entityreference.install

<?php

/**
 * Implements hook_field_schema().
 */
function entityreference_field_schema($field) {
  if ($field['type'] == 'entityreference') {
    // Load the base table configuration from the cache.
    $base_tables = state_get('entityreference_base_tables', array());

    $schema = array(
      'columns' => array(
        'target_id' => array(
          'description' => 'The id of the target entity.',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
      ),
      'indexes' => array(
        'target_id' => array('target_id'),
      ),
      'foreign keys' => array(),
    );

    // Create a foreign key to the target entity type base type, if available.
    $entity_type = $field['settings']['target_type'];
    if (isset($base_tables[$entity_type])) {
      list($base_table, $id_column) = $base_tables[$entity_type];
      $schema['foreign keys'][$base_table] = array(
        'table' => $base_table,
        'columns' => array('target_id' => $id_column),
      );
    }

    // Invoke the behaviors to allow them to change the schema.
    module_load_include('module', 'entityreference');
    foreach (entityreference_get_behavior_handlers($field) as $handler) {
      $handler->schema_alter($schema, $field);
    }

    return $schema;
  }
}

/**
 * Move entityreference settings from config to state.
 */
function entityreference_update_1000() {
  $config = config('entityreference.settings');
  $base_tables = $config->get('base-tables');
  state_set('entityreference_base_tables', $base_tables);
  $config->delete();

}

/**
 * Update each field base that references old plugin name "views-select-list" to
 * "views".
 */
function entityreference_update_1001() {
  foreach (field_info_fields() as $field_name => $field) {
    // Update the field configuration.
    if ($field['type'] == 'entityreference') {
      $settings = &$field['settings'];
      if (isset($settings['handler_settings']['behaviors']['views-select-list'])) {
        $settings['handler_settings']['behaviors']['views'] = $settings['handler_settings']['behaviors']['views-select-list'];
        unset($settings['handler_settings']['behaviors']['views-select-list']);
        field_update_field($field);
      }
    }
  }
}

/**
 * Updates each field instance that references old plugin name "taxonomy-index"
 * to "taxonomy".
 */
function entityreference_update_1002() {
  foreach (field_info_fields() as $field_name => $field) {
    // Update the field instance configuration.
    if ($field['type'] == 'entityreference') {
      foreach ($field['bundles'] as $entity_type => $bundles) {
        foreach ($bundles as $bundle) {
          $instance = field_info_instance($entity_type, $field_name, $bundle);
          if (isset($instance['settings']['behaviors']['taxonomy-index'])) {
            $instance['settings']['behaviors']['taxonomy'] = $instance['settings']['behaviors']['taxonomy-index'];
            unset($instance['settings']['behaviors']['taxonomy-index']);
            field_update_instance($instance);
          }
        }
      }
    }
  }
}