New --skip-frontend option for refinery:engine generator

It will skip all frontend stuff (views, controller, routes, adding a new
page and also it skips some links in admin views)

core/lib/generators/refinery/engine/engine_generator.rb

@@ -8,6 +8,7 @@ class EngineGenerator < Rails::Generators::NamedBase
     argument :attributes, :type => :array, :default => [], :banner => "field:type field:type"
     class_option :namespace, :type => :string, :default => nil, :banner => 'NAMESPACE', :required => false
     class_option :engine, :type => :string, :default => nil, :banner => 'ENGINE', :required => false
+    class_option :skip_frontend, :type => :boolean, :default => false, :required => false, :desc => 'Generate engine without frontend'
     remove_class_option :skip_namespace
 
     def namespacing
@@ -50,6 +51,10 @@ def engine_plural_name
       end
     end
 
+    def skip_frontend?
+      options[:skip_frontend]
+    end
+
     def generate
       destination_pathname = Pathname.new(self.destination_root)
       clash_file = Pathname.new(File.expand_path('../clash_keywords.yml', __FILE__))
@@ -72,7 +77,7 @@ def generate
       end
 
       unless attributes.empty? and self.behavior != :revoke
-        Pathname.glob(Pathname.new(self.class.source_root).join('**', '**')).reject{|f| f.directory?}.sort.each do |path|
+        Pathname.glob(Pathname.new(self.class.source_root).join('**', '**')).reject{|f| f.directory? or reject_file?(f) }.sort.each do |path|
           unless (engine_path = engine_path_for(path, engine_name)).nil?
             template path, engine_path
           end
@@ -178,5 +183,8 @@ def engine_path_for(path, engine)
       path
     end
 
+    def reject_file?(file)
+      skip_frontend? and (file.to_s.include?('app') and not file.to_s.scan(/admin|models/).any?)
+    end
   end
 end

core/lib/generators/refinery/engine/templates/app/views/refinery/namespace/admin/plural_name/_singular_name.html.erb

@@ -4,9 +4,11 @@
     <span class="preview">&nbsp;</span>
   </span>
   <span class='actions'>
+    <% unless skip_frontend? %>
     <%%= link_to refinery_icon_tag("application_go.png"), refinery.<%= namespacing.underscore %>_<%= singular_name %>_path(<%= singular_name %>),
         :title => t('.view_live_html'),
         :target => "_blank" %>
+    <% end %>
     <%%= link_to refinery_icon_tag("application_edit.png"), refinery.edit_<%= namespacing.underscore %>_admin_<%= singular_name %>_path(<%= singular_name %>),
          :title => t('.edit') %>
     <%%= link_to refinery_icon_tag("delete.png"), refinery.<%= namespacing.underscore %>_admin_<%= singular_name %>_path(<%= singular_name %>),

core/lib/generators/refinery/engine/templates/config/routes.rb

@@ -1,8 +1,11 @@
+<<<<<<< HEAD
 Refinery::Core::Engine.routes.draw do
+  <% unless skip_frontend? %>
   # Frontend routes
   namespace :<%= namespacing.underscore %>: do
     resources :<%= class_name.pluralize.underscore.downcase %>, :only => [:index, :show]
   end
+  <% end %>
 
   # Admin routes
   namespace :<%= namespacing.underscore %>, :path => '' do

core/lib/generators/refinery/engine/templates/db/migrate/1_create_plural_name.rb

@@ -25,10 +25,11 @@ def down
       ::Refinery::UserPlugin.destroy_all({:name => "<%= class_name.pluralize.underscore.downcase %>"})
     end
 
+    <% unless skip_frontend? %>
     if defined?(::Refinery::Page)
       ::Refinery::Page.delete_all({:link_url => "/<%= plural_name %>"})
     end
-
+    <% end %>
     drop_table :refinery_<%= "#{namespacing.underscore}_" if table_name != namespacing.underscore.pluralize -%><%= table_name %>
   end
 

core/lib/generators/refinery/engine/templates/db/seeds/plural_name.rb

@@ -7,6 +7,7 @@
   end
 end
 
+<% unless skip_frontend? %>
 if defined?(::Refinery::Page) && ::Refinery::Page.where(:link_url => '/<%= plural_name %>').empty?
   page = ::Refinery::Page.create(
     :title => '<%= class_name.pluralize.underscore.titleize %>',
@@ -19,3 +20,4 @@
     page.parts.create(:title => default_page_part, :body => nil)
   end
 end
+<% end %>

core/spec/lib/generators/refinery/engine/engine_generator_without_frontend_spec.rb

@@ -0,0 +1,74 @@
+require 'spec_helper'
+require 'generator_spec/test_case'
+require 'generators/refinery/engine/engine_generator'
+
+module Refinery
+  describe EngineGenerator do
+    include GeneratorSpec::TestCase
+    destination File.expand_path("../../../../../../tmp", __FILE__)
+
+    before(:each) do
+      prepare_destination
+      run_generator %w{ rspec_product_test title:string description:text image:image brochure:resource --skip-frontend }
+    end
+
+    specify do
+      destination_root.should have_structure {
+        directory "vendor" do
+          directory "engines" do
+            directory "rspec_product_tests" do
+              directory "app" do
+                directory "controllers" do
+                  directory "refinery" do
+                    directory "rspec_product_tests" do
+                      directory "admin" do
+                        file "rspec_product_tests_controller.rb"
+                      end
+                      no_file "rspec_product_tests_controller.rb"
+                    end
+                  end
+                end
+                directory "models" do
+                  directory "refinery" do
+                    directory "rspec_product_tests" do
+                      file "rspec_product_test.rb"
+                    end
+                  end
+                end
+                directory "views" do
+                  directory "refinery" do
+                    directory "rspec_product_tests" do
+                      directory "admin" do
+                        directory "rspec_product_tests" do
+                          file "_form.html.erb"
+                          file "_sortable_list.html.erb"
+                          file "edit.html.erb"
+                          file "index.html.erb"
+                          file "new.html.erb"
+                          file "_rspec_product_test.html.erb"
+                        end
+                      end
+                      directory "rspec_product_tests" do
+                        no_file "index.html.erb"
+                        no_file "show.html.erb"
+                      end
+                    end
+                  end
+                end
+              end
+              directory "lib" do
+                file "refinerycms-rspec_product_tests.rb"
+              end
+              directory "config" do
+                directory "locales" do
+                  file "en.yml"
+                end
+                file "routes.rb"
+              end
+            end
+          end
+        end
+      }
+    end
+  end
+end