Improve the Rails generator

lib/generators/curly/controller/controller_generator.rb

@@ -4,7 +4,7 @@
 module Curly
   module Generators
     class ControllerGenerator < Rails::Generators::NamedBase
-      source_root File.expand_path("../templates", __FILE__)
+      source_root File.expand_path("../../templates", __FILE__)
 
       argument :actions, type: :array, default: [], banner: "action action"
 
@@ -19,6 +19,7 @@ def create_view_files
           @view_path = File.join(base_views_path, "#{action}.html.curly")
           @presenter_path = File.join(base_presenters_path, "#{action}_presenter.rb")
           @action = action
+          @assign = class_path.last.try(:singularize)
           @presenter_name = "#{class_name}::#{action.capitalize}Presenter"
 
           template "view.html.curly.erb", @view_path

lib/generators/curly/presenter/presenter_generator.rb

@@ -0,0 +1,33 @@
+require 'rails/generators'
+require 'rails/generators/named_base'
+
+module Curly
+  module Generators
+    class PresenterGenerator < Rails::Generators::NamedBase
+      source_root File.expand_path('../../templates', __FILE__)
+
+      desc "Creates a presenter class for the given view path."
+      def generate_presenter
+        @presenter_name = "#{presenter_namespace}::#{file_name.capitalize}Presenter"
+        @assign = class_path.last.singularize
+
+        empty_directory base_presenters_path
+        template "presenter.rb.erb", presenter_path
+      end
+
+      private
+
+      def presenter_path
+        File.join(base_presenters_path, "#{file_name}_presenter.rb")
+      end
+
+      def base_presenters_path
+        File.join("app/presenters", class_path)
+      end
+
+      def presenter_namespace
+        class_path.map { |m| m.camelize }.join('::')
+      end
+    end
+  end
+end

lib/generators/curly/templates/presenter.rb.erb

@@ -0,0 +1,10 @@
+class <%= @presenter_name %> < Curly::Presenter
+  <%- if @assign -%>
+  presents :<%= @assign %>
+
+  <%- end -%>
+  # Public methods are available to the template as components.
+  def greeting
+    "Hello, World!"
+  end
+end