diff --git a/Gemfile b/Gemfile
index 5e53c34..03b33ca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,6 +7,7 @@ gemspec
 
 # jquery-rails is used by the dummy application
 gem "jquery-rails"
+gem 'rspec-mocks'
 
 # Declare any dependencies that are still in development here instead of in
 # your gemspec. These might include edge Rails or gems from your path or
diff --git a/Gemfile.lock b/Gemfile.lock
index 5c957db..824fc09 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,7 +39,7 @@ GEM
     erubis (2.7.0)
     hike (1.2.1)
     i18n (0.6.0)
-    journey (1.0.2)
+    journey (1.0.3)
     jquery-rails (2.0.0)
       railties (>= 3.2.0.beta, < 5.0)
       thor (~> 0.14)
@@ -76,6 +76,7 @@ GEM
     rake (0.9.2.2)
     rdoc (3.12)
       json (~> 1.4)
+    rspec-mocks (2.8.0)
     sprockets (2.1.2)
       hike (~> 1.2)
       rack (~> 1.0)
@@ -94,4 +95,5 @@ PLATFORMS
 DEPENDENCIES
   jquery-rails
   rabl-fast-json!
+  rspec-mocks
   sqlite3
diff --git a/lib/rabl-fast-json.rb b/lib/rabl-fast-json.rb
index 08b598b..5214e6e 100644
--- a/lib/rabl-fast-json.rb
+++ b/lib/rabl-fast-json.rb
@@ -7,6 +7,7 @@ require 'active_support/core_ext/class/attribute_accessors'
 require 'rabl-fast-json/version'
 require 'rabl-fast-json/template'
 require 'rabl-fast-json/compiler'
+require 'rabl-fast-json/library'
 require 'rabl-fast-json/handler'
 require 'rabl-fast-json/railtie'
 
diff --git a/lib/rabl-fast-json/compiler.rb b/lib/rabl-fast-json/compiler.rb
index aa50983..9d3c17c 100644
--- a/lib/rabl-fast-json/compiler.rb
+++ b/lib/rabl-fast-json/compiler.rb
@@ -1,13 +1,9 @@
-require 'singleton'
-
 module RablFastJson
   class Compiler
 
-    def initialize(context, assigns = nil)
+    def initialize(context = nil, assigns = nil)
       @context = context
       @glue_count = 0
-      _get_assigns_from_context(assigns)
-      _get_virtual_path_from_context
     end
 
     def compile_source(source)
@@ -41,6 +37,7 @@ module RablFastJson
       return unless block_given?
       name = :"_glue#{@glue_count}"
       @glue_count += 1
+      Rails.logger.warn "[RABL] glue called with data = #{data.inspect}"
       _compile_sub_template(name, data, &block)
     end
 
@@ -50,7 +47,12 @@ module RablFastJson
     alias_method :code, :node
 
     def collection(data, options = {})
-      @data = data.to_a if data
+      object(data)
+    end
+
+    def extends(path)
+      t = Library.instance.get(path)
+      @template.merge!(t.source)
     end
 
     def object(data)
@@ -58,6 +60,10 @@ module RablFastJson
       @template.data, @template.root_name = data, name
     end
 
+    def method_missing(name, *args, &block)
+      @context.respond_to?(name) ? @context.send(name, *args, &block) : super
+    end
+
     protected
 
     def extract_data_and_name(name_or_data)
@@ -76,16 +82,5 @@ module RablFastJson
       template = compiler.compile_block(&block)
       @template[name] = template.merge!(:_data => data)
     end
-
-    def _get_assigns_from_context(assigns)
-      source = assigns || @context.instance_variable_get(:@_assigns)
-      source.each_pair { |k, v|
-        instance_variable_set("@#{k}", v) unless k.start_with?('_')
-      }
-    end
-
-    def _get_virtual_path_from_context
-      @virtual_path = @context.instance_variable_get(:@virtual_path)
-    end
   end
 end
\ No newline at end of file
diff --git a/lib/rabl-fast-json/handler.rb b/lib/rabl-fast-json/handler.rb
index 1318498..c86635c 100644
--- a/lib/rabl-fast-json/handler.rb
+++ b/lib/rabl-fast-json/handler.rb
@@ -6,7 +6,8 @@ module RablFastJson
 
       def self.call(template)
         %{
-          RablFastJson::Compiler.instance.compile_source(#{template.source.inspect}, self)
+          RablFastJson::Library.instance.
+            get_rendered_template(#{template.source.inspect}, self)
         }
       end
     end
diff --git a/lib/rabl-fast-json/library.rb b/lib/rabl-fast-json/library.rb
new file mode 100644
index 0000000..ba7e012
--- /dev/null
+++ b/lib/rabl-fast-json/library.rb
@@ -0,0 +1,43 @@
+require 'singleton'
+
+module RablFastJson
+  class Library
+    include Singleton
+
+    def initialize
+      @cached_templates = {}
+    end
+
+    def get_rendered_template(source, context)
+      path = context.instance_variable_get(:@virtual_path)
+      @view_renderer = context.instance_variable_get(:@view_renderer)
+      start = Time.now
+      compiled_template = get_compiled_template(path, source, context)
+      compiled_time = Time.now
+      compiled_template.context = context
+      r = compiled_template.render
+      render_time = Time.now
+      res = ActiveSupport::JSON.encode(r)
+      final_time = Time.now
+
+      Rails.logger.warn "[BENCHMARK] Compilation:\t#{(compiled_time - start) * 1000.0}ms"
+      Rails.logger.warn "[BENCHMARK] Rendering:\t\t#{(render_time - compiled_time) * 1000.0}ms"
+      Rails.logger.warn "[BENCHMARK] JSON encoding:\t#{(final_time - render_time) * 1000.0}ms"
+      Rails.logger.warn "[BENCHMARK] Total:\t\t#{(final_time - start) * 1000.0}ms"
+
+      res
+    end
+
+    def get_compiled_template(path, source, context)
+      #@cached_templates[path] ||=
+      Compiler.new(context).compile_source(source)
+    end
+
+    def get(path)
+      template = @cached_templates[path]
+      return template if !template.nil?
+      t = @view_renderer.lookup_context.find_template(path, [], false)
+      get_compiled_template(path, t.source, nil)
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/rabl-fast-json/template.rb b/lib/rabl-fast-json/template.rb
index a97a572..16d3dba 100644
--- a/lib/rabl-fast-json/template.rb
+++ b/lib/rabl-fast-json/template.rb
@@ -1,45 +1,58 @@
 module RablFastJson
   class CompiledTemplate
 
-    attr_accessor :source, :data, :root_name
+    attr_accessor :source, :data, :root_name, :context
 
-    delegate :[], :[]=, :to => :source
+    delegate :[], :[]=, :merge!, :to => :source
 
     def initialize
       @source = {}
     end
 
-    #
-    # def render(data = nil)
-    #   output = {}
-    #   @data = data if data
-    #
-    #   return render_collection if @data.respond_to?(:each)
-    #
-    #   @template.each_pair { |key, value|
-    #     out = case value
-    #     when Symbol
-    #       @data.send(value)
-    #     end
-    #     output[key] = out
-    #   }
-    #   output
-    # end
-    #
-    # def render_collection
-    #   output = []
-    #   @data.each { |o|
-    #     object = {}
-    #     @template.each_pair { |key, value|
-    #       out = case value
-    #       when Symbol
-    #         o.send(value)
-    #       end
-    #       object[key] = out
-    #     }
-    #     output << object
-    #   }
-    #   output
-    # end
+    def get_object_from_assigns
+      @object = @context.instance_variable_get(@data)
+    end
+
+    def render
+      get_object_from_assigns
+      @object.respond_to?(:each) ? render_collection : render_resource
+    end
+
+    def render_resource(data = nil, source = nil)
+      output = {}
+
+      data ||= @object
+      source ||= @source
+
+      source.each_pair { |key, value|
+        out = case value
+        when Symbol
+          data.send(value) # attributes
+        when Proc
+          value.call(data) # node
+        when Hash
+          data_symbol = value.delete(:_data)
+          object = data_symbol.to_s.start_with?('@') ? @context.instance_variable_get(data_symbol) : @object.send(data_symbol)
+          if key.to_s.start_with?('_') # glue
+            value.each_pair { |k, v|
+              output[k] = object.send(v)
+            }
+
+            next
+          else # child
+            object.respond_to?(:each) ? render_collection(object, value) : render_resource(object, value)
+          end
+        end
+        output[key] = out
+      }
+      output
+    end
+
+    def render_collection(collection = nil, source = nil)
+      output = []
+      collection ||= @object
+      collection.each { |o| output << render_resource(o, source) }
+      output
+    end
   end
 end
\ No newline at end of file
diff --git a/test/compiled_template_test.rb b/test/compiled_template_test.rb
index 8759458..ff4be17 100644
--- a/test/compiled_template_test.rb
+++ b/test/compiled_template_test.rb
@@ -1,5 +1,12 @@
 require 'test_helper'
 
-class TestCompiledTemplate
+class TestCompiledTemplate < ActiveSupport::TestCase
 
+  setup do
+    @context = Context.new
+    @user = User.new
+    @context.set_assign('user', @user)
+    @template = RablFastJson::CompiledTemplate.new
+    @template.context = @context
+  end
 end
\ No newline at end of file
diff --git a/test/compiler_test.rb b/test/compiler_test.rb
index 7b60a45..dc8c985 100644
--- a/test/compiler_test.rb
+++ b/test/compiler_test.rb
@@ -1,26 +1,6 @@
 require 'test_helper'
 
 class CompilerTest < ActiveSupport::TestCase
-  class Context
-    attr_accessor :virtual_path
-
-    def initialize
-      @_assigns = {}
-      @virtual_path = '/users'
-    end
-
-    def set_assign(key, value)
-      @_assigns[key] = value
-    end
-
-    def get_assign(key)
-      @_assigns[key]
-    end
-  end
-
-  class User
-    attr_accessor :name
-  end
 
   setup do
     @context = Context.new
@@ -29,20 +9,6 @@ class CompilerTest < ActiveSupport::TestCase
     @compiler = RablFastJson::Compiler.new(@context)
   end
 
-  test "assigns are correctly imported from context" do
-    assert_equal @user, @compiler.instance_variable_get(:@user)
-  end
-
-  test "virtual path is correctly imported from context" do
-    assert_equal '/users', @compiler.instance_variable_get(:@virtual_path)
-  end
-
-  test "assigns are not imported if already passed to the compiler" do
-    compiler = RablFastJson::Compiler.new(@context, { 'other' => 'foo' })
-    assert_nil compiler.instance_variable_get(:@user)
-    assert_equal 'foo', compiler.instance_variable_get(:@other)
-  end
-
   test "compiler return a compiled template" do
     assert_instance_of RablFastJson::CompiledTemplate, @compiler.compile_source("")
   end
@@ -78,38 +44,56 @@ class CompilerTest < ActiveSupport::TestCase
   end
 
   test "child with arbitrary source store the data with the template" do
-    t = @compiler.compile_source(%{ child @user => :author do attribute :name end })
-    assert_equal({ :author => { :_data => @user, :name => :name } }, t.source)
+    t = @compiler.compile_source(%{ child :@user => :author do attribute :name end })
+    assert_equal({ :author => { :_data => :@user, :name => :name } }, t.source)
   end
 
   test "glue is compiled as a child but with anonymous name" do
-    t = @compiler.compile_source(%{ glue @user do attribute :name end })
-    assert_equal({ :_glue0 => { :_data => @user, :name => :name } }, t.source)
+    t = @compiler.compile_source(%{ glue :@user do attribute :name end })
+    assert_equal({ :_glue0 => { :_data => :@user, :name => :name } }, t.source)
   end
 
   test "multiple glue don't come with name collisions" do
     t = @compiler.compile_source(%{
-      glue @user do attribute :name end
-      glue @user do attribute :foo end
+      glue :@user do attribute :name end
+      glue :@user do attribute :foo end
     })
 
     assert_equal({
-      :_glue0 => { :_data => @user, :name => :name},
-      :_glue1 => { :_data => @user, :foo => :foo}
+      :_glue0 => { :_data => :@user, :name => :name},
+      :_glue1 => { :_data => :@user, :foo => :foo}
     }, t.source)
   end
 
   test "object set data for the template" do
-    t = @compiler.compile_source(%{ object @user })
-    assert_equal @user, t.data
+    t = @compiler.compile_source(%{ object :@user })
+    assert_equal :@user, t.data
   end
 
   test "object property can define root name" do
-    t = @compiler.compile_source(%{ object @user => :author })
-    assert_equal @user, t.data
+    t = @compiler.compile_source(%{ object :@user => :author })
+    assert_equal :@user, t.data
     assert_equal :author, t.root_name
   end
 
+  test "collection set the data for the template" do
+    t = @compiler.compile_source(%{ collection :@user })
+    assert_equal :@user, t.data
+  end
+
+  test "collection property can define root name" do
+    t = @compiler.compile_source(%{ collection :@user => :users })
+    assert_equal :@user, t.data
+    assert_equal :users, t.root_name
+  end
+
+  test "extends use other template one's active" do
+    template = mock('template', :source => { :id => :id })
+    RablFastJson::Library.stub_chain(:instance, :get).with('users/base').and_return(template)
+    t = @compiler.compile_source(%{ extends 'users/base' })
+    assert_equal({ :id => :id }, t.source)
+  end
+
   test "node are compiled without evaluating the block" do
     t = @compiler.compile_source(%{ node(:foo) { bar } })
     assert_not_nil t.source[:foo]
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 7264099..d545410 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -2,6 +2,35 @@
 ENV["RAILS_ENV"] = "test"
 $:.unshift File.expand_path('../../lib', __FILE__)
 
+require 'rspec/mocks'
 require 'minitest/autorun'
 require 'active_support/test_case'
 require 'rabl-fast-json'
+
+module ActiveSupport
+  class TestCase
+    RSpec::Mocks::setup(self)
+    include RSpec::Mocks::ExampleMethods
+  end
+end
+
+class Context
+  attr_accessor :virtual_path
+
+  def initialize
+    @_assigns = {}
+    @virtual_path = '/users'
+  end
+
+  def set_assign(key, value)
+    @_assigns[key] = value
+  end
+
+  def get_assign(key)
+    @_assigns[key]
+  end
+end
+
+class User
+  attr_accessor :name
+end
\ No newline at end of file