From 8cb52e47c1d0ea1009921c14d585b0194b532ec5 Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Thu, 22 Apr 2010 22:51:54 +0000
Subject: - Patch #777092 by jhodgdon, puregin: field purge hooks are not
 documented.

---
 modules/field/field.api.php | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'modules/field/field.api.php')

diff --git a/modules/field/field.api.php b/modules/field/field.api.php
index 95f436c43..da84eb23c 100644
--- a/modules/field/field.api.php
+++ b/modules/field/field.api.php
@@ -1637,6 +1637,42 @@ function hook_field_read_field($field) {
 function hook_field_read_instance($instance) {
 }
 
+/**
+ * Acts when a field record is being purged.
+ *
+ * In field_purge_field(), after the field configuration has been
+ * removed from the database, the field storage module has had a chance to
+ * run its hook_field_storage_purge_field(), and the field info cache
+ * has been cleared, this hook is invoked on all modules to allow them to
+ * respond to the field being purged.
+ *
+ * @param $field
+ *   The field being purged.
+ */
+function hook_field_purge_field($field) {
+  db_delete('my_module_field_info')
+    ->condition('id', $field['id'])
+    ->execute();
+}
+
+/**
+ * Acts when a field instance is being purged.
+ *
+ * In field_purge_instance(), after the field instance has been
+ * removed from the database, the field storage module has had a chance to
+ * run its hook_field_storage_purge_instance(), and the field info cache
+ * has been cleared, this hook is invoked on all modules to allow them to
+ * respond to the field instance being purged.
+ *
+ * @param $instance
+ *   The instance being purged.
+ */
+function hook_field_purge_field_instance($instance) {
+  db_delete('my_module_field_instance_info')
+    ->condition('id', $instance['id'])
+    ->execute();
+}
+
 /**
  * @} End of "ingroup field_crud"
  */
-- 
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