/**
  * @see Page::readParameters()
  */
 public function readParameters()
 {
     MessageForm::readParameters();
     if (isset($_REQUEST['priceID'])) {
         $this->priceID = intval($_REQUEST['priceID']);
     }
     $this->entry = new ContestPriceEditor($this->priceID);
     if (!$this->entry->priceID || !$this->entry->isEditable()) {
         throw new IllegalLinkException();
     }
 }