CODEWITHSUNDEEP
rubymongodbassociationsmongodb-querymongomapper
meso_2600
meso_2600

Reputation: 2130

How do I create two relations in one document

I am using mongomapper and I am saving association using the following method:

class Task
  include MongoMapper::Document
  key :user_id, ObjectId #also works without this line

  belongs_to :user

def self.add(user)
  a = self.new
  a.user_id = user
  a.save
end

And in the User model I have added: many :Tasks

Now, I would like to save two users (in the html form I select 2 users from the Users collection), without using the array, I want to save them separately:

class Task
  include MongoMapper::Document
  key :from_user_id, ObjectId # user1 links to the Users model
  key :to_user_id, ObjectId # user2 links to the Users model

How od I do that?

Upvotes: 0

Views: 42

Answers (1)

numbers1311407
numbers1311407

Reputation: 34072

MongoMapper has similar options as ActiveRecord when it comes to specifying keys and class names. You'd do something like:

class Task
  include MongoMapper::Document
  key :to_user_id, ObjectId
  key :from_user_id, ObjectId
  belongs_to :from_user, class_name: 'User', foreign_key: :from_user_id
  belongs_to :to_user, class_name: 'User', foreign_key: :to_user_id
end

Upvotes: 1

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