function ds_preprocess_field_form_validate in Display Suite 6.3

Same name and namespace in other branches

1. 6 includes/ds.fields.inc \ds_preprocess_field_form_validate()
2. 6.2 includes/ds.fields.inc \ds_preprocess_field_form_validate()
3. 7.2 modules/ds_ui/includes/ds.fields.inc \ds_preprocess_field_form_validate()
4. 7 ds.fields.inc \ds_preprocess_field_form_validate()

Validate preprocess field submission, only on insert.

File

includes/ds.fields.inc, line 445

Manage fields.

Code

function ds_preprocess_field_form_validate($form, &$form_state) {
  if ($form['#form_type'] == 'insert') {
    $module = $form['#module'];
    $fields = $form['#all_fields'];
    $existing = array_keys($fields);
    if (in_array($form_state['values']['preprocess_key'], $existing)) {
      form_set_error('preprocess_key', t('This field already exists.'));
    }
    if (!preg_match('!^[a-z_0-9]+$!', $form_state['values']['preprocess_key'])) {
      form_set_error('preprocess_key', t('The machine-readable name must contain only lowercase letters, numbers and underscores.'));
    }
  }
}