API Error Handling with Problem Details (RFC7807-ish)

                  class Api::BaseController < ActionController::API
  rescue_from ActiveRecord::RecordNotFound do |e|
    render_problem(status: 404, type: 'not_found', title: 'Not Found', detail: e.message)
  end

  rescue_from ActionController::ParameterMissing do |e|
    render_problem(status: 422, type: 'invalid_request', title: 'Invalid Request', detail: e.message)
  end

  private

  def render_problem(status:, type:, title:, detail: nil, extra: {})
    render status: status, json: {
      type: type,
      title: title,
      status: status,
      detail: detail,
      request_id: request.request_id
    }.merge(extra)
  end
end