function _content_field_overview_form_validate_add_new in Content Construction Kit (CCK) 6.2

Same name and namespace in other branches

1. 6.3 includes/content.admin.inc \_content_field_overview_form_validate_add_new()

Helper function for content_field_overview_form_validate.

Validate the 'add new field' row.

1 call to _content_field_overview_form_validate_add_new()

content_field_overview_form_validate in includes/content.admin.inc

File

includes/content.admin.inc, line 379

Administrative interface for content type creation.

Code

function _content_field_overview_form_validate_add_new($form, &$form_state) {
  $field = $form_state['values']['_add_new_field'];

  // Validate if any information was provided in the 'add new field' row.
  if (array_filter(array(
    $field['label'],
    $field['field_name'],
    $field['type'],
    $field['widget_type'],
  ))) {

    // No label.
    if (!$field['label']) {
      form_set_error('_add_new_field][label', t('Add new field: you need to provide a label.'));
    }

    // No field name.
    if (!$field['field_name']) {
      form_set_error('_add_new_field][field_name', t('Add new field: you need to provide a field name.'));
    }
    else {
      $field_name = $field['field_name'];

      // Add the 'field_' prefix.
      if (substr($field_name, 0, 6) != 'field_') {
        $field_name = 'field_' . $field_name;
        form_set_value($form['_add_new_field']['field_name'], $field_name, $form_state);
      }

      // Invalid field name.
      if (!preg_match('!^field_[a-z0-9_]+$!', $field_name)) {
        form_set_error('_add_new_field][field_name', t('Add new field: the field name %field_name is invalid. The name must include only lowercase unaccentuated letters, numbers, and underscores.', array(
          '%field_name' => $field_name,
        )));
      }
      if (strlen($field_name) > 32) {
        form_set_error('_add_new_field][field_name', t('Add new field: the field name %field_name is too long. The name is limited to 32 characters, including the \'field_\' prefix.', array(
          '%field_name' => $field_name,
        )));
      }

      // A field named 'field_instance' would cause a tablename clash with {content_field_instance}
      if ($field_name == 'field_instance') {
        form_set_error('_add_new_field][field_name', t("Add new field: the name 'field_instance' is a reserved name."));
      }

      // Field name already exists.
      // We need to check inactive fields as well, so we can't use content_fields().
      module_load_include('inc', 'content', 'includes/content.crud');
      $fields = content_field_instance_read(array(), TRUE);
      $used = FALSE;
      foreach ($fields as $existing_field) {
        $used |= $existing_field['field_name'] == $field_name;
      }
      if ($used) {
        form_set_error('_add_new_field][field_name', t('Add new field: the field name %field_name already exists.', array(
          '%field_name' => $field_name,
        )));
      }
    }

    // No field type.
    if (!$field['type']) {
      form_set_error('_add_new_field][type', t('Add new field: you need to select a field type.'));
    }

    // No widget type.
    if (!$field['widget_type']) {
      form_set_error('_add_new_field][widget_type', t('Add new field: you need to select a widget.'));
    }
    elseif ($field['type']) {
      $widget_types = content_widget_type_options($field['type']);
      if (!isset($widget_types[$field['widget_type']])) {
        form_set_error('_add_new_field][widget_type', t('Add new field: invalid widget.'));
      }
    }
  }
}