How return the type of polymorphic relationship?

Question

I have a participant model that return a polymorphic relationship called participable, I need return the type of relationship instead of type participable. I am using at frontend Ember.

class ParticipantSerializer < ApplicationSerializer # :nodoc:
  attributes :id

  belongs_to :dispute
  belongs_to :participable, polymorphic: true
end

Answer 1

In my case the issue is not with the polymorphic association, is with the app logic.

I fix it creating another associations through participants:

has_many :participants
has_many :users, through: :participants, source: :participable, source_type: 'User'
has_many :mediators, through: :participants, source: :participable, source_type: 'Mediator'

I hope this help.