public function MultiFormBuilder::getForm in Multiple forms 8

Gets a renderable form array.

Every argument is a list of arguments to be passed to FormBuilder::getForm. For example, if the first form is called as FormBuilder::getForm($form_id1, $arg1, $arg2); and the second as FormBuilder::getForm($form_id2, $arg3, $arg4) call MultiFormBuilder::getForm(array($form_id1, $arg1, $arg2), array($form_id2, $arg3, $arg4)).

Return value

array The form array.

Overrides MultiFormBuilderInterface::getForm

File

src/MultiFormBuilder.php, line 90

Contains \Drupal\multiform\FormBuilder.

Class

MultiFormBuilder

Namespace

Drupal\multiform

Code

public function getForm() {
  $all_args = func_get_args();
  $redirect = NULL;
  $form = \Drupal::service('element_info')
    ->getInfo('form');
  $form['#id'] = 'multiform';

  //$this->getFormId($all_args);
  $form['#attributes'] = array();

  // We need a $form_id so that the submission of other forms (like search) do
  // not disturb us.
  $form['form_id'] = array(
    '#type' => 'hidden',
    '#value' => $form['#id'],
    '#id' => Html::getUniqueId('edit-multiform'),
    '#name' => 'form_id',
    '#attributes' => array(),
  );
  $randomGenerator = new Random();
  $build_id = 'form-' . $randomGenerator
    ->name();

  // We need a $form_build_id because the buttons are cached and the values
  // belonging to them in $_POST are handed to each form so those can recognize
  // the buttons pressed.
  $form['form_build_id'] = array(
    '#type' => 'hidden',
    '#value' => $build_id,
    '#id' => $build_id,
    '#name' => 'form_build_id',
    '#attributes' => array(),
  );

  // This is where buttons will be collected.
  $form['buttons'] = array();
  $form['buttons']['#weight'] = 1000;
  $form['buttons']['#build_id'] = $build_id;
  $form_state_save = new FormState();
  $button_names = array();

  // The only way to support $_GET would be to accept $form_state. Maybe later.
  $post = $this->request->request
    ->all();
  if ($post && isset($post['form_id']) && $post['form_id'] == $form['#id'] && !empty($post['form_build_id'])) {
    $form_state_save
      ->setUserInput($post);
    $_files_save = $_FILES;

    // Retrieve buttons.
    if ($button_elements = \Drupal::formBuilder()
      ->getCache($post['form_build_id'], $form_state_save)) {
      foreach ($button_elements as $button) {

        // For each button, save it's name. Later on we will need the button
        // names because the buttons are used in the multiform but their values
        // in $_POST (if it exists) needs to be handed down to each form so
        // those can recognize the button press.
        $name = isset($button_elements['#name']) ? $button_elements['#name'] : 'op';
        $button_names[$name] = $name;
      }
    }
  }
  foreach ($all_args as $key => $args) {
    $form_arg = array_shift($args);
    $current_form_state = new FormState();
    $current_form_state
      ->addBuildInfo('args', $args);

    // Reset $form_state and disable redirection.
    $current_form_state
      ->disableRedirect();

    // This line is copied literally from drupal_get_form().
    $index = $this->formBuilder
      ->getFormId($form_arg, $current_form_state) . '_' . $key;
    if (isset($post['multiform'][$index])) {

      // drupal_build_form() honors our $form_state['input'] setup.
      $current_form_input = $post['multiform'][$index];

      // Pass in the information about pressed buttons too.
      $form_state_input = $form_state_save
        ->getUserInput();
      foreach ($button_names as $name) {
        if (isset($form_state_input[$name])) {
          $current_form_input[$name] = $form_state_input[$name];
        }
      }
      $current_form_state
        ->setUserInput($current_form_input);
    }
    $files = array();
    if (isset($_files_save['multiform']['name'][$index])) {
      foreach (array(
        'name',
        'type',
        'tmp_name',
        'error',
        'size',
      ) as $files_key) {

        // PHP is seriously messed up, dude.
        foreach ($this->request->files['multiform'][$files_key][$index] as $running_out_of_indexes => $data) {
          $files[$running_out_of_indexes][$files_key] = $data;
        }
      }
    }
    $current_form_state
      ->addBuildInfo('files', $files);
    $current_form = $this->formBuilder
      ->buildForm($form_arg, $current_form_state);

    // Do not render the <form> tags. Instead we render the <form> as a <div>.
    $current_form['#theme_wrappers'] = array(
      'container',
    );
    $this
      ->multiformGetForm($current_form, $form['buttons'], $index);

    // Unset any attributes specifics to form tags.
    $disallowed_attributes = array(
      'enctype',
      'action',
      'method',
    );
    $current_form['#attributes'] = array_diff_key($current_form['#attributes'], array_flip($disallowed_attributes));
    $form['multiform'][$index] = $current_form;
    if (isset($form_state['has_file_element'])) {
      $form['#attributes']['enctype'] = 'multipart/form-data';
    }

    // Keep the redirect from the first form.
    if (!$key) {
      $redirect = $current_form_state
        ->getRedirect() ? $current_form_state : array();
    }
  }
  $this->formBuilder
    ->setCache($build_id, $form['buttons'], $form_state_save);
  if (!empty($redirect)) {

    // We forced $form_state['no_redirect'] to TRUE above, so unset it in order
    // to allow the redirection to proceed.
    $redirect
      ->disableRedirect(FALSE);
    $this->formBuilder
      ->redirectForm($redirect);
  }
  return $form;
}