Jokes API in Grape

Gemfile

@@ -6,6 +6,8 @@ gem 'sinatra'
 
 gem 'sinatra-activerecord'
 
+gem 'grape'
+
 group :production do
   gem 'pg'
 end

Gemfile.lock

@@ -15,16 +15,43 @@ GEM
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     arel (6.0.3)
+    axiom-types (0.1.1)
+      descendants_tracker (~> 0.0.4)
+      ice_nine (~> 0.11.0)
+      thread_safe (~> 0.3, >= 0.3.1)
     builder (3.2.2)
+    coercible (1.0.0)
+      descendants_tracker (~> 0.0.1)
+    descendants_tracker (0.0.4)
+      thread_safe (~> 0.3, >= 0.3.1)
+    equalizer (0.0.11)
     ffi (1.9.10)
+    grape (0.13.0)
+      activesupport
+      builder
+      hashie (>= 2.1.0)
+      multi_json (>= 1.3.2)
+      multi_xml (>= 0.5.2)
+      rack (>= 1.3.0)
+      rack-accept
+      rack-mount
+      virtus (>= 1.0.0)
+    hashie (3.4.2)
     i18n (0.7.0)
+    ice_nine (0.11.1)
     json (1.8.3)
     listen (3.0.3)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
     minitest (5.8.1)
+    multi_json (1.11.2)
+    multi_xml (0.5.5)
     pg (0.18.3)
     rack (1.6.4)
+    rack-accept (0.4.5)
+      rack (>= 0.4)
+    rack-mount (0.8.3)
+      rack (>= 1.0.0)
     rack-protection (1.5.3)
       rack
     rb-fsevent (0.9.6)
@@ -44,12 +71,18 @@ GEM
     tilt (2.0.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
+    virtus (1.0.5)
+      axiom-types (~> 0.1)
+      coercible (~> 1.0)
+      descendants_tracker (~> 0.0, >= 0.0.3)
+      equalizer (~> 0.0, >= 0.0.9)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   activerecord
+  grape
   pg
   rerun
   sinatra

app.rb

@@ -7,58 +7,53 @@ require './config/environments'
 
 require './model/joke'
 
-before do
-  content_type :json
-  response.headers['Access-Control-Allow-Origin'] = '*'
+class Jokes < Grape::API
+  format :json
+
+  rescue_from ActiveRecord::RecordNotFound do |e|
+    rack_response('{ "status": 404, "message": "Not Found." }', 404)
   end
 
-get '/jokes' do
-  Joke.all.to_json
+  resource :jokes do
+    desc 'Return all jokes'
+    get do
+      Joke.all
     end
 
-post '/jokes' do
-  @joke = Joke.new(params[:joke])
-
-  if @joke.save
-    status 201
-  else
-    status 422
+    desc 'Create new joke'
+    params do
+      requires :joke, type: String, desc: 'Joke'
+      requires :punchline, type: String, desc: 'Punchline'
     end
+    post do
+      Joke.create!(
+        joke: params[:joke],
+        punchline: params[:punchline]
+      )
     end
 
-get '/jokes/:id' do
-  begin
-    @joke = Joke.find(params[:id])
-  rescue Exception
-    status 404
-    return
+    route_param :id do
+      desc 'View a single joke'
+      get do
+        Joke.find(params[:id])
       end
 
-  @joke.to_json
+      desc 'Update a joke'
+      params do
+        requires :joke, type: String, desc: 'Joke'
+        requires :punchline, type: String, desc: 'Punchline'
+      end
+      put do
+        Joke.find(params[:id]).update({
+          joke: params[:joke],
+          punchline: params[:punchline]
+        })
       end
 
-put '/jokes/:id' do
-  begin
-    @joke = Joke.find(params[:id])
-  rescue Exception
-    status 404
-    return
-  end
-
-  if @joke.update(params[:joke])
-    status 204
-  else
-    status 422
+      desc 'Delete a joke'
+      delete do
+        Joke.find(params[:id]).delete
       end
     end
-
-delete '/jokes/:id' do
-  begin
-    @joke = Joke.find(params[:id])
-
-    @joke.delete
-  rescue Exception
   end
-
-  status 204
 end

config.ru

@@ -1,2 +1,3 @@
 require './app'
-run Sinatra::Application
+
+map('/') { run Jokes }