lib/hanami/view/rendering.rb in hanami-view-0.6.1 vs lib/hanami/view/rendering.rb in hanami-view-0.7.0

@@ -1,7 +1,8 @@
 require 'hanami/view/rendering/registry'
 require 'hanami/view/rendering/scope'
+require 'hanami/view/rendering/null_local'
 
 module Hanami
   module View
     # Rendering methods
     #
@@ -102,10 +103,29 @@
         #   view.render # => {title: ...}
         def render
           layout.render
         end
 
+        # It tries to invoke a method for the view or a local for the given key.
+        # If the lookup fails, it returns a null object.
+        #
+        # @return [Objeect,Hanami::View::Rendering::NullLocal] the returning value
+        #
+        # @since 0.7.0
+        #
+        # @example
+        #   <% if local(:plan).overdue? %>
+        #     <h2>Your plan is overdue.</h2>
+        #   <% end %>
+        def local(key)
+          if respond_to?(key)
+            __send__(key)
+          else
+            locals.fetch(key) { NullLocal.new(key) }
+          end
+        end
+
         protected
         # The output of the template rendering process.
         #
         # @return [String] the rendering output
         #
@@ -244,11 +264,11 @@
       # @since 0.1.0
       #
       # @see Hanami::View.load!
       def load!
         super
-        registry.freeze
+        load_registry!
       end
 
       private
 
       # The registry that holds all the registered subclasses.
@@ -257,9 +277,14 @@
       # @since 0.1.0
       #
       # @see Hanami::View::Rendering::Registry
       def registry
         @registry ||= Registry.new(self)
+      end
+
+      def load_registry!
+        @registry = nil
+        registry.freeze
       end
     end
   end
 end