API Base Controller

base_controller.rb

class API::BaseController < ApplicationController
  respond_to :json

  before_action :set_default_format, :assert_valid_format!, :authenticate_from_token!, :authenticate_client!

  protected

  def authenticate_from_token!
    token = request.headers['X-Authentication-Token']
    id    = request.headers['X-Authentication-Id']

    resource = User.find_by(authentication_token: token, id: id) if token && id

    sign_in resource, store: false if resource
  end

  private

  def set_default_format
    request.format = 'json'
  end

  def assert_valid_format!
    raise ActionController::UnknownFormat unless request.format == 'json'
  end
end