field_entity.module in Field entity 7

Field and Field Instance entity definitions.

File

field_entity.module

<?php

/**
 * @file
 * Field and Field Instance entity definitions.
 */

/**
 * Implements hook_entity_info().
 */
function field_entity_entity_info() {
  $items = array();
  $items['field_entity'] = array(
    'label' => t('Field'),
    'plural label' => t('Fields'),
    'base table' => 'field_config',
    'fieldable' => FALSE,
    'entity keys' => array(
      'id' => 'id',
      'label' => 'field_name',
    ),
    'module' => 'field_entity',
    'access callback' => 'field_entity_field_entity_access',
  );
  $items['field_instance_entity'] = array(
    'label' => t('Field instance'),
    'plural label' => t('Field instances'),
    'controller class' => 'FieldInstanceEntityController',
    'base table' => 'field_config_instance',
    'label callback' => 'field_entity_field_instance_entity_label',
    'fieldable' => FALSE,
    'entity keys' => array(
      'id' => 'id',
      'bundle' => 'entity_type_bundle',
    ),
    'module' => 'field_entity',
    'access callback' => 'field_entity_field_instance_entity_access',
    'bundles' => array(),
  );
  $entity_bundles = array();
  foreach (field_info_field_map() as $field_name => $info) {
    foreach ($info['bundles'] as $entity_type => $bundles) {
      foreach ($bundles as $bundle) {
        $key = $entity_type . ':' . $bundle;
        if (!isset($entity_bundles[$key])) {
          $entity_bundles[$key] = $key;
        }
      }
    }
  }
  foreach ($entity_bundles as $type => $name) {
    $items['field_instance_entity']['bundles'][$type] = array(
      'label' => $name,
    );
  }
  return $items;
}

/**
 * Implements hook_entity_query_alter().
 */
function field_entity_entity_query_alter($query) {
  $conditions =& $query->entityConditions;
  if (isset($conditions['entity_type']) && $conditions['entity_type']['value'] == 'field_instance_entity' && isset($conditions['bundle'])) {
    $entity_type_bundle = $conditions['bundle']['value'];
    if (is_array($entity_type_bundle)) {

      // Single bundle condition is supported only.
      // @todo Support multiple bundles.
      $entity_type_bundle = reset($entity_type_bundle);
      if ($entity_type_bundle) {
        list($entity_type, $bundle) = explode(':', $entity_type_bundle, 2);
        $query
          ->propertyCondition('entity_type', $entity_type, '=');
        $query
          ->propertyCondition('bundle', $bundle, '=');
      }
    }
    unset($conditions['bundle']);
  }
}

/**
 * Entity access callback for field entity.
 */
function field_entity_field_entity_access($op, $entity, $account = NULL, $entity_type = 'field_entity') {
  return $op === 'view';
}

/**
 * Entity access callback for field instance entity.
 */
function field_entity_field_instance_entity_access($op, $entity, $account = NULL, $entity_type = 'field_instance_entity') {
  return $op === 'view';
}

/**
 * Entity label callback for field instance entity.
 */
function field_entity_field_instance_entity_label($entity, $entity_type) {
  $instance = field_info_instance($entity->entity_type, $entity->field_name, $entity->bundle);
  return isset($instance['label']) ? $instance['label'] . ' (' . $entity->field_name . ')' : $entity->field_name;
}

/**
 * Class FieldInstanceEntityController.
 */
class FieldInstanceEntityController extends DrupalDefaultEntityController {
  protected function buildQuery($ids, $conditions = array(), $revision_id = FALSE) {
    $bundle_values = array();
    if ($conditions) {
      foreach ($conditions as $field => $value) {
        if ($field === 'entity_type_bundle') {
          $bundle_values[] = $value;
        }
      }
      unset($conditions['entity_type_bundle']);
    }
    $query = parent::buildQuery($ids, $conditions, $revision_id);
    foreach ($bundle_values as $value) {
      list($entity_type, $bundle) = explode(':', $value, 2);
      $query
        ->condition('base.entity_type', $entity_type, '=');
      $query
        ->condition('base.bundle', $bundle, '=');
    }
    $query
      ->addExpression("CONCAT(CONCAT(base.entity_type, ':'), base.bundle)", 'entity_type_bundle');
    return $query;
  }

}

Functions

Name	Description
field_entity_entity_info	Implements hook_entity_info().
field_entity_entity_query_alter	Implements hook_entity_query_alter().
field_entity_field_entity_access	Entity access callback for field entity.
field_entity_field_instance_entity_access	Entity access callback for field instance entity.
field_entity_field_instance_entity_label	Entity label callback for field instance entity.

Classes

Name	Description
FieldInstanceEntityController	Class FieldInstanceEntityController.