public void RemoveUserRoom(ChatUser user, ChatRoom room)
{
RunNonLazy(() =>
{
// The hack from hell to attach the user to room.Users so delete is tracked
ObjectContext context = ((IObjectContextAdapter)_db).ObjectContext;
RelationshipManager manger = context.ObjectStateManager.GetRelationshipManager(room);
IRelatedEnd end = manger.GetRelatedEnd("JabbR.Models.ChatRoom_Users", "ChatRoom_Users_Target");
end.Attach(user);
room.Users.Remove(user);
});
}
public static void RemoveReferenceFromCollection(
this ObjectContext oc,
object target,
string propertyName,
object toBeRemoved)
{
EntityType entityType = oc.MetadataWorkspace.GetItem <EntityType>(
target.GetType().FullName,
DataSpace.CSpace);
NavigationProperty navProperty = entityType.NavigationProperties[propertyName];
ObjectStateEntry entry = oc.ObjectStateManager.GetObjectStateEntry(target);
IRelatedEnd relatedEnd = entry.RelationshipManager
.GetRelatedEnd(navProperty.RelationshipType.Name, navProperty.ToEndMember.Name);
relatedEnd.Attach(toBeRemoved);
relatedEnd.Remove(toBeRemoved);
}
