Better Polymorphic Joins

model.rb

# frozen_string_literal: true

class Model < ApplicationRecord
  belongs_to :profile, polymorphic: true # can be Client::Profile or Freelancer::Profile models

  # only to be used through joins
  belongs_to :client_profile, -> { where("#{table_name}": { profile_type: 'Client::Profile' }) },
    foreign_key: 'profile_id', class_name: 'Client::Profile', optional: true   
  
  scope :clients, -> { joins(:client_profile) }
end