MaryKuz

{
     "errors": {
       "ActiveRecord::RecordNotFound": [
         "Couldn't find Product with 'id'=4"
       ]
     }
   }

MaryKuz

<%= sanitize({ errors: { @exception.class.name => [@exception.to_s] } }.to_json) %>

MaryKuz

class ApplicationController < ActionController::Base
     ...

     rescue_from ActiveRecord::RecordNotFound do |exception|
       @exception = exception

       render :exception
     end

     ...

MaryKuz

require 'rails_helper'

   describe ProductDecorator do
     describe '#as_json' do
       let(:product) { stub_model Product, id: 1, name: 'apple', price: 10.0, description: 'green' }

       subject { product.decorate.as_json }

       its([:id]) { should eq 1 }

MaryKuz

class ProductDecorator < Draper::Decorator
     delegate_all

     def as_json *args
       {
        id: id,
        name: name,
        price: price,
        description: description
       }

MaryKuz

Product.create!([{ name: 'apple', price: 5, description: 'green' },
                    { name: 'beer', price: 10, description: 'cold' }])

MaryKuz

class ApplicationController < ActionController::Base
    ...

     helper_method :resource, :collection

    ...
   end

MaryKuz

class Api::ProductsController < ApplicationController
     private
     def collection
       @products ||= Product.all
     end

     def resource
       @product ||= Product.find params[:id]
     end
   end

MaryKuz

RSpec.describe Api::ProductsController, type: :controller do

...

  describe '#index.json' do
    before { get :index, format: :json }

    it { should render_template :index }
  end

MaryKuz

namespace :api do
     resources :products, only: [:index, :show]
   end