base_controller.rb

class Api::V1::BaseController < ApplicationController
	protect_from_forgery with: :null_session

	serialization_scope :current_user

	include ResourceLoader
	include TokenAuthentication

	after_action :build_response_headers

	rescue_from ActiveRecord::RecordNotFound do |exception|
		render json: { errors: ["Resource not found."] }, status: :not_found
	end

	rescue_from ActionController::ParameterMissing do |exception|
		render json: { errors: ["Missing parameters: #{list_to_comma_string(exception.param)}"] }, status: :bad_request
	end

	rescue_from AuthenticationError::InvalidCredentials do |exception|
		render json: { errors: ["Invalid credentials"] }, status: :unauthorized
	end

	rescue_from AuthenticationError::Unauthorized do |exception|
		render json: { errors: ["Unauthorized"] }, status: :unauthorized
	end

	rescue_from ActiveRecord::RecordInvalid do |exception|
		errors = exception.to_s.match(/\:(.*)/)
		errors = errors[1][1..errors[1].length].split(', ')
		render json: { errors: errors }, status: :unprocessable_entity
	end

	def require_parameters(required_params=[])
		missing_params = Array.new
		required_params.map { |p| missing_params << p unless params.has_key? p }
		raise ActionController::ParameterMissing.new(missing_params) if missing_params.any?
	end

end