @param string $search

     * @return array

     */

    public function find_users($search) {

        global $DB;

        // By default wherecondition retrieves all users except the deleted, not confirmed and guest.

        list($wherecondition, $params) = $this->search_sql($search, 'u');

        $params = array_merge($params, $this->userfieldsparams);

        $params['cohortid'] = $this->cohortid;

        $fields      = 'SELECT u.id, ' . $this->userfieldsselects;

        $countfields = 'SELECT COUNT(1)';

        $sql = " FROM {user} u

            LEFT JOIN {cohort_members} cm ON (cm.userid = u.id AND cm.cohortid = :cohortid)

                $this->userfieldsjoin

                WHERE cm.id IS NULL AND $wherecondition";

        list($sort, $sortparams) = users_order_by_sql('u', $search, $this->accesscontext, $this->userfieldsmappings);

        $order = ' ORDER BY ' . $sort;

        if (!$this->is_validating()) {

            $potentialmemberscount = $DB->count_records_sql($countfields . $sql, $params);

            if ($potentialmemberscount > $this->maxusersperpage) {

                return $this->too_many_results($search, $potentialmemberscount);

            }

        }

        $availableusers = $DB->get_records_sql($fields . $sql . $order, array_merge($params, $sortparams));

        if (empty($availableusers)) {

            return array();

        }

        if ($search) {

            $groupname = get_string('potusersmatching', 'cohort', $search);

        } else {

            $groupname = get_string('potusers', 'cohort');

        }

        return array($groupname => $availableusers);

    }

    protected function get_options() {

        $options = parent::get_options();

        $options['cohortid'] = $this->cohortid;

        $options['file'] = 'cohort/locallib.php';

        return $options;

    }

}

/**

 * Cohort assignment candidates

 */

class cohort_existing_selector extends user_selector_base {

    protected $cohortid;

    public function __construct($name, $options) {

        $this->cohortid = $options['cohortid'];

        $options['includecustomfields'] = true;

        parent::__construct($name, $options);

    }

    /**

     * Candidate users

     * @param string $search

     * @return array

     */

    public function find_users($search) {

        global $DB;

        // By default wherecondition retrieves all users except the deleted, not confirmed and guest.

        list($wherecondition, $params) = $this->search_sql($search, 'u');

        $params = array_merge($params, $this->userfieldsparams);

        $params['cohortid'] = $this->cohortid;

        $fields      = 'SELECT u.id, ' . $this->userfieldsselects;

        $countfields = 'SELECT COUNT(1)';

        $sql = " FROM {user} u

                 JOIN {cohort_members} cm ON (cm.userid = u.id AND cm.cohortid = :cohortid)

                 $this->userfieldsjoin

                WHERE $wherecondition";

        list($sort, $sortparams) = users_order_by_sql('u', $search, $this->accesscontext, $this->userfieldsmappings);

        $order = ' ORDER BY ' . $sort;

        if (!$this->is_validating()) {

            $potentialmemberscount = $DB->count_records_sql($countfields . $sql, $params);

            if ($potentialmemberscount > $this->maxusersperpage) {

                return $this->too_many_results($search, $potentialmemberscount);

            }

        }

        $availableusers = $DB->get_records_sql($fields . $sql . $order, array_merge($params, $sortparams));

        if (empty($availableusers)) {

            return array();

        }

        if ($search) {

            $groupname = get_string('currentusersmatching', 'cohort', $search);

        } else {

            $groupname = get_string('currentusers', 'cohort');

        }

        return array($groupname => $availableusers);

    }

    protected function get_options() {

        $options = parent::get_options();

        $options['cohortid'] = $this->cohortid;

        $options['file'] = 'cohort/locallib.php';

        return $options;

    }

}