danielebarchiesi@4: <?php
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Implements hook_uninstall().
danielebarchiesi@4:  */
danielebarchiesi@4: function entityreference_uninstall() {
danielebarchiesi@4:   variable_del('entityreference:base-tables');
danielebarchiesi@4: }
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Implements hook_field_schema().
danielebarchiesi@4:  */
danielebarchiesi@4: function entityreference_field_schema($field) {
danielebarchiesi@4:   if ($field['type'] == 'entityreference') {
danielebarchiesi@4:     // Load the base table configuration from the cache.
danielebarchiesi@4:     $base_tables = variable_get('entityreference:base-tables', array());
danielebarchiesi@4: 
danielebarchiesi@4:     $schema = array(
danielebarchiesi@4:       'columns' => array(
danielebarchiesi@4:         'target_id' => array(
danielebarchiesi@4:           'description' => 'The id of the target entity.',
danielebarchiesi@4:           'type' => 'int',
danielebarchiesi@4:           'unsigned' => TRUE,
danielebarchiesi@4:           'not null' => TRUE,
danielebarchiesi@4:         ),
danielebarchiesi@4:       ),
danielebarchiesi@4:       'indexes' => array(
danielebarchiesi@4:         'target_id' => array('target_id'),
danielebarchiesi@4:       ),
danielebarchiesi@4:       'foreign keys' => array(),
danielebarchiesi@4:     );
danielebarchiesi@4: 
danielebarchiesi@4:     // Create a foreign key to the target entity type base type, if available.
danielebarchiesi@4:     $entity_type = $field['settings']['target_type'];
danielebarchiesi@4:     if (isset($base_tables[$entity_type])) {
danielebarchiesi@4:       list($base_table, $id_column) = $base_tables[$entity_type];
danielebarchiesi@4:       $schema['foreign keys'][$base_table] = array(
danielebarchiesi@4:         'table' => $base_table,
danielebarchiesi@4:         'columns' => array('target_id' => $id_column),
danielebarchiesi@4:       );
danielebarchiesi@4:     }
danielebarchiesi@4: 
danielebarchiesi@4:     // Invoke the behaviors to allow them to change the schema.
danielebarchiesi@4:     foreach (entityreference_get_behavior_handlers($field) as $handler) {
danielebarchiesi@4:       $handler->schema_alter($schema, $field);
danielebarchiesi@4:     }
danielebarchiesi@4: 
danielebarchiesi@4:     return $schema;
danielebarchiesi@4:   }
danielebarchiesi@4: }
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Update the field configuration to the new plugin structure.
danielebarchiesi@4:  */
danielebarchiesi@4: function entityreference_update_7000() {
danielebarchiesi@4:   // Enable ctools.
danielebarchiesi@4:   if (!module_enable(array('ctools'))) {
danielebarchiesi@4:     throw new DrupalUpdateException('This version of Entity Reference requires ctools, but it could not be enabled.');
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   // Get the list of fields of type 'entityreference'.
danielebarchiesi@4:   $fields = array();
danielebarchiesi@4:   foreach (field_info_fields() as $field_name => $field) {
danielebarchiesi@4:     // Update the field configuration.
danielebarchiesi@4:     if ($field['type'] == 'entityreference') {
danielebarchiesi@4:       $settings = &$field['settings'];
danielebarchiesi@4:       if (!isset($settings['handler'])) {
danielebarchiesi@4:         $settings['handler'] = 'base';
danielebarchiesi@4:         $settings['handler_settings']['target_bundles'] = $settings['target_bundles'];
danielebarchiesi@4:         unset($settings['target_bundles']);
danielebarchiesi@4:         field_update_field($field);
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4: 
danielebarchiesi@4:     // Update the instance configurations.
danielebarchiesi@4:     foreach ($field['bundles'] as $entity_type => $bundles) {
danielebarchiesi@4:       foreach ($bundles as $bundle) {
danielebarchiesi@4:         $instance = field_info_instance($entity_type, $field_name, $bundle);
danielebarchiesi@4:         $save = FALSE;
danielebarchiesi@4:         if ($instance['widget']['type'] == 'entityreference_autocomplete') {
danielebarchiesi@4:           $instance['widget']['type'] = 'entityreference_autocomplete_tags';
danielebarchiesi@4:           $save = TRUE;
danielebarchiesi@4:         }
danielebarchiesi@4:         // When the autocomplete path is the default value, remove it from
danielebarchiesi@4:         // the configuration.
danielebarchiesi@4:         if (isset($instance['widget']['settings']['path']) && $instance['widget']['settings']['path'] == 'entityreference/autocomplete') {
danielebarchiesi@4:           unset($instance['widget']['settings']['path']);
danielebarchiesi@4:           $save = TRUE;
danielebarchiesi@4:         }
danielebarchiesi@4:         if ($save) {
danielebarchiesi@4:           field_update_instance($instance);
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4: }
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Drop "target_type" from the field schema.
danielebarchiesi@4:  */
danielebarchiesi@4: function entityreference_update_7001() {
danielebarchiesi@4:   if (!module_exists('field_sql_storage')) {
danielebarchiesi@4:     return;
danielebarchiesi@4:   }
danielebarchiesi@4:   foreach (field_info_fields() as $field_name => $field) {
danielebarchiesi@4:     if ($field['type'] != 'entityreference') {
danielebarchiesi@4:       // Not an entity reference field.
danielebarchiesi@4:       continue;
danielebarchiesi@4:     }
danielebarchiesi@4: 
danielebarchiesi@4:     // Update the field settings.
danielebarchiesi@4:     $field = field_info_field($field_name);
danielebarchiesi@4:     unset($field['indexes']['target_entity']);
danielebarchiesi@4:     $field['indexes']['target_id'] = array('target_id');
danielebarchiesi@4:     field_update_field($field);
danielebarchiesi@4: 
danielebarchiesi@4:     if ($field['storage']['type'] !== 'field_sql_storage') {
danielebarchiesi@4:       // Field doesn't use SQL storage, we cannot modify the schema.
danielebarchiesi@4:       continue;
danielebarchiesi@4:     }
danielebarchiesi@4:     $table_name = _field_sql_storage_tablename($field);
danielebarchiesi@4:     $revision_name = _field_sql_storage_revision_tablename($field);
danielebarchiesi@4: 
danielebarchiesi@4:     db_drop_index($table_name, $field_name . '_target_entity');
danielebarchiesi@4:     db_drop_index($table_name, $field_name . '_target_id');
danielebarchiesi@4:     db_drop_field($table_name, $field_name . '_target_type');
danielebarchiesi@4:     db_add_index($table_name, $field_name . '_target_id', array($field_name . '_target_id'));
danielebarchiesi@4: 
danielebarchiesi@4:     db_drop_index($revision_name, $field_name . '_target_entity');
danielebarchiesi@4:     db_drop_index($revision_name, $field_name . '_target_id');
danielebarchiesi@4:     db_drop_field($revision_name, $field_name . '_target_type');
danielebarchiesi@4:     db_add_index($revision_name, $field_name . '_target_id', array($field_name . '_target_id'));
danielebarchiesi@4:   }
danielebarchiesi@4: }
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Make the target_id column NOT NULL.
danielebarchiesi@4:  */
danielebarchiesi@4: function entityreference_update_7002() {
danielebarchiesi@4:   if (!module_exists('field_sql_storage')) {
danielebarchiesi@4:     return;
danielebarchiesi@4:   }
danielebarchiesi@4:   foreach (field_info_fields() as $field_name => $field) {
danielebarchiesi@4:     if ($field['type'] != 'entityreference') {
danielebarchiesi@4:       // Not an entity reference field.
danielebarchiesi@4:       continue;
danielebarchiesi@4:     }
danielebarchiesi@4: 
danielebarchiesi@4:     if ($field['storage']['type'] !== 'field_sql_storage') {
danielebarchiesi@4:       // Field doesn't use SQL storage, we cannot modify the schema.
danielebarchiesi@4:       continue;
danielebarchiesi@4:     }
danielebarchiesi@4: 
danielebarchiesi@4:     $table_name = _field_sql_storage_tablename($field);
danielebarchiesi@4:     $revision_name = _field_sql_storage_revision_tablename($field);
danielebarchiesi@4: 
danielebarchiesi@4:     db_change_field($table_name, $field_name . '_target_id', $field_name . '_target_id', array(
danielebarchiesi@4:       'description' => 'The id of the target entity.',
danielebarchiesi@4:       'type' => 'int',
danielebarchiesi@4:       'unsigned' => TRUE,
danielebarchiesi@4:       'not null' => TRUE,
danielebarchiesi@4:     ));
danielebarchiesi@4:   }
danielebarchiesi@4: }