CODEWITHSUNDEEP
rubymongoid
Kimmo Lehto
Kimmo Lehto

Reputation: 6041

Class methods on Mongoid embedded documents

I'd like to keep all authentication specific code in the file that defines the Auth "model" like this:

class User
  include Mongoid::Document
  embeds_one :auth
  field :username, type: String
end

class Auth
  include Mongoid::Document
  embedded_in :user, inverse_of: :auth
  field :password

  def self.login(user, pass)
    User.first(conditions: { username: user, password: pass })
  end
end

The problem? It's not possible to call class methods of embedded documents:

> Auth.login('user', 'pass')
Mongoid::Errors::InvalidCollection: Access to the collection for Auth is not allowed since it is an embedded document, please access a collection from the root document.

> User.auth.login('user', 'pass')
NoMethodError: undefined method `auth' for User:Class

Singleton methods in embedded Mongoid::Document models is not a good idea?

Upvotes: 3

Views: 967

Answers (1)

abhas
abhas

Reputation: 5213

You can't access embedded documents directly like you tried first time Auth.loggin('user','pass'). You should be having only instance methods in embedded document models like this

def self.login(user, pass)
   User.first(conditions: { username: user, password: pass })
end

and can access it by user object like this

@user.auth.login('user','pass')

Upvotes: 1

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