CODEWITHSUNDEEP
ruby-on-railspostgresqlruby-on-rails-4
Oscar Vazquez
Oscar Vazquez

Reputation: 437

Ruby on Rails two separate polymorphic associations between two tables

I've been stuck on this problem for a couple of days now, I found some other stack questions that we're similar but there solutions didn't help. I'm trying to create two seperate polymorphic associations between two tables. I have a users table, a business table and a messages table. I wan't the user to be able to message each other with a one on one conversation.

This is my messages schema: 

class CreateMessages < ActiveRecord::Migration
  def change
    create_table :messages do |t|
       t.references :receiver, polymorphic: true, index: true
       t.text :message
       t.boolean :status, default: false
       t.references :sender, polymorphic: true, index: true
       t.timestamps
     end
  end
end

Messages Model

class Message < ActiveRecord::Base
   belongs_to :sender, polymorphic: true
   belongs_to :receiver, polymorphic: true

   scope :unread, lambda {|| where("status = false")}

end

Users Model

    has_many :messages, as: :sender
    has_many :messages_out, as: :receiver, source: :messages

Business Model

    has_many :messages, as: :sender
    has_many :messages_out, as: :receiver, source: :messages

Rails Console

2.2.1 :060 > User.first.messages_out
User Load (1.3ms)  SELECT  "users".* FROM "users"   ORDER BY "users"."id" ASC LIMIT 1
NameError: uninitialized constant User::MessagesOut

When I try to access messages as sender it works completely fine and I get the expected output. I tried changing the name of the first relationship to something else but then both of the relationships would fail. 

User.first.messages

I tried several variations of this and none of them seem to be working, if setting up my database or model like this is just ill advised, and this setup can't work please let me know and any other setup would be appreciated.

Upvotes: 0

Views: 213

Answers (1)

tpbowden
tpbowden

Reputation: 2090

You need to explicitly say which class the messages_out method should be loading:

has_many :messages_out, as: :receiver, source: :messages, class_name: "Message"

Upvotes: 1

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