How can I return a 404 JSON format in Rails 4?

Question

I am new to Ruby. I am writing a Restful API application using Rails 4. How can I return a 404 JSON not found string when the record is not found?

I found a number of posts but no luck, only for Rails 3.

In my controller I can caught the exception

  def show
    country = Country.find(params[:id])
    render :json => country.to_record
  rescue Exception
    render :json => "404"
  end

But I want a generic one to capture all the not found resources.

score 24 · Answer 1 · answered Mar 27 '15 at 03:20

Use rescue_from. See http://guides.rubyonrails.org/v2.3.11/action_controller_overview.html#rescue

In this instance use something like:

class ApplicationController < ActionController::Base
  rescue_from ActiveRecord::RecordNotFound, :with => :record_not_found

  private
  def record_not_found(error)
    render json: { error: error.message }, status: :not_found
  end
end

score -1 · Answer 2 · answered Apr 28 '14 at 04:12

-1

Do:

def show
  country = Country.find(params[:id])
  render :json => country.to_record
rescue Exception
  render :json => 404_json_text, :status => 404
end

answered Apr 28 '14 at 04:12

SreekanthGS

988
5
12

can i capture it in generic way? – TheOneTeam Apr 28 '14 at 04:32
Refer to: http://stackoverflow.com/questions/2385799/how-to-redirect-to-a-404-in-rails – SreekanthGS Apr 28 '14 at 04:34

How can I return a 404 JSON format in Rails 4?

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