public static function update($id)
 {
     self::check_admin_logged_in();
     $attributes = self::get_attributes();
     $attributes['id'] = $id;
     $attributes['competition_name'] = Competition::find($attributes['competition_id'])->name;
     $attributes['competitor_name'] = Competitor::find($attributes['competitor_id'])->name;
     $attributes['standing'] = Participant::find($id)->standing;
     $participant = new Participant($attributes);
     $errors = $participant->validate_number();
     if (count($errors) == 0) {
         $participant->update();
         Redirect::to('/competition/' . $participant->competition_id . '/participants', array('message' => 'Kilpailijan numeroa muokattu onnistuneesti!'));
     } else {
         self::edit_view(array(Competition::find($participant->competition_id)), array(Competitor::find($participant->competitor_id)), $attributes, $errors);
     }
 }
 private function applySettingsToParticipants()
 {
     //only checked attributes are processed
     //returns FALSE if no attribute and/or no participant is checked
     //works only for single-Select-Inputs!
     //checked value = COL_NAME
     //form control name = COL_NAME
     //form control value = CELL_VALUE
     $partAttrs = $this->getRequest()->getParam('participantAttributeChecked');
     if ($partAttrs == NULL) {
         //no attribute checked
         return FALSE;
     }
     $data = array();
     foreach ($partAttrs as $attr => $attrName) {
         $attrValue = $this->getRequest()->getParam($attrName);
         //boolean: write 1 instead of "on" to database
         if ($attrName == Participant::COL_STOCK_ASSESSMENT && $attrValue == "on") {
             $attrValue = 1;
         }
         $data = $data + array($attrName => $attrValue);
     }
     //echo $data;
     $partIds = $this->getRequest()->getParam(Participant::COL_ID);
     if ($partIds == NULL) {
         //no participant checked
         return FALSE;
     }
     $part = new Participant();
     foreach ($partIds as $partId) {
         $where = $part->getAdapter()->quoteInto(Participant::COL_ID . ' = ?', $partId);
         $part->update($data, $where);
     }
     $this->redirectTo('index');
     return TRUE;
 }