Triggering events on create, update and delete actions on entities

git-svn-id: https://code.elgg.org/elgg/trunk@411 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 22 insertions, 9 deletions

diff --git a/engine/lib/entities.php b/engine/lib/entities.php
index 9d7f98079..169d87eb9 100644
--- a/engine/lib/entities.php
+++ b/engine/lib/entities.php
@@ -528,11 +528,14 @@
 		$owner_guid = (int)$owner_guid;
 		$access_id = (int)$access_id;
 		$time = time();
+		

+		$entity = get_entity($guid);

 		
-		$access = get_access_list();
-		
-		
-		return update_data("UPDATE {$CONFIG->dbprefix}entities set owner_guid='$owner_guid', access_id='$access_id', time_updated='$time' WHERE guid=$guid and (access_id in {$access} or (access_id = 0 and owner_guid = {$_SESSION['id']}))");
+		if ($entity->canEdit()) {

+			if (trigger_event('update',$entity->type,$entity)) {
+				return update_data("UPDATE {$CONFIG->dbprefix}entities set owner_guid='$owner_guid', access_id='$access_id', time_updated='$time' WHERE guid=$guid and (access_id in {$access} or (access_id = 0 and owner_guid = {$_SESSION['id']}))");

+			}

+		}
 	}
 	
 	/**
@@ -559,7 +562,11 @@
 		// Erased by Ben: sometimes we need unauthenticated users to create things! (eg users on registration)
 		// if ($owner_guid==0) throw new InvalidParameterException("owner_guid must not be 0");
 	
-		return insert_data("INSERT into {$CONFIG->dbprefix}entities (type, subtype, owner_guid, access_id, time_created, time_updated) values ('$type',$subtype, $owner_guid, $access_id, $time, $time)");
+		if ($result = insert_data("INSERT into {$CONFIG->dbprefix}entities (type, subtype, owner_guid, access_id, time_created, time_updated) values ('$type',$subtype, $owner_guid, $access_id, $time, $time)")) {

+			$entity = get_entity($result);

+			trigger_event('create',$entity->type,$entity);

+		}

+		return $result;
 	}
 	
 	/**
@@ -681,10 +688,16 @@
 		// TODO Make sure this deletes all metadata/annotations/relationships/etc!!

 		
 		$guid = (int)$guid;
-		$entity = get_entity($guid);
-		

-		if ($entity->canEdit())
-			return delete_data("DELETE from {$CONFIG->dbprefix}entities where where guid=$guid"); 
+		if ($entity = get_entity($guid)) {

+			if (trigger_event('delete',$entity->type,$entity)) {

+				if ($entity->canEdit()) {

+					$entity->clearMetadata();

+					$entity->clearAnnotations();
+					return delete_data("DELETE from {$CONFIG->dbprefix}entities where where guid={$guid}");

+				} 

+			}

+		}

+		return false;
 		
 	}