Fixed user GUID and multiple metadata bugs

git-svn-id: https://code.elgg.org/elgg/trunk@510 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 28 insertions, 2 deletions

diff --git a/engine/lib/metadata.php b/engine/lib/metadata.php
index aba7e782d..06c187a70 100644
--- a/engine/lib/metadata.php
+++ b/engine/lib/metadata.php
@@ -138,6 +138,27 @@
 				
 		return row_to_elggmetadata(get_data_row("SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}metadata m JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where m.id=$id and (m.access_id in {$access} or (m.access_id = 0 and m.owner_guid = {$_SESSION['id']}))"));
 	}
+	

+	/**

+	 * Removes metadata on an entity with a particular name

+	 *

+	 * @param int $entity_guid The entity GUID

+	 * @param string $name The name of the entity

+	 * @return true|false Depending on success

+	 */

+	function remove_metadata($entity_guid, $name) {

+		

+		global $CONFIG;

+		$entity_guid = (int) $entity_guid;

+		$name = sanitise_string(trim($name));

+		if ($existing = get_data("SELECT * from {$CONFIG->dbprefix}metadata WHERE entity_guid = $entity_guid and name_id=" . add_metastring($name))) {

+			foreach($existing as $ex)

+				delete_metadata($ex->id);

+			return true;

+		}

+		return false;

+		

+	}

 	
 	/**
 	 * Create a new metadata object, or update an existing one.
@@ -169,14 +190,14 @@
 		$id = false;
 	
 		$existing = get_data_row("SELECT * from {$CONFIG->dbprefix}metadata WHERE entity_guid = $entity_guid and name_id=" . add_metastring($name) . " limit 1");
-		if (($existing) && (!$allow_multiple)) 
+		if (($existing) && (!$allow_multiple) && (!empty($value))) 
 		{
 			$id = $existing->id;
 			$result = update_metadata($id, $name, $value, $value_type, $owner_guid, $access_id);
 			
 			if (!$result) return false;
 		}
-		else
+		else if (!empty($value))
 		{
 			// Add the metastrings
 			$value = add_metastring($value);
@@ -187,6 +208,11 @@
 			
 			// If ok then add it
 			$id = insert_data("INSERT into {$CONFIG->dbprefix}metadata (entity_guid, name_id, value_id, value_type, owner_guid, time_created, access_id) VALUES ($entity_guid, '$name','$value','$value_type', $owner_guid, $time, $access_id)");
+		} else if ($existing) {

+			

+			$id = $existing->id;

+			delete_metadata($id);

+			

 		}
 		
 		return $id;