original_string: protected function validate_draft_files() {
          global $USER;
          $mform =& $this->_form;
  
          $errors = array();
          //Go through all the required elements and make sure you hit filepicker or
          //filemanager element.
          foreach ($mform->_rules as $elementname => $rules) {
              $elementtype = $mform->getElementType($elementname);
              //If element is of type filepicker then do validation
              if (($elementtype == 'filepicker') || ($elementtype == 'filemanager')){
                  //Check if rule defined is required rule
                  foreach ($rules as $rule) {
                      if ($rule['type'] == 'required') {
                          $draftid = (int)$mform->getSubmitValue($elementname);
                          $fs = get_file_storage();
                          $context = context_user::instance($USER->id);
                          if (!$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, 'id DESC', false)) {
                              $errors[$elementname] = $rule['message'];
                          }
                      }
                  }
              }
          }
          // Check all the filemanager elements to make sure they do not have too many
          // files in them.
          foreach ($mform->_elements as $element) {
              if ($element->_type == 'filemanager') {
                  $maxfiles = $element->getMaxfiles();
                  if ($maxfiles > 0) {
                      $draftid = (int)$element->getValue();
                      $fs = get_file_storage();
                      $context = context_user::instance($USER->id);
                      $files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, '', false);
                      if (count($files) > $maxfiles) {
                          $errors[$element->getName()] = get_string('err_maxfiles', 'form', $maxfiles);
                      }
                  }
              }
          }
          if (empty($errors)) {
              return true;
          } else {
              return $errors;
          }
      }
code: protected function validate_draft_files() {
          global $USER;
          $mform =& $this->_form;
  
          $errors = array();
          //Go through all the required elements and make sure you hit filepicker or
          //filemanager element.
          foreach ($mform->_rules as $elementname => $rules) {
              $elementtype = $mform->getElementType($elementname);
              //If element is of type filepicker then do validation
              if (($elementtype == 'filepicker') || ($elementtype == 'filemanager')){
                  //Check if rule defined is required rule
                  foreach ($rules as $rule) {
                      if ($rule['type'] == 'required') {
                          $draftid = (int)$mform->getSubmitValue($elementname);
                          $fs = get_file_storage();
                          $context = context_user::instance($USER->id);
                          if (!$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, 'id DESC', false)) {
                              $errors[$elementname] = $rule['message'];
                          }
                      }
                  }
              }
          }
          // Check all the filemanager elements to make sure they do not have too many
          // files in them.
          foreach ($mform->_elements as $element) {
              if ($element->_type == 'filemanager') {
                  $maxfiles = $element->getMaxfiles();
                  if ($maxfiles > 0) {
                      $draftid = (int)$element->getValue();
                      $fs = get_file_storage();
                      $context = context_user::instance($USER->id);
                      $files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, '', false);
                      if (count($files) > $maxfiles) {
                          $errors[$element->getName()] = get_string('err_maxfiles', 'form', $maxfiles);
                      }
                  }
              }
          }
          if (empty($errors)) {
              return true;
          } else {
              return $errors;
          }
      }
code_tokens: protected function validate_draft_files ( ) { global $ USER ; $ mform = & $ this -> _form ; $ errors = array ( ) ; //Go through all the required elements and make sure you hit filepicker or //filemanager element. foreach ( $ mform -> _rules as $ elementname => $ rules ) { $ elementtype = $ mform -> getElementType ( $ elementname ) ; //If element is of type filepicker then do validation if ( ( $ elementtype == 'filepicker' ) || ( $ elementtype == 'filemanager' ) ) { //Check if rule defined is required rule foreach ( $ rules as $ rule ) { if ( $ rule [ 'type' ] == 'required' ) { $ draftid = ( int ) $ mform -> getSubmitValue ( $ elementname ) ; $ fs = get_file_storage ( ) ; $ context = context_user :: instance ( $ USER -> id ) ; if ( ! $ files = $ fs -> get_area_files ( $ context -> id , 'user' , 'draft' , $ draftid , 'id DESC' , false ) ) { $ errors [ $ elementname ] = $ rule [ 'message' ] ; } } } } } // Check all the filemanager elements to make sure they do not have too many // files in them. foreach ( $ mform -> _elements as $ element ) { if ( $ element -> _type == 'filemanager' ) { $ maxfiles = $ element -> getMaxfiles ( ) ; if ( $ maxfiles > 0 ) { $ draftid = ( int ) $ element -> getValue ( ) ; $ fs = get_file_storage ( ) ; $ context = context_user :: instance ( $ USER -> id ) ; $ files = $ fs -> get_area_files ( $ context -> id , 'user' , 'draft' , $ draftid , '' , false ) ; if ( count ( $ files ) > $ maxfiles ) { $ errors [ $ element -> getName ( ) ] = get_string ( 'err_maxfiles' , 'form' , $ maxfiles ) ; } } } } if ( empty ( $ errors ) ) { return true ; } else { return $ errors ; } }
docstring: Internal method. Validates filepicker and filemanager files if they are
  set as required fields. Also, sets the error message if encountered one.
  
  @return bool|array with errors
docstring_tokens: Internal method . Validates filepicker and filemanager files if they are set as required fields . Also sets the error message if encountered one .