function unique_field_form_validate in Unique field 8.2

Validate the node for unique field conditions on submission.

1 string reference to 'unique_field_form_validate'

unique_field_form_alter in ./unique_field.module

Hook_form_BASE_FORM_ID_alter().

File

./unique_field.module, line 285

Code

function unique_field_form_validate(array &$form, FormStateInterface $form_state) {

  // If override permission set show warring message and skip validation.
  if ($form_state
    ->getValues()['unique_field_override'] == 1) {
    return;
  }

  // Load default  configuration for validation.
  $config = \Drupal::configFactory()
    ->get('unique_field.settings');
  $fields = $config
    ->get('unique_field_settings.' . $form['bundle'] . '.fields');
  $scope = $config
    ->get('unique_field_settings.' . $form['bundle'] . '.scope');
  $comp_type = $config
    ->get('unique_field_settings.' . $form['bundle'] . '.comp');
  $title = $form_state
    ->getValues()['title'][0]['value'];
  $langcode = $form_state
    ->getValues()['langcode'][0]['value'];
  $node = \Drupal::routeMatch()
    ->getParameter('node');
  if ($comp_type == UNIQUE_FIELD_COMP_ALL) {
    $query = db_select('node_field_data', 'n');
    $query
      ->fields('n', array(
      'nid',
    ));
  }
  foreach ($fields as $field_name) {
    if ($comp_type == UNIQUE_FIELD_COMP_EACH) {
      $query = db_select('node_field_data', 'n');
      $query
        ->fields('n', array(
        'nid',
      ));
    }
    $query = db_select('node_field_data', 'n');
    $query
      ->fields('n', array(
      'nid',
    ));
    if ($field_name == 'title') {
      $query
        ->condition('n.title', $title);
    }
    else {
      $field_type = \Drupal\field\Entity\FieldStorageConfig::loadByName('node', $field_name)
        ->get('type');
      $values = $form_state
        ->getValues()[$field_name];
      $field_values = array();
      foreach ($values as $value) {
        $field_values[] = $field_type == 'entity_reference' ? $value['target_id'] : $value['value'];
      }
      if ($scope == UNIQUE_FIELD_SCOPE_NODE) {
        $unique_values = array_unique($field_values);
        if (count($field_values) != count($unique_values)) {
          $form_state
            ->setErrorByName($field_name, t('The field @field_name has to be unique.', array(
            '@field_name' => $field_name,
          )));
          $form_state
            ->setRebuild();
          continue;
        }
      }
      $table_name = 'node__' . $field_name;
      $col_name = $field_type == 'entity_reference' ? $field_name . '_target_id' : $field_name . '_value';
      $query
        ->join($table_name, 'f', 'n.nid = f.entity_id');
      $query
        ->condition('f.' . $col_name, $field_values, 'IN');
      if ($scope == UNIQUE_FIELD_SCOPE_LANGUAGE) {
        $query
          ->condition('f.langcode', $langcode);
      }
    }
    if ($scope == UNIQUE_FIELD_SCOPE_TYPE) {
      $query
        ->condition('n.type', $form['bundle']);
    }
    if ($node) {
      $query
        ->condition('n.nid', $node
        ->id(), '<>');
    }
    $res = $query
      ->execute()
      ->fetchField();
    if ($res) {
      $form_state
        ->setErrorByName($field_name, t('The field @field_name has to be unique.', array(
        '@field_name' => $field_name,
      )));
      $user = \Drupal::currentUser();
      if ($user
        ->hasPermission('unique_field_perm_bypass')) {
        $form_id = str_replace('_', '-', $form['#id']);
        $msg = t('Your form has unique field validation errors. Click !here to bypass this check and resubmit.', array(
          '!here' => "<a href=\"#\" onclick=\"jQuery('form#" . $form_id . " input[name=\\'unique_field_override\\']').val(1);jQuery('form#" . $form_id . "').submit();return false;\">" . t('here') . '</a>',
        ));
        drupal_set_message($msg, 'warning');
      }
      $form_state
        ->setRebuild();
    }
  }
}