I have the following structure in my app:
MessageRecipients -> Message -> User
Message -> Activity
where the
You'll need to include those sub-sub-objects as well:
messageQuery.include('message');
messageQuery.include('message.user'); // if user is the column name
messageQuery.include('message.activity'); // if activity is the column name
You can also achieve this in one line:
messageQuery.include( ["message", "message.user", "message.activity"] );