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-rw-r--r--engine/lib/metadata.php53
1 files changed, 52 insertions, 1 deletions
diff --git a/engine/lib/metadata.php b/engine/lib/metadata.php
index 4c2685296..4084d6959 100644
--- a/engine/lib/metadata.php
+++ b/engine/lib/metadata.php
@@ -766,6 +766,54 @@
return get_extender_url($extender);
}
return false;
+ }
+
+ /**
+ * Mark entities with a particular type and subtype as having access permissions
+ * that can be changed independently from their parent entity
+ *
+ * @param string $type The type - object, user, etc
+ * @param string $subtype The subtype; all subtypes by default
+ */
+ function register_metadata_as_independent($type, $subtype = '*') {
+ global $CONFIG;
+ if (!isset($CONFIG->independents)) $CONFIG->independents = array();
+ $CONFIG->independents[$type][$subtype] = true;
+ }
+
+ /**
+ * Determines whether entities of a given type and subtype should not change
+ * their metadata in line with their parent entity
+ *
+ * @param string $type The type - object, user, etc
+ * @param string $subtype The entity subtype
+ * @return true|false
+ */
+ function is_metadata_independent($type, $subtype) {
+ global $CONFIG;
+ if (empty($CONFIG->independents)) return false;
+ if (!empty($CONFIG->independents[$type][$subtype])
+ || !empty($CONFIG->independents[$type]['*'])) return true;
+ return false;
+ }
+
+ /**
+ * When an entity is updated, resets the access ID on all of its child metadata
+ *
+ * @param string $event The name of the event
+ * @param string $object_type The type of object
+ * @param ElggEntity $object The entity itself
+ */
+ function metadata_update($event, $object_type, $object) {
+ if ($object instanceof ElggEntity) {
+ if (!is_metadata_independent($object->getType(), $object->getSubtype())) {
+ global $CONFIG;
+ $access_id = (int) $object->access_id;
+ $guid = (int) $object->getGUID();
+ update_data("update {$CONFIG->dbprefix}metadata set access_id = {$access_id} where entity_guid = {$guid}");
+ }
+ }
+ return true;
}
/**
@@ -779,5 +827,8 @@
}
/** Register the hook */
- register_plugin_hook("export", "all", "export_metadata_plugin_hook", 2);
+ register_plugin_hook("export", "all", "export_metadata_plugin_hook", 2);
+ /** Call a function whenever an entity is updated **/
+ register_elgg_event_handler('update','all','metadata_update');
+
?> \ No newline at end of file