Club Drupal

<?php

/**

 * Implements hook_uninstall().

 */

function entityreference_uninstall() {

  variable_del('entityreference:base-tables');

}

/**

 * Implements hook_field_schema().

 */

function entityreference_field_schema($field) {

  if ($field['type'] == 'entityreference') {

    // Load the base table configuration from the cache.

    $base_tables = variable_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.

    foreach (entityreference_get_behavior_handlers($field) as $handler) {

      $handler->schema_alter($schema, $field);

    }

    return $schema;

  }

}

/**

 * Update the field configuration to the new plugin structure.

 */

function entityreference_update_7000() {

  // Enable ctools.

  if (!module_enable(array('ctools'))) {

    throw new DrupalUpdateException('This version of Entity Reference requires ctools, but it could not be enabled.');

  }

  // Get the list of fields of type 'entityreference'.

  $fields = array();

  foreach (field_info_fields() as $field_name => $field) {

    // Update the field configuration.

    if ($field['type'] == 'entityreference') {

      $settings = &$field['settings'];

      if (!isset($settings['handler'])) {

        $settings['handler'] = 'base';

        $settings['handler_settings']['target_bundles'] = $settings['target_bundles'];

        unset($settings['target_bundles']);

        field_update_field($field);

      }

    }

    // Update the instance configurations.

    foreach ($field['bundles'] as $entity_type => $bundles) {

      foreach ($bundles as $bundle) {

        $instance = field_info_instance($entity_type, $field_name, $bundle);

        $save = FALSE;

        if ($instance['widget']['type'] == 'entityreference_autocomplete') {

          $instance['widget']['type'] = 'entityreference_autocomplete_tags';

          $save = TRUE;

        }

        // When the autocomplete path is the default value, remove it from

        // the configuration.

        if (isset($instance['widget']['settings']['path']) && $instance['widget']['settings']['path'] == 'entityreference/autocomplete') {

          unset($instance['widget']['settings']['path']);

          $save = TRUE;

        }

        if ($save) {

          field_update_instance($instance);

        }

      }

    }

  }

}

/**

 * Drop "target_type" from the field schema.

 */

function entityreference_update_7001() {

  if (!module_exists('field_sql_storage')) {

    return;

  }

  foreach (field_info_fields() as $field_name => $field) {

    if ($field['type'] != 'entityreference') {

      // Not an entity reference field.

      continue;

    }

    // Update the field settings.

    $field = field_info_field($field_name);

    unset($field['indexes']['target_entity']);

    $field['indexes']['target_id'] = array('target_id');

    field_update_field($field);

    if ($field['storage']['type'] !== 'field_sql_storage') {

      // Field doesn't use SQL storage, we cannot modify the schema.

      continue;

    }

    $table_name = _field_sql_storage_tablename($field);

    $revision_name = _field_sql_storage_revision_tablename($field);

    db_drop_index($table_name, $field_name . '_target_entity');

    db_drop_index($table_name, $field_name . '_target_id');

    db_drop_field($table_name, $field_name . '_target_type');

    db_add_index($table_name, $field_name . '_target_id', array($field_name . '_target_id'));

    db_drop_index($revision_name, $field_name . '_target_entity');

    db_drop_index($revision_name, $field_name . '_target_id');

    db_drop_field($revision_name, $field_name . '_target_type');

    db_add_index($revision_name, $field_name . '_target_id', array($field_name . '_target_id'));

  }

}

/**

 * Make the target_id column NOT NULL.

 */

function entityreference_update_7002() {

  if (!module_exists('field_sql_storage')) {

    return;

  }

  foreach (field_info_fields() as $field_name => $field) {

    if ($field['type'] != 'entityreference') {

      // Not an entity reference field.

      continue;

    }

    if ($field['storage']['type'] !== 'field_sql_storage') {

      // Field doesn't use SQL storage, we cannot modify the schema.

      continue;

    }

    $table_name = _field_sql_storage_tablename($field);

    $revision_name = _field_sql_storage_revision_tablename($field);

    db_change_field($table_name, $field_name . '_target_id', $field_name . '_target_id', array(

      'description' => 'The id of the target entity.',

      'type' => 'int',

      'unsigned' => TRUE,

      'not null' => TRUE,

    ));

  }

}