lib/gon/rabl.rb in gon-2.3.0 vs lib/gon/rabl.rb in gon-3.0.0

@@ -1,15 +1,64 @@
+require 'action_view'
 require 'rabl'
 
 module Gon
   module Rabl
     class << self
 
+      def handler(args, global = false)
+        options = parse_options_from args, global
+        if global && !options[:template]
+          raise 'You should provide :template when use rabl with global variables'
+        end
+
+        include_helpers
+
+        data = parse_rabl \
+          Gon::Base.get_template_path(options, 'rabl'),
+          Gon::Base.get_controller(options)
+
+        [data, options]
+      end
+
+      private
+
       def parse_rabl(rabl_path, controller)
         source = File.read(rabl_path)
         rabl_engine = ::Rabl::Engine.new(source, :format => 'json')
         output = rabl_engine.render(controller, {})
         JSON.parse(output)
+      end
+
+      def parse_options_from(args, global)
+        if old_api? args
+          unless global
+            text =  "[DEPRECATION] view_path argument is now optional. "
+            text << "If you need to specify it, "
+            text << "please use gon.rabl(:template => 'path')"
+            warn text
+          end
+
+          args.extract_options!.merge(:template => args[0])
+        elsif new_api? args
+          args.first
+        else
+          {}
+        end
+      end
+
+      def include_helpers
+        unless ::Rabl::Engine.include? ::ActionView::Helpers
+          ::Rabl::Engine.send(:include, ::ActionView::Helpers)
+        end
+      end
+
+      def old_api?(args)
+        args.first.is_a? String
+      end
+
+      def new_api?(args)
+        args.first.is_a? Hash
       end
 
     end
   end
 end