public function PollViewForm::buildForm in Poll 8

Form constructor.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Return value

array The form structure.

Overrides FormInterface::buildForm

File

src/Form/PollViewForm.php, line 53

Class

PollViewForm

Displays banned IP addresses.

Namespace

Drupal\poll\Form

Code

public function buildForm(array $form, FormStateInterface $form_state, Request $request = NULL, $view_mode = 'full') {

  // Add the poll to the form.
  $form['poll']['#type'] = 'value';
  $form['poll']['#value'] = $this->poll;
  $form['#view_mode'] = $view_mode;
  if ($this
    ->showResults($this->poll, $form_state)) {

    // Check if the user already voted. The form is still being built but
    // the Vote button won't be added so the submit callbacks will not be
    // called. Directly check for the request method and use the raw user
    // input.
    if ($request
      ->isMethod('POST') && $this->poll
      ->hasUserVoted()) {
      $input = $form_state
        ->getUserInput();
      if (isset($input['op']) && $input['op'] == $this
        ->t('Vote')) {

        // If this happened, then the form submission was likely a cached page.
        // Force a session for this user so he can see the results.
        $this
          ->messenger()
          ->addError($this
          ->t('Your vote for this poll has already been submitted.'));
        $_SESSION['poll_vote'][$this->poll
          ->id()] = FALSE;
      }
    }
    $form['results'] = $this
      ->showPollResults($this->poll, $view_mode);

    // For all view modes except full and block (as block displays it as the
    // block title), display the question.
    if ($view_mode != 'full' && $view_mode != 'block') {
      $form['results']['#show_question'] = TRUE;
    }
  }
  else {
    $options = $this->poll
      ->getOptions();
    if ($options) {
      $form['choice'] = array(
        '#type' => 'radios',
        '#title' => t('Choices'),
        '#title_display' => 'invisible',
        '#options' => $options,
      );
    }
    $form['#theme'] = 'poll_vote';
    $form['#entity'] = $this->poll;
    $form['#action'] = $this->poll
      ->toUrl()
      ->setOption('query', \Drupal::destination()
      ->getAsArray())
      ->toString();

    // Set a flag to hide results which will be removed if we want to view
    // results when the form is rebuilt.
    $form_state
      ->set('show_results', FALSE);

    // For all view modes except full and block (as block displays it as the
    // block title), display the question.
    if ($view_mode != 'full' && $view_mode != 'block') {
      $form['#show_question'] = TRUE;
    }
  }
  $form['actions'] = $this
    ->actions($form, $form_state, $this->poll);
  $form['#cache'] = array(
    'tags' => $this->poll
      ->getCacheTags(),
  );
  return $form;
}