Add processor generator, allow resource generator to create others

Restructure the generators directory structure
Controller generator can now add routes

Author: lgebhardt

jsonapi-resources.gemspec

@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
   spec.required_ruby_version = '>= 2.3'
 
-  spec.add_development_dependency 'bundler', '~> 1.17.3'
+  spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'minitest', '~> 5.10', '!= 5.10.2'
   spec.add_development_dependency 'minitest-spec-rails'

lib/generators/jsonapi/USAGE

@@ -0,0 +1,11 @@
+Description:
+    Controller Generator for JSONAPI Resources
+
+Examples:
+    rails generate jsonapi:controller Post
+
+    This will:
+        create: app/controllers/posts_controller.rb
+        add: a route to routes.rb
+
+    Note: If the resource is namespaced the namespace will be duplicated for each route

lib/generators/jsonapi/controller/USAGE

@@ -0,0 +1,62 @@
+module Jsonapi
+  class ControllerGenerator < Rails::Generators::NamedBase
+    source_root File.expand_path('../templates', __FILE__)
+
+    class_option :base_controller, type: :string, default: 'JSONAPI::ResourceController'
+    class_option :skip_routes, type: :boolean, desc: "Don't add routes to config/routes.rb."
+
+    def create_resource
+      template_file = File.join(
+        'app/controllers',
+        class_path,
+        "#{file_name.pluralize}_controller.rb"
+      )
+      template 'controller.rb.tt', template_file
+    end
+
+    def add_routes
+      return if options[:skip_routes]
+      route generate_routing_code
+    end
+
+    private
+
+    def base_controller
+      options['base_controller']
+    end
+
+    # This method creates nested route entry for namespaced resources.
+    # For eg. rails g controller foo/bar/baz index show
+    # Will generate -
+    # namespace :foo do
+    #   namespace :bar do
+    #     get 'baz/index'
+    #     get 'baz/show'
+    #   end
+    # end
+    def generate_routing_code
+      depth = 0
+      lines = []
+
+      # Create 'namespace' ladder
+      # namespace :foo do
+      #   namespace :bar do
+      regular_class_path.each do |ns|
+        lines << indent("namespace :#{ns} do\n", depth * 2)
+        depth += 1
+      end
+
+      lines << indent(%{jsonapi_resources :#{file_name.pluralize}\n}, depth * 2)
+
+      # Create `end` ladder
+      #   end
+      # end
+      until depth.zero?
+        depth -= 1
+        lines << indent("end\n", depth * 2)
+      end
+
+      lines.join
+    end
+  end
+end

lib/generators/jsonapi/controller/controller_generator.rb

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

lib/generators/jsonapi/controller/templates/controller.rb.tt

@@ -0,0 +1,8 @@
+Description:
+    Processor Generator for JSONAPI Resources
+
+Examples:
+    rails generate jsonapi:processor Post
+
+    This will:
+        create: app/processors/post_processor.rb

lib/generators/jsonapi/controller_generator.rb

@@ -0,0 +1,22 @@
+module Jsonapi
+  class ProcessorGenerator < Rails::Generators::NamedBase
+    source_root File.expand_path('../templates', __FILE__)
+
+    class_option :base_processor, type: :string, default: 'JSONAPI::Processor'
+
+    def create_processor
+      template_file = File.join(
+        'app/processors',
+        class_path,
+        "#{file_name.singularize}_processor.rb"
+      )
+      template 'processor.rb.tt', template_file
+    end
+
+    private
+
+    def base_processor
+      options['base_processor']
+    end
+  end
+end

lib/generators/jsonapi/processor/USAGE

@@ -0,0 +1,4 @@
+<% module_namespacing do -%>
+class <%= class_name.singularize %>Processor < <%= base_processor %>
+end
+<% end -%>

lib/generators/jsonapi/processor/processor_generator.rb

@@ -0,0 +1,13 @@
+Description:
+    Generator for JSONAPI Resources
+
+Options:
+    --controller Also generate a controller
+    --processor Also generate a processor
+    --model Also generate a model
+
+Examples:
+    rails generate jsonapi:resource Post
+
+    This will:
+        create: app/resources/post_resource.rb