filter/local_settings_form.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * A Moodle form base class for editing local filter settings.
  20  *
  21  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
  22  * @package    core
  23  * @subpackage filter
  24  */
  25 defined('MOODLE_INTERNAL') || die();
  26
  27 require_once($CFG->libdir . '/formslib.php');
  28
  29 abstract class filter_local_settings_form extends moodleform {
  30     protected $filter;
  31     protected $context;
  32
  33     public function __construct($submiturl, $filter, $context) {
  34         $this->filter = $filter;
  35         $this->context = $context;
  36         parent::moodleform($submiturl);
  37     }
  38
  39     /**
  40      * Build the form definition. Rather than overriding this method, you
  41      * should probably override definition_inner instead.
  42      *
  43      * This method adds the necessary hidden fields and submit buttons,
  44      * and calls definition_inner to insert the custom controls in the appropriate place.
  45      */
  46     public function definition() {
  47         $mform = $this->_form;
  48
  49         $this->definition_inner($mform);
  50
  51         $mform->addElement('hidden', 'contextid');
  52         $mform->setType('contextid', PARAM_INT);
  53         $mform->setDefault('contextid', $this->context->id);
  54
  55         $mform->addElement('hidden', 'filter');
  56         $mform->setType('filter', PARAM_SAFEPATH);
  57         $mform->setDefault('filter', $this->filter);
  58
  59         $this->add_action_buttons();
  60     }
  61
  62     /**
  63      * Override this method to add your form controls.
  64      * @param $mform the form we are building. $this->_form, but passed in for convenience.
  65      */
  66     abstract protected function definition_inner($mform);
  67
  68     /**
  69      * Override this method to save the settings to the database. The default
  70      * implementation will probably be sufficient for most simple cases.
  71      * @param object $data the form data that was submitted.
  72      */
  73     public function save_changes($data) {
  74         $data = (array) $data;
  75         unset($data['filter']);
  76         unset($data['contextid']);
  77         foreach ($data as $name => $value) {
  78             if ($value !== '') {
  79                 filter_set_local_config($this->filter, $this->context->id, $name, $value);
  80             } else {
  81                 filter_unset_local_config($this->filter, $this->context->id, $name);
  82             }
  83         }
  84     }
  85 }