Initial commit

config/initializers/mustache.rb

@@ -0,0 +1,6 @@
+# Be sure to install mustache gem and include mustache gem in project Gemfile.
+
+# Template Handler
+require 'mustache_rails'
+# Generator
+Rails.application.config.generators.template_engine :mustache_generator

lib/mustache-rails.rb

@@ -0,0 +1,134 @@
+require 'action_view'
+require 'active_support'
+require 'mustache'
+
+class Mustache
+
+  # TODO - Think about allowing to overwrite layout methods in subclassing views
+  # http://github.com/defunkt/mustache/blob/master/lib/mustache/sinatra.rb#L79-82
+  # http://github.com/defunkt/mustache/blob/master/lib/mustache/sinatra.rb#L96-102
+
+  # Remember to use {{{yield}}} (3 mustaches) as this shouldn't be escaped.
+  # Using {{{tag}}} will skip escaping HTML so if your mustache methods return
+  # HTML, be sure to interpolate them using 3 mustaches.
+
+  # Subclass Mustache::Rails for your view files. Place view files in
+  # app/views/:controller/:action.rb. 
+
+  # Mustache::Rails registers a TemplateHandler for ".rb" files. Templates go in
+  # app/templates/:controller/:action.format.mustache
+
+  class Rails < Mustache
+    attr_accessor :view
+
+    def method_missing(method, *args, &block)
+      view.send(method, *args, &block)
+    end
+
+    def respond_to?(method, include_private=false)
+      super(method, include_private) || view.respond_to?(method, include_private)
+    end
+
+    # Redefine where Mustache::Rails templates locate their partials:
+    #
+    # (1) in the same directory as the current template file.
+    # (2) in the shared templates path (can be configured via Config.shared_path=(value))
+    #
+    def partial(name)
+      partial_name = "#{name}.#{Config.template_extension}"
+      template_dir = Pathname.new(self.class.template_file).dirname
+      partial_path = File.expand_path("#{template_dir}/#{partial_name}")
+      unless File.file?(partial_path)
+        partial_path = "#{Config.shared_path}/#{partial_name}"
+      end
+      File.read(partial_path)
+    end
+
+    # You can change these defaults in, say, a Rails initializer or
+    # environment.rb, e.g.:
+    #
+    # Mustache::Rails::Config.template_base_path = Rails.root.join('app', 'templates')
+    module Config
+      def self.template_base_path
+        @template_base_path ||= ::Rails.root.join('app', 'templates')
+      end
+
+      def self.template_base_path=(value)
+        @template_base_path = value
+      end
+
+      def self.template_extension
+        @template_extension ||= 'html.mustache'
+      end
+
+      def self.template_extension=(value)
+        @template_extension = value
+      end
+
+      def self.shared_path
+        @shared_path ||= ::Rails.root.join('app', 'templates', 'shared')
+      end
+
+      def self.shared_path=(value)
+        @shared_path = value
+      end
+    end
+
+    class TemplateHandler < ActionView::Template::Handler
+
+      include ActionView::Template::Handlers::Compilable
+
+      self.default_format = :mustache
+
+      # @return [String] its evaled in the context of the action view
+      # hence the hack below
+      #
+      # @param [ActionView::Template]
+      def compile(template)
+        mustache_class = mustache_class_from_template(template)
+        mustache_class.template_file = mustache_template_file(template)
+
+        <<-MUSTACHE
+          mustache = ::#{mustache_class}.new
+          mustache.view = self
+          mustache[:yield] = content_for(:layout)
+          mustache.context.update(local_assigns)
+          variables = controller.instance_variable_names
+          variables -= %w[@template]
+      
+          if controller.respond_to?(:protected_instance_variables)
+            variables -= controller.protected_instance_variables
+          end
+      
+          variables.each do |name|
+            mustache.instance_variable_set(name, controller.instance_variable_get(name))
+          end
+      
+          # Declaring an +attr_reader+ for each instance variable in the
+          # Mustache::Rails subclass makes them available to your templates.
+          mustache.class.class_eval do
+            attr_reader *variables.map { |name| name.sub(/^@/, '').to_sym }
+          end
+
+          mustache.render
+        MUSTACHE
+      end
+
+    private
+
+      def mustache_class_from_template(template)
+        const_name = ActiveSupport::Inflector.camelize(template.virtual_path.to_s)
+        defined?(const_name) ? const_name.constantize : Mustache
+      end
+
+      def mustache_template_file(template)
+        virtual_path = template.virtual_path.sub('alfred/views/','')
+        "#{Config.template_base_path}/#{virtual_path}.#{Config.template_extension}"
+      end
+
+    end
+  end
+end
+
+::ActiveSupport::Dependencies.load_paths << Rails.root.join("app", "views")
+::ActionView::Template.register_template_handler(:rb, Mustache::Rails::TemplateHandler)