[-] BO : Attributes can now be deleted in Catalogue : Attributes and Groups

classes/AdminController.php

@@ -717,8 +717,9 @@ class AdminControllerCore extends Controller
 		$this->_errors = array_unique($this->_errors);
 		if (count($this->_errors) > 0)
 			return;
-
-		return $object;
+		if (isset($object))
+			return $object;
+		return;
 	}
 
 	/**

classes/Attribute.php

@@ -320,9 +320,9 @@ class AttributeCore extends ObjectModel
 
 		// when delete, you must use $use_last_attribute
 		if ($use_last_attribute)
-			$sql .= 'AND `id_attribute` != '.(int)$this->id;
+			$sql .= ' AND `id_attribute` != '.(int)$this->id;
 
-		$sql .= 'ORDER BY `position`';
+		$sql .= ' ORDER BY `position`';
 
 		$result = Db::getInstance()->executeS($sql);