function color_field_field_validate in Color Field 7.2

Same name and namespace in other branches

1. 7 color_field.module \color_field_field_validate()

Implements hook_field_validate().

We want to verify that the color items only contain RGB hex values like this: #RRGGBB. If the item validates, we do nothing. If it doesn't validate, we add our own error notification to the $errors parameter.

See also

color_field_widget_error()

File

./color_field.field.inc, line 113

Field hooks to implement a color field.

Code

function color_field_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) {
  foreach ($items as $delta => $item) {

    // Test required color fields.
    if ($instance['required'] && empty($item['rgb'])) {
      $errors[$field['field_name']][$langcode][$delta][] = array(
        'error' => 'color_required',
        'message' => t('The color for %field is required.', array(
          '%value' => trim($item['rgb']),
          '%field' => $instance['label'],
        )),
        'error_element' => array(
          'rgb' => TRUE,
          'opacity' => FALSE,
        ),
      );
    }

    // Test required opacity fields is opacity need to be recorded.
    if ($field['settings']['opacity'] && $instance['required'] && empty($item['opacity'])) {
      $errors[$field['field_name']][$langcode][$delta][] = array(
        'error' => 'color_required',
        'message' => t('The opacity for %field is required.', array(
          '%value' => trim($item['rgb']),
          '%field' => $instance['label'],
        )),
        'error_element' => array(
          'rgb' => FALSE,
          'opacity' => TRUE,
        ),
      );
    }

    // Test rgb field format.
    $regexp = '@^#[0-9a-fA-F]{6}$@';
    if (!empty($item['rgb']) && !preg_match($regexp, $item['rgb'])) {
      $errors[$field['field_name']][$langcode][$delta][] = array(
        'error' => 'color_invalid',
        'message' => t('The value %value provided for %field is not a valid color.', array(
          '%value' => trim($item['rgb']),
          '%field' => $instance['label'],
        )),
        'error_element' => array(
          'rgb' => TRUE,
          'opacity' => FALSE,
        ),
      );
    }

    // Test opacity field.
    $regexp = '@^[0]?(\\.)(\\d)*$|^[01]$@';
    if (!empty($item['opacity']) && !preg_match($regexp, $item['opacity'])) {
      $errors[$field['field_name']][$langcode][$delta][] = array(
        'error' => 'opacity_invalid',
        'message' => t('The value %value provided for %field is not a valid opacity.', array(
          '%value' => trim($item['opacity']),
          '%field' => $instance['label'],
        )),
        'error_element' => array(
          'rgb' => FALSE,
          'opacity' => TRUE,
        ),
      );
    }
  }
}