incorporate Engine into chanko

config/routes.rb

@@ -0,0 +1,6 @@
+Chanko::Engine.routes.draw do
+end
+
+Chanko::Application.routes.draw do
+  mount Chanko::Engine => "/ext"
+end

lib/chanko.rb

@@ -1,3 +1,7 @@
+# singletone issue will be fixed
+# https://github.com/radar/forem/commit/049057a8e94e59610365b6764c733eb7876c8351
+require 'active_support/core_ext/kernel/singleton_class'
+require 'chanko/engine'
+
 module Chanko
-  require 'chanko/railtie'
 end

lib/chanko/railtie.rb → lib/chanko/engine.rb

@@ -7,7 +7,7 @@ module Chanko
     autoload klass.camelize, "chanko/#{klass}"
   end
 
-  class Railtie < Rails::Railtie
+  class Engine < ::Rails::Engine
     initializer 'chanko.attach' do |app|
       ::ActionView::Base.send(:include, Chanko::Invoker)
       ::ActionController::Base.send(:include, Chanko::Invoker)

lib/chanko/loader.rb

@@ -90,7 +90,6 @@ def aborted_units
         self.__aborted.uniq
       end
 
-
       def load_expander(unit_name)
         %w(models helpers).each do |targets|
           Chanko::Loader.directories.each do |directory|
@@ -152,11 +151,21 @@ def deregister(obj)
 
       def load_path_file(file, root)
         @directories = Chanko::Directories.load_path_file(file, root)
+        initialize_engines
       end
 
       def add_path(path)
         @directories ||= Chanko::Directories.new
         @directories.add(path)
+        initialize_engines
+      end
+
+      def initialize_engines
+        Chanko::Loader.directories.each do |directory|
+          Pathname.glob("#{directory}/*/lib/*/engine.rb").each do |engine|
+            require engine.sub(/\.rb$/, '')
+          end
+        end
       end
 
       def remove_path(path)

spec/app.rb

@@ -30,6 +30,8 @@ class CreateAllTables < ::ActiveRecord::Migration
   def self.up
     create_table(:users) {|t| t.string :name }
     create_table(:recipes) {|t| t.string :title; t.integer :user_id }
+    create_table(:diaries) {|t| t.string :content; t.integer :user_id }
+    create_table(:comments) {|t| t.string :content; t.integer :user_id }
   end
 end
 

spec/app/route.rb

@@ -1,3 +1,4 @@
 Chanko::Application.routes.draw do
+  mount Chanko::Engine => "/"
   match '/:controller(/:action(/:id))'
 end

spec/fixtures/test_units/engine_unit/app/controllers/engine_unit/top_controller.rb

@@ -0,0 +1,7 @@
+module EngineUnit
+  class TopController < ActionController::Base
+    def top
+      render :text => 'hoge'
+    end
+  end
+end

spec/fixtures/test_units/engine_unit/app/models/engine_unit/comment.rb

@@ -0,0 +1,8 @@
+module EngineUnit
+  class Comment < ActiveRecord::Base
+    set_table_name :comments
+    def hello
+      'hello'
+    end
+  end
+end

spec/fixtures/test_units/engine_unit/config/routes.rb

@@ -0,0 +1,8 @@
+EngineUnit::Engine.routes.draw do
+  match '/' => 'top#top'
+end
+
+Chanko::Engine.routes.draw do
+  mount EngineUnit::Engine => "/engine_unit"
+end
+

spec/fixtures/test_units/engine_unit/lib/engine_unit/engine.rb

@@ -0,0 +1,5 @@
+module EngineUnit
+  class Engine < ::Rails::Engine
+    isolate_namespace EngineUnit
+  end
+end

spec/integration/engine_spec.rb

@@ -0,0 +1,13 @@
+require 'spec_helper'
+
+describe "Chanko", :type => :integration do
+  describe "Engine" do
+    before do
+    end
+
+    it 'access engine action' do
+      visit "/engine_unit"
+      (response || page).body.should == 'hoge'
+    end
+  end
+end

spec/lib/engine_spec.rb

@@ -0,0 +1,27 @@
+require 'spec_helper'
+
+describe Chanko do
+  shared_examples_for 'engine' do
+    describe 'model' do
+      it 'use engine model method' do
+        EngineUnit::Comment.new.hello.should == 'hello'
+      end
+
+      it'save engine model' do
+        expect {
+          EngineUnit::Comment.create
+        }.to change(EngineUnit::Comment, :count).from(0).to(1)
+      end
+    end
+  end
+
+  context 'with cache_classes' do
+    before { Chanko.config.cache_classes = true }
+    it_should_behave_like 'engine'
+  end
+
+  context 'without cache_classes' do
+    before { Chanko.config.cache_classes = false }
+    it_should_behave_like 'engine'
+  end
+end

spec/spec_helper.rb

@@ -10,6 +10,7 @@
 
 require 'chanko'
 require 'haml'
+require 'fixtures/test_units/engine_unit/lib/engine_unit/engine'
 require 'app'
 
 #Rails.root = Fir.dirname(__FILE__)
@@ -45,7 +46,7 @@ def fixtures_path
   config.before(:suite) do
     $: << fixtures_path.join('lib')
     path = fixtures_path.join('test_units')
-    Chanko::Loader.directories.unshift(path)
+    Chanko::Loader.add_path(path)
     Chanko::ActiveIf.files = [fixtures_path.join('active_if', "main")]
     ApplicationController.send(:include, Chanko::Invoker)
     ActionView::Base.send(:include, Chanko::Invoker)