function values_field_form_alter in Values 7

Implements hook_form_alter().

File

modules/values_field/values_field.module, line 11

Use reusable value sets as allowed values for fields.

Code

function values_field_form_alter(&$form, &$form_state, $form_id) {

  // On the field settings form or the full field edit form...
  if ($form_id == 'field_ui_field_settings_form' || $form_id == 'field_ui_field_edit_form') {

    // Our field instance (on new fields, #field is not always there so we
    // load using field_info_field instead)
    $field = isset($form['#field']) ? $form['#field'] : field_info_field($form['field']['field_name']['#value']);

    // Make sure that we're on a "list" field
    if ($field['module'] == 'list') {

      // Our options for the value set select list
      $options = array(
        '' => t('- None -'),
      );

      // Go through the value sets
      foreach (values_load_all() as $value_set) {

        // Enforce numeric value sets for numeric fields
        $numeric = TRUE;
        if ($field['type'] == 'list_integer' || $field['type'] == 'list_float') {
          if (is_array($value_set->data)) {
            foreach ($value_set->data as $value) {
              if (!is_numeric($value['value'])) {
                $numeric = FALSE;
              }
            }
          }
          if ($numeric) {
            $options[$value_set->name] = $value_set->title;
          }
        }
        else {

          // All other fields will be assumed string values
          $options[$value_set->name] = $value_set->title;
        }
      }

      // Custom validate handler to process values_field input
      $form['#validate'][] = 'values_field_field_settings_form_validate';

      // Our values_field select list to choose a value set for allowed values
      $form['field']['settings']['values_field'] = array(
        '#type' => 'select',
        '#title' => t('Value sets'),
        '#description' => t('Select a reusable value set to use as allowed values for this field. Configure value sets !here. If this field is filled out, the values returned by this set will override the allowed values list below.', array(
          '!here' => l('here', 'admin/content/values'),
        )),
        '#options' => $options,
        '#default_value' => !empty($field['settings']['values_field']) ? $field['settings']['values_field'] : '',
        '#weight' => -10,
      );

      // Add a state for the allowed values field
      $form['field']['settings']['allowed_values']['#states']['visible'][':input[name="field[settings][values_field]"]'] = array(
        'value' => '',
      );

      // If CCK Is enabled we'll need to add some special states to hide the
      // Allowed values php code and allowed values function fields once
      // a value set is chosen.
      if (module_exists('cck')) {
        $form['field']['settings']['allowed_values_php']['#states']['visible'][':input[name="field[settings][values_field]"]'] = array(
          'value' => '',
        );
        $form['field']['settings']['allowed_values_function']['#states']['visible'][':input[name="field[settings][values_field]"]'] = array(
          'value' => '',
        );
        $form['instance']['default_value_widget']['default_value_function']['#states']['visible'][':input[name="field[settings][values_field]"]'] = array(
          'value' => '',
        );
        $form['instance']['default_value_widget']['default_value_php']['#states']['visible'][':input[name="field[settings][values_field]"]'] = array(
          'value' => '',
        );
      }
      return $form;
    }
  }
}