Question

I have Messages and User models with corresponding tables.
The Messages table has such fields like user_from and user_to.

How can associate the models to be able to access sender and recipient users objects:

message.user_from.name
message.user_to.id
...

Thanks.

Answer 1

The full solution for my case is:

  belongs_to :sender, 
    :class_name => "User", 
    :foreign_key => "sender_id", 
    **:primary_key => "uid"**

  belongs_to :recipient, 
    :class_name => "User", 
    :foreign_key => "recipient_uid", 
    **:primary_key => "uid"**

because user id was not primary key in User table.