rentals_controller.rb

class RentalsController < ApplicationController

# TODO: To make this happen automatically 
  def checkout
    @rental = Rental.new(rental_params)
    @rental.check_date

    if @rental.save
      @rental.build_rental
      render json: rental_params, status: :ok
    else
      #failure
      render json: {errors: @rental.errors.messages }, status: :bad_request
    end
  end


  def check_in
    @rental = Rental.find_by(customer_id: params[:customer_id], movie_id: params[:movie_id])

    if @rental.nil?
        render json: {
          "errors": {
            "id": ["No rental with id #{params[:id]}"]
          }
          }, status: :not_found
    else
      @rental.build_return
      render(json: @rental.as_json(only: [:customer_id, :movie_id]), status: :ok)
    end
  end

  private
  def rental_params
    params.permit(:customer_id, :movie_id)
  end
end