Question

Users on my site each have one list, which consists of a different type of users. I’m using a has_many through relationship to do this as follows:

List.rb:

class List < ActiveRecord::Base
  belongs_to :company
  has_many :list_applicants
  has_many :applicants, through: :list_applicants
end

Applicant.rb:

class Applicant < ActiveRecord::Base
  has_many :list_applicants
  has_many :lists, through: :list_applicants
end

ListApplicant.rb

class ListApplicant < ActiveRecord::Base
  attr_accessible :applicant_id, :list_id
  belongs_to :applicant
  belongs_to :list
end

Company.rb:

 class Company < ActiveRecord::Base
   has_one :list
 end

When a user adds another user to their list, I’d like to record the date the user is added so they can sort their list of users by date added. What is the best way to do this?

Answer 1

You can use the created_at field of the ListApplicant model if it has one. If not, you may add manually a similar field.

UPDATE:

You can access the field by specifying both applicant and list like this:

@applicant.list_applicants.where(list_id: @list.id).first.created_at