Custom Error Handling with Rails 4.0

Question

I\'m building a Ruby on Rails api using Ruby 2.0 and Rails 4.0. My app is almost solely a JSON API, so if an error occurs (500, 404), I want to capture that error and return

Answer 1

The request isn't even hitting your app.

You need to define a catchall route so Rails will send the request to your app rather than display an error (in development) or render the public/404.html page (in production)

Modify your routes.rb file to include the following

match "*path", to: "errors#catch_404", via: :all

And in your controller

class ErrorsController < ApplicationController

  def catch_404
    raise ActionController::RoutingError.new(params[:path])
  end
end

And your rescue_from should catch the error then.