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function hook_field_storage_purge_field_instance in Drupal 7

Remove field storage information when a field instance is purged.

Called from field_purge_instance() to allow the field storage module to remove field instance information when a field instance is being purged.

Parameters

$instance: The instance being purged.

Related topics

Field CRUD API: Create, update, and delete Field API fields, bundles, and instances.
Field Storage API: Implement a storage engine for Field API data.
Hooks: Allow modules to interact with the Drupal core.

File

modules/field/field.api.php, line 2687: Hooks provided by the Field module.

Code

function hook_field_storage_purge_field_instance($instance) {
  db_delete('my_module_field_instance_info')
    ->condition('id', $instance['id'])
    ->execute();
}