Hi all,
I try to implement an internal mail system to my rails app. I found this message [1] on another mailing list, but i need it to be a little different.
So here's the case : i got a user table, a message table, and a communication table. This last one contains the message_id, the sender_id and the receiver_id. I need it for some future improvment.
# user.rb
has_many :communications, :dependent => :destroy has_many :sent_messages, :class_name => "Message", :through => :communications, :source => :sender, :order => 'created_at DESC' has_many :received_messages, :class_name => "Message", :foreign_key => "receiver_id", :order => 'created_at DESC' has_many :unread_messages, :class_name => "Message", :foreign_key => "receiver_id", :conditions => ['read_at IS NULL'], :order => 'created_at DESC'
# communication.rb
belongs_to :sender, :class_name => "User", :foreign_key => "sender_id" belongs_to :receiver, :class_name => "User", :foreign_key =>"receiver_id" has_one :message
# message.rb
belongs_to :communication
But when i try to get some_user.sent_message, it returns me this error :
ActiveRecord::StatementInvalid: PGError: ERROR: column communications.user_id does not exist LINE 1: ...messages.id = communications.sender_id WHERE (("communica... ^ : SELECT "messages".* FROM "messages" INNER JOIN communications ON messages.id = communications.sender_id WHERE (("communications".user_id = 1)) ORDER BY created_at DESC
Obviously, something went wrong and Rails try to get the communications.user_id id place of communications.sender_id.
Any help would be appreciate. Thanks 