Add documentation for RablRails#render

lib/rabl-rails/renderer.rb

@@ -6,6 +6,10 @@ module RablRails
     mattr_reader :view_path
     @@view_path = 'app/views'
   
+    #
+    # Context class to emulate normal rendering view
+    # context
+    #
     class Context
       def initialize
         @_assigns = {}
@@ -16,11 +20,22 @@ module RablRails
       end
     end
   
+    #
+    # Renders object with the given rabl template.
+    # 
+    # Object can also be passed as an option :
+    # { locals: { object: obj_to_render } }
+    #
+    # Default render format is JSON, but can be changed via
+    # an option: { format: 'xml' }
+    #
     def render(object, template, options = {})
       format = options.delete(:format) || 'json'
+      object = options[:locals].delete(:object) if !object && options[:locals]
+
       source = find_template(template, format, options.delete(:view_path))
       compiled_template = Compiler.new.compile_source(source)
-    
+
       c = Context.new
       c.assigns[compiled_template.data.to_s[1..-1]] = object if compiled_template.data
 
@@ -29,6 +44,11 @@ module RablRails
   
     private
   
+    #
+    # Manually find given rabl template file with given format.
+    # View path can be set via options, otherwise default Rails
+    # path is used
+    #
     def find_template(name, format, view_path = nil)
       view_path ||= self.view_path
       path = File.join(view_path, "#{name}.#{format}.rabl")