ddf_entityreference.module in Dynamic dependent fields 7

File

modules/ddf_entityreference/ddf_entityreference.module

<?php

/**
 * Implements hook_ctools_plugin_directory().
 */
function ddf_entityreference_ctools_plugin_directory($module, $plugin) {
  if ($module == 'entityreference') {
    return 'plugins/' . $plugin;
  }
  return NULL;
}

/**
 * Implements hook_ddf_update_widget().
 */
function ddf_entityreference_ddf_update_widget($dependent_field, $parameters, $selector, $entity, $settings, $controlling_field_name, $entity_type, $bundle) {
  if ($dependent_field['type'] != 'entityreference') {
    return NULL;
  }
  EntityReference_SelectionHandler_DDF::storeControllingFieldValues($parameters, $entity_type, $entity);
  $field = field_info_field($dependent_field['field_name']);
  $instance = field_info_instance($entity_type, $dependent_field['field_name'], $bundle);
  if ($instance['widget']['type'] != 'options_select') {
    return NULL;
  }
  $form = array();
  $form_state = array();
  $element = array(
    '#entity_type' => $entity_type,
    '#entity' => $entity,
    '#required' => $instance['required'],
  );
  $element = options_field_widget_form($form, $form_state, $dependent_field, $instance, LANGUAGE_NONE, array(), 0, $element);
  $default_items = field_get_default_value($entity_type, $entity, $field, $instance, LANGUAGE_NONE);
  $context = array(
    'form' => $form,
    'field' => $field,
    'instance' => $instance,
    'langcode' => LANGUAGE_NONE,
    'items' => $default_items,
    'delta' => 0,
  );
  drupal_alter(array(
    'field_widget_form',
    'field_widget_' . $instance['widget']['type'] . '_form',
  ), $element, $form_state, $context);
  $result = '';
  if (isset($element['#options'])) {
    if (!empty($element['#properties'])) {
      $position = NULL;
      if (isset($element['#properties']['empty_option']) && $element['#properties']['empty_option'] == 'option_select') {
        if (count($element['#options']) == 2) {
          $position = 1;
        }
      }
      elseif (!isset($element['#properties']['empty_option'])) {
        if (count($element['#options']) == 1) {
          $position = 0;
        }
      }
      if (!is_null($position)) {
        $keys = array_keys($element['#options']);
        if (isset($keys[$position])) {
          $element['#value'] = $keys[$position];
        }
      }
    }
    $result = form_select_options($element);
  }
  $commands = array();
  $command = ajax_command_html($selector, $result);
  $command['command'] = 'ddf_insertnowrap';
  $commands[] = $command;

  // If chosen is applied, it can't be updated by attachBehavior().
  $commands[] = ajax_command_invoke($selector, 'trigger', array(
    'liszt:updated',
  ));
  $commands[] = ajax_command_invoke($selector, 'trigger', array(
    'chosen:updated',
  ));

  // Options are changed, so run 'change' handlers.
  $commands[] = ajax_command_invoke($selector, 'trigger', array(
    'change',
  ));
  return $commands;
}

/**
 * Implements hook_field_update_field().
 */
function ddf_entityreference_field_update_field($field, $prior_field, $has_data) {
  if ($field['type'] != 'entityreference') {
    return;
  }

  // We need 'bundles' element of the field structure.
  $field = field_info_field($field['field_name']);

  // Remove old dependencies.
  foreach ($field['bundles'] as $entity_type => $bundles) {
    foreach ($bundles as $bundle) {
      ddf_remove_dependency($field['field_name'], $entity_type, $bundle);
    }
  }

  // Add new dependencies.
  if (isset($field['settings']['handler_settings']['view']['args'])) {
    $controlling_fields = array();
    foreach ($field['settings']['handler_settings']['view']['args'] as $arg) {
      $matches = array();
      if (preg_match('/^\\{([^{}]+)\\}$/', $arg, $matches)) {
        $field_name = $matches[1];
        if (!empty($controlling_fields[$field_name])) {

          // Do not try to re-add the same dependency.
          continue;
        }
        $controlling_fields[$field_name] = TRUE;
        foreach ($field['bundles'] as $entity_type => $bundles) {
          foreach ($bundles as $bundle) {
            if (field_info_instance($entity_type, $field_name, $bundle)) {
              ddf_add_dependency($field_name, $field['field_name'], $entity_type, $bundle, array(
                'type' => 'options',
              ));
            }
          }
        }
      }
    }
  }
}

Functions

Name	Description
ddf_entityreference_ctools_plugin_directory	Implements hook_ctools_plugin_directory().
ddf_entityreference_ddf_update_widget	Implements hook_ddf_update_widget().
ddf_entityreference_field_update_field	Implements hook_field_update_field().