Add jsonapi:controllers generator

README.md

@@ -1042,6 +1042,10 @@ end
 
 Of course you are free to extend this as needed and override action handlers or other methods.
 
+A jsonapi-controller generator is avaliable
+```
+rails generate jsonapi:controller contact
+```
 
 ###### Context
 

lib/generators/jsonapi/USAGE

@@ -1,8 +1,13 @@
 Description:
     Generator for JSONAPI Resources
 
-Example:
+Examples:
     rails generate jsonapi:resource Post
 
     This will create:
         app/resources/post_resource.rb
+
+    rails generate jsonapi:controller Post
+
+    This will create:
+        app/controllers/posts_controller.rb

lib/generators/jsonapi/controller_generator.rb

@@ -0,0 +1,14 @@
+module Jsonapi
+  class ControllerGenerator < Rails::Generators::NamedBase
+    source_root File.expand_path('../templates', __FILE__)
+
+    def create_resource
+      template_file = File.join(
+        'app/controllers',
+        class_path,
+        "#{file_name.pluralize}_controller.rb"
+      )
+      template 'jsonapi_controller.rb', template_file
+    end
+  end
+end

lib/generators/jsonapi/templates/jsonapi_controller.rb

@@ -0,0 +1,4 @@
+<% module_namespacing do -%>
+class <%= class_name.pluralize %>Controller < JSONAPI::ResourceController
+end
+<% end -%>

test/lib/generators/jsonapi/controller_generator_test.rb

@@ -0,0 +1,25 @@
+require File.expand_path('../../../../test_helper', __FILE__)
+require 'generators/jsonapi/controller_generator'
+
+module Jsonapi
+  class ControllerGeneratorTest < Rails::Generators::TestCase
+    tests ControllerGenerator
+    destination Rails.root.join('../controllers')
+    setup :prepare_destination
+    teardown :cleanup_destination_root
+
+    def cleanup_destination_root
+      FileUtils.rm_rf destination_root
+    end
+
+    test "controller is created" do
+      run_generator ["post"]
+      assert_file 'app/controllers/posts_controller.rb', /class PostsController < JSONAPI::ResourceController/
+    end
+
+    test "controller is created with namespace" do
+      run_generator ["api/v1/post"]
+      assert_file 'app/controllers/api/v1/posts_controller.rb', /class Api::V1::PostsController < JSONAPI::ResourceController/
+    end
+  end
+end