Serialize.rb

Serialize.rb

class CustomerSerializer < ActiveModel::Serializer
  attributes :id, :name, :email
end

class SchedulingSerializer < ActiveModel::Serializer
  attributes :id, :beauty_salon_id, :schedule_id, :customer_id,
             :date_scheduling, :hour, :beauty_salon

  has_many :services

  def hour
    object.hour.strftime('%H:%M')
  end

  def date_scheduling
    object.date_scheduling.strftime('%d/%m/%Y')
  end

  def beauty_salon
    object.beauty_salon.name
  end

  def services
    object.services.select('id, name')
  end

end


#controllers

class Api::VacanciesController < Api::ApplicationController

  def by_date

    @beauty_salon = BeautySalon.where(id: params[:beauty_salon_id]).first

    @vacancies = @beauty_salon.vacancies(date_vacancies)
    render json:  @vacancies, each_serializer: VacancySerializer
  end

  private

    def date_vacancies
      @date_vacancies =
      begin
        Date.parse params[:date]
      rescue
        Date.today
      end
    end
end