====== Fallback Record Loaders ======

:!: This feature was introduced in VuFind 5.1.

This very specialized feature is used by VuFind's record loader. When records fail to load in the normal way, fallback loaders can be run to try to retrieve records by other means. For example, a Summon-specific loader is provided which can use bookmark information stored in VuFind's database to relocate records after their IDs have changed, and a Solr-specific loader is included which can use a field specified in searches.ini to detect old IDs and remap accordingly.

===== Key Plugin Details =====

**Default Namespace:** \VuFind\Record\FallbackLoader

**Interface:** [[https://github.com/vufind-org/vufind/blob/dev/module/VuFind/src/VuFind/Record/FallbackLoader/FallbackLoaderInterface.php|\VuFind\Record\FallbackLoader\FallbackLoaderInterface]]

**Service Locator Configuration Section in module.config.php:** ['vufind']['plugin_managers']['record_fallbackloader']

**Service Manager Name for Service Locator:** VuFind\Record\FallbackLoader\PluginManager

See the [[development:plugins:general_information|General Plugin Information]] page for more details on VuFind plugins.