public function OrderForm::buildForm in Frequently Asked Questions 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 ConfigFormBase::buildForm

File

src/Form/OrderForm.php, line 70

Class

OrderForm

Form for reordering the FAQ-s.

Namespace

Drupal\faq\Form

Code

public function buildForm(array $form, FormStateInterface $form_state, $category = NULL) {

  // Get category id from route values.
  if ($id = FaqHelper::searchInArgs('faq-page')) {
    $next_id = $id + 1;

    // Check if we're on a categorized faq page.
    if (is_numeric(FaqHelper::arg($next_id))) {
      $category = FaqHelper::arg($next_id);
    }
  }
  $order = $date_order = '';
  $faq_settings = $this
    ->config('faq.settings');
  $use_categories = $faq_settings
    ->get('use_categories');
  if (!$use_categories) {
    $step = "order";
  }
  elseif ($form_state
    ->getValues() != NULL && empty($category)) {
    $step = "categories";
  }
  else {
    $step = "order";
  }
  $form['step'] = array(
    '#type' => 'value',
    '#value' => $step,
  );

  // Categorized q/a.
  if ($step == "categories") {

    // Get list of categories.
    $vocabularies = Vocabulary::loadMultiple();
    $options = array();
    foreach ($vocabularies as $vid => $vobj) {
      $tree = $this->entityTypeManager
        ->getStorage('taxonomy_term')
        ->loadTree($vid);
      foreach ($tree as $term) {
        if (!FaqHelper::taxonomyTermCountNodes($term->tid)) {
          continue;
        }
        $options[$term->tid] = $this
          ->t($term->name);
        $form['choose_cat']['faq_category'] = array(
          '#type' => 'select',
          '#title' => t('Choose a category'),
          '#description' => t('Choose a category that you wish to order the questions for.'),
          '#options' => $options,
          '#multiple' => FALSE,
        );
        $form['choose_cat']['search'] = array(
          '#type' => 'submit',
          '#value' => t('Search'),
          '#submit' => array(
            'faq_order_settings_choose_cat_form_submit',
          ),
        );
      }
    }
  }
  else {
    $default_sorting = $faq_settings
      ->get('default_sorting');
    $default_weight = 0;
    if ($default_sorting != 'DESC') {
      $default_weight = 1000000;
    }
    $options = array();
    if (!empty($form_state
      ->getValue('faq_category'))) {
      $category = $form_state
        ->getValue('faq_category');
    }
    $langcode = $this->languageManager
      ->getCurrentLanguage()
      ->getId();

    // Uncategorized ordering.
    $query = $this->database
      ->select('node', 'n');
    $query
      ->join('node_field_data', 'd', 'n.nid = d.nid');
    $query
      ->fields('n', [
      'nid',
    ])
      ->fields('d', [
      'title',
    ])
      ->condition('n.type', 'faq')
      ->condition('d.langcode', $langcode)
      ->condition('d.status', 1)
      ->addTag('node_access');

    // Works, but involves variable concatenation - safe though, since
    // $default_weight is an integer.
    $query
      ->addExpression("COALESCE(w.weight, {$default_weight})", 'effective_weight');

    // Doesn't work in Postgres.
    // $query->addExpression('COALESCE(w.weight, CAST(:default_weight as SIGNED))', 'effective_weight', array(':default_weight' => $default_weight));.
    if (empty($category)) {
      $category = 0;
      $query
        ->leftJoin('faq_weights', 'w', 'n.nid = %alias.nid AND %alias.tid = :category', array(
        ':category' => $category,
      ));
      $query
        ->orderBy('effective_weight', 'ASC')
        ->orderBy('d.sticky', 'DESC')
        ->orderBy('d.created', $default_sorting == 'DESC' ? 'DESC' : 'ASC');
    }
    else {
      $query
        ->innerJoin('taxonomy_index', 'ti', '(n.nid = %alias.nid)');
      $query
        ->leftJoin('faq_weights', 'w', 'n.nid = %alias.nid AND %alias.tid = :category', array(
        ':category' => $category,
      ));
      $query
        ->condition('ti.tid', $category);
      $query
        ->orderBy('effective_weight', 'ASC')
        ->orderBy('d.sticky', 'DESC')
        ->orderBy('d.created', $default_sorting == 'DESC' ? 'DESC' : 'ASC');
    }
    $options = $query
      ->execute()
      ->fetchAll();
    $form['weight']['faq_category'] = array(
      '#type' => 'value',
      '#value' => $category,
    );

    // Show table ordering form.
    $form['order_no_cats']['#tree'] = TRUE;
    $form['order_no_cats']['#theme'] = 'faq_draggable_question_order_table';
    foreach ($options as $i => $record) {
      $form['order_no_cats'][$i]['nid'] = array(
        '#type' => 'hidden',
        '#value' => $record->nid,
      );
      $form['order_no_cats'][$i]['title'] = array(
        '#markup' => Html::escape($record->title),
      );
      $form['order_no_cats'][$i]['sort'] = array(
        '#type' => 'weight',
        '#delta' => count($options),
        '#default_value' => $i,
      );
    }
    $form['actions']['#type'] = 'actions';
    $form['actions']['submit'] = array(
      '#type' => 'submit',
      '#value' => $this
        ->t('Save order'),
      '#button_type' => 'primary',
    );
  }
  return $form;
}