Simple serializer

Gemfile

@@ -5,6 +5,7 @@ gem 'activerecord'
 gem 'sinatra'
 
 gem 'sinatra-activerecord'
+gem 'sinatra-active-model-serializers'
 
 group :production do
   gem 'pg'

Gemfile.lock

@@ -1,6 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    active_model_serializers (0.9.3)
+      activemodel (>= 3.2)
     activemodel (4.2.4)
       activesupport (= 4.2.4)
       builder (~> 3.1)
@@ -15,6 +17,7 @@ GEM
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     arel (6.0.3)
+    backports (3.6.6)
     builder (3.2.2)
     ffi (1.9.10)
     i18n (0.7.0)
@@ -23,10 +26,13 @@ GEM
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
     minitest (5.8.1)
+    multi_json (1.11.2)
     pg (0.18.3)
     rack (1.6.4)
     rack-protection (1.5.3)
       rack
+    rack-test (0.6.3)
+      rack (>= 1.0)
     rb-fsevent (0.9.6)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
@@ -36,9 +42,21 @@ GEM
       rack (~> 1.4)
       rack-protection (~> 1.4)
       tilt (>= 1.3, < 3)
+    sinatra-active-model-serializers (0.2.1)
+      active_model_serializers (>= 0.9.0)
+      sinatra (~> 1.4)
+      sinatra-activerecord (>= 2.0.0)
+      sinatra-contrib (>= 1.4.1)
     sinatra-activerecord (2.0.9)
       activerecord (>= 3.2)
       sinatra (~> 1.0)
+    sinatra-contrib (1.4.6)
+      backports (>= 2.0)
+      multi_json
+      rack-protection
+      rack-test
+      sinatra (~> 1.4.0)
+      tilt (>= 1.3, < 3)
     sqlite3 (1.3.11)
     thread_safe (0.3.5)
     tilt (2.0.1)
@@ -53,6 +71,7 @@ DEPENDENCIES
   pg
   rerun
   sinatra
+  sinatra-active-model-serializers
   sinatra-activerecord
   sqlite3
 

app.rb

@@ -1,11 +1,16 @@
 require 'rubygems'
 require 'bundler'
 require 'bundler/setup'
+require 'json'
+require 'sinatra/json'
 Bundler.require
 
 require './config/environments'
 
 require './model/joke'
+require './serializers/joke_serializer'
+
+register Sinatra::ActiveRecordExtension
 
 before do
   content_type :json
@@ -13,7 +18,7 @@ before do
 end
 
 get '/jokes' do
-  Joke.all.to_json
+  json Joke.all, root: false
 end
 
 post '/jokes' do
@@ -34,7 +39,7 @@ get '/jokes/:id' do
     return
   end
 
-  @joke.to_json
+  json @joke, root: false
 end
 
 put '/jokes/:id' do

serializers/joke_serializer.rb

@@ -0,0 +1,3 @@
+class JokeSerializer < ActiveModel::Serializer
+  attributes :joke, :punchline
+end