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126 lines
4.5 KiB
126 lines
4.5 KiB
<?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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* Moodleform for the user interface for managing external blog links.
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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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if (!defined('MOODLE_INTERNAL')) {
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die('Direct access to this script is forbidden.'); // It must be included from a Moodle page.
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}
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require_once($CFG->libdir.'/formslib.php');
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class blog_edit_external_form extends moodleform {
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public function definition() {
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global $CFG;
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$mform =& $this->_form;
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$mform->addElement('url', 'url', get_string('url', 'blog'), array('size' => 60), array('usefilepicker' => false));
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$mform->setType('url', PARAM_URL);
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$mform->addRule('url', get_string('emptyurl', 'blog'), 'required', null, 'client');
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$mform->addHelpButton('url', 'url', 'blog');
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$mform->addElement('text', 'name', get_string('name', 'blog'));
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$mform->setType('name', PARAM_TEXT);
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$mform->addHelpButton('name', 'name', 'blog');
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$mform->addElement('textarea', 'description', get_string('description', 'blog'), array('cols' => 50, 'rows' => 7));
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$mform->addHelpButton('description', 'description', 'blog');
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// To filter external blogs by their tags we do not need to check if tags in moodle are enabled.
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$mform->addElement('text', 'filtertags', get_string('filtertags', 'blog'), array('size' => 50));
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$mform->setType('filtertags', PARAM_TAGLIST);
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$mform->addHelpButton('filtertags', 'filtertags', 'blog');
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$mform->addElement('tags', 'autotags', get_string('autotags', 'blog'),
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array('itemtype' => 'blog_external', 'component' => 'core'));
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$mform->addHelpButton('autotags', 'autotags', 'blog');
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$this->add_action_buttons();
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$mform->addElement('hidden', 'id');
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$mform->setType('id', PARAM_INT);
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$mform->setDefault('id', 0);
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$mform->addElement('hidden', 'returnurl');
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$mform->setType('returnurl', PARAM_URL);
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$mform->setDefault('returnurl', 0);
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}
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/**
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* Additional validation includes checking URL and tags
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*/
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public function validation($data, $files) {
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global $CFG;
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$errors = parent::validation($data, $files);
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require_once($CFG->libdir . '/simplepie/moodle_simplepie.php');
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$rss = new moodle_simplepie();
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$rssfile = $rss->registry->create('File', array($data['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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$errors['url'] = get_string('feedisinvalid', 'blog');
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} else {
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$rss->set_feed_url($data['url']);
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if (!$rss->init()) {
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$errors['url'] = get_string('emptyrssfeed', 'blog');
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}
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}
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return $errors;
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}
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public function definition_after_data() {
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global $CFG, $COURSE;
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$mform =& $this->_form;
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$name = trim($mform->getElementValue('name'));
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$description = trim($mform->getElementValue('description'));
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$url = $mform->getElementValue('url');
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if (empty($name) || empty($description)) {
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$rss = new moodle_simplepie($url);
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if (empty($name) && $rss->get_title()) {
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$mform->setDefault('name', $rss->get_title());
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}
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if (empty($description) && $rss->get_description()) {
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$mform->setDefault('description', $rss->get_description());
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}
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}
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if ($id = $mform->getElementValue('id')) {
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$mform->freeze('url');
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if ($mform->elementExists('filtertags')) {
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$mform->freeze('filtertags');
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}
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// TODO change the filtertags element to a multiple select, using the tags of the external blog
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// Use $rss->get_channel_tags().
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}
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}
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}
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