function _paragraphs_multiple_field_validate in Paragraphs 7

Form Validation for submitting a node with required paragraphs fields.

1 string reference to '_paragraphs_multiple_field_validate'

paragraphs_field_multiple_value_form in ./paragraphs.field_widget.inc

Special handling to create form elements for multiple values.

File

./paragraphs.field_widget.inc, line 856

Holds functions for the paragraphs widgets.

Code

function _paragraphs_multiple_field_validate($elements, &$form_state) {

  // Check child fields of required paragraphs.
  if (!empty($elements['#required'])) {
    $field_values = array();
    $field_state = field_form_get_state($elements['#field_parents'], $elements['#field_name'], $elements['#language'], $form_state);
    $field_info = field_info_field($elements['#field_name']);
    if (empty($elements['#parents'])) {

      // Try top level structure if there are no parents.
      if (!empty($form_state['values'][$elements['#field_name']][LANGUAGE_NONE])) {
        $field_values = $form_state['values'][$elements['#field_name']][LANGUAGE_NONE];
      }
    }
    else {

      // Extract field values.
      $key_exists = NULL;
      $field_values_found = drupal_array_get_nested_value($form_state['values'], $elements['#parents'], $key_exists);
      if ($key_exists) {
        $field_values = $field_values_found;
      }
    }
    if ($field_values) {
      foreach (array_keys($field_values) as $item_key) {
        if (!is_numeric($item_key)) {

          // Remove non field item deltas.
          unset($field_values[$item_key]);
        }
        elseif (isset($field_state['entity'][$item_key])) {

          // Handle field item entity forms that build new objects in the field
          // state. Examples: field_collection_item, paragraphs_item.
          // If this is not set, then the field_is_empty check in
          // _field_filter_items() fails.
          $field_values[$item_key] = array(
            'entity' => $field_state['entity'][$item_key],
          );
        }
      }

      // Get non-empty items.
      $field_values = _field_filter_items($field_info, $field_values);
    }
    if (count($field_values) < 1) {
      form_error($elements, t('The "!name" field is required', array(
        '!name' => $elements['#title'],
      )));
    }
  }
}