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Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403] [Versions 400 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Customfield package
  19   *
  20   * @package   core_customfield
  21   * @copyright 2018 David Matamoros <davidmc@moodle.com>
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace core_customfield;
  26  
  27  defined('MOODLE_INTERNAL') || die;
  28  
  29  /**
  30   * Class field_config_form
  31   *
  32   * @package core_customfield
  33   * @copyright 2018 David Matamoros <davidmc@moodle.com>
  34   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class field_config_form extends \core_form\dynamic_form {
  37  
  38      /** @var field_controller */
  39      protected $field;
  40  
  41      /**
  42       * Class definition
  43       *
  44       * @throws \coding_exception
  45       */
  46      public function definition() {
  47          $mform = $this->_form;
  48  
  49          $field = $this->get_field();
  50          $handler = $field->get_handler();
  51  
  52          $mform->addElement('header', '_commonsettings', get_string('commonsettings', 'core_customfield'));
  53  
  54          $mform->addElement('text', 'name', get_string('fieldname', 'core_customfield'), 'size="50"');
  55          $mform->addRule('name', null, 'required', null, 'client');
  56          $mform->setType('name', PARAM_TEXT);
  57  
  58          // Accepted values for 'shortname' would follow [a-z0-9_] pattern,
  59          // but we are accepting any PARAM_TEXT value here,
  60          // and checking [a-zA-Z0-9_] pattern in validation() function to throw an error when needed.
  61          $mform->addElement('text', 'shortname', get_string('fieldshortname', 'core_customfield'), 'size=20');
  62          $mform->addHelpButton('shortname', 'shortname', 'core_customfield');
  63          $mform->addRule('shortname', null, 'required', null, 'client');
  64          $mform->setType('shortname', PARAM_TEXT);
  65  
  66          $desceditoroptions = $handler->get_description_text_options();
  67          $mform->addElement('editor', 'description_editor', get_string('description', 'core_customfield'), null, $desceditoroptions);
  68          $mform->addHelpButton('description_editor', 'description', 'core_customfield');
  69  
  70          // If field is required.
  71          $mform->addElement('selectyesno', 'configdata[required]', get_string('isfieldrequired', 'core_customfield'));
  72          $mform->addHelpButton('configdata[required]', 'isfieldrequired', 'core_customfield');
  73          $mform->setType('configdata[required]', PARAM_BOOL);
  74  
  75          // If field data is unique.
  76          $mform->addElement('selectyesno', 'configdata[uniquevalues]', get_string('isdataunique', 'core_customfield'));
  77          $mform->addHelpButton('configdata[uniquevalues]', 'isdataunique', 'core_customfield');
  78          $mform->setType('configdata[uniquevalues]', PARAM_BOOL);
  79  
  80          // Field specific settings from field type.
  81          $field->config_form_definition($mform);
  82  
  83          // Handler/component settings.
  84          $handler->config_form_definition($mform);
  85  
  86          // We add hidden fields.
  87          $mform->addElement('hidden', 'categoryid');
  88          $mform->setType('categoryid', PARAM_INT);
  89  
  90          $mform->addElement('hidden', 'type');
  91          $mform->setType('type', PARAM_COMPONENT);
  92  
  93          $mform->addElement('hidden', 'id');
  94          $mform->setType('id', PARAM_INT);
  95  
  96          // This form is only used inside modal dialogues and never needs action buttons.
  97      }
  98  
  99      /**
 100       * Field data validation
 101       *
 102       * @param array $data
 103       * @param array $files
 104       * @return array
 105       */
 106      public function validation($data, $files = array()) {
 107          global $DB;
 108  
 109          $errors = array();
 110          $field = $this->get_field();
 111          $handler = $field->get_handler();
 112  
 113          // Check the shortname is specified and is unique for this component-area-itemid combination.
 114          if (!preg_match('/^[a-z0-9_]+$/', $data['shortname'])) {
 115              // Check allowed pattern (numbers, letters and underscore).
 116              $errors['shortname'] = get_string('invalidshortnameerror', 'core_customfield');
 117          } else if ($DB->record_exists_sql('SELECT 1 FROM {customfield_field} f ' .
 118              'JOIN {customfield_category} c ON c.id = f.categoryid ' .
 119              'WHERE f.shortname = ? AND f.id <> ? AND c.component = ? AND c.area = ? AND c.itemid = ?',
 120              [$data['shortname'], $data['id'],
 121                  $handler->get_component(), $handler->get_area(), $handler->get_itemid()])) {
 122              $errors['shortname'] = get_string('formfieldcheckshortname', 'core_customfield');
 123          }
 124  
 125          $errors = array_merge($errors, $field->config_form_validation($data, $files));
 126  
 127          return $errors;
 128      }
 129  
 130      /**
 131       * Get field
 132       *
 133       * @return field_controller
 134       * @throws \moodle_exception
 135       */
 136      protected function get_field(): field_controller {
 137          if ($this->field === null) {
 138              if (!empty($this->_ajaxformdata['id'])) {
 139                  $this->field = \core_customfield\field_controller::create((int)$this->_ajaxformdata['id']);
 140              } else if (!empty($this->_ajaxformdata['categoryid']) && !empty($this->_ajaxformdata['type'])) {
 141                  $category = \core_customfield\category_controller::create((int)$this->_ajaxformdata['categoryid']);
 142                  $type = clean_param($this->_ajaxformdata['type'], PARAM_PLUGIN);
 143                  $this->field = \core_customfield\field_controller::create(0, (object)['type' => $type], $category);
 144              } else {
 145                  throw new \moodle_exception('fieldnotfound', 'core_customfield');
 146              }
 147          }
 148          return $this->field;
 149      }
 150  
 151      /**
 152       * Check if current user has access to this form, otherwise throw exception
 153       *
 154       * Sometimes permission check may depend on the action and/or id of the entity.
 155       * If necessary, form data is available in $this->_ajaxformdata
 156       */
 157      protected function check_access_for_dynamic_submission(): void {
 158          $field = $this->get_field();
 159          $handler = $field->get_handler();
 160          if (!$handler->can_configure()) {
 161              throw new \moodle_exception('nopermissionconfigure', 'core_customfield');
 162          }
 163      }
 164  
 165      /**
 166       * Load in existing data as form defaults
 167       *
 168       * Can be overridden to retrieve existing values from db by entity id and also
 169       * to preprocess editor and filemanager elements
 170       *
 171       * Example:
 172       *     $this->set_data(get_entity($this->_ajaxformdata['id']));
 173       */
 174      public function set_data_for_dynamic_submission(): void {
 175          $this->set_data(api::prepare_field_for_config_form($this->get_field()));
 176      }
 177  
 178      /**
 179       * Process the form submission
 180       *
 181       * This method can return scalar values or arrays that can be json-encoded, they will be passed to the caller JS.
 182       *
 183       * @return mixed
 184       */
 185      public function process_dynamic_submission() {
 186          $data = $this->get_data();
 187          $field = $this->get_field();
 188          $handler = $field->get_handler();
 189          $handler->save_field_configuration($field, $data);
 190          return null;
 191      }
 192  
 193      /**
 194       * Form context
 195       * @return \context
 196       */
 197      protected function get_context_for_dynamic_submission(): \context {
 198          return $this->get_field()->get_handler()->get_configuration_context();
 199      }
 200  
 201      /**
 202       * Page url
 203       * @return \moodle_url
 204       */
 205      protected function get_page_url_for_dynamic_submission(): \moodle_url {
 206          $field = $this->get_field();
 207          if ($field->get('id')) {
 208              $params = ['action' => 'editfield', 'id' => $field->get('id')];
 209          } else {
 210              $params = ['action' => 'addfield', 'categoryid' => $field->get('categoryid'), 'type' => $field->get('type')];
 211          }
 212          return new \moodle_url($field->get_handler()->get_configuration_url(), $params);
 213      }
 214  }