Implemented CanDelete method for lists and listitems

models/list_items.go

@@ -92,3 +92,10 @@ func GetListItemByID(listItemID int64) (listItem ListItem, err error) {
 
 	return
 }
+
+// CanDelete checks if the user can delete an item
+func (i *ListItem) CanDelete(doer *User) (bool) {
+	// A user can delete an item if he has write acces to its list
+	list, _ := GetListByID(i.ListID)
+	return list.CanWrite(doer)
+}