Revert to old MultiJson syntax.

CHANGELOG.md

@@ -1,7 +1,10 @@
 # CHANGELOG
 
+## 0.1.4 (Unreleased)
+  * Use MultiJson's preferred JSON engine as default
+
 ## 0.1.3
-  * Render correcly when variables are not passed via the assigns ivar but as helper methods
+  * Render correctly when variables are not passed via the assigns ivar but as helper methods
     (decent_exposure, focused_controller)
   * Add custom Responder
 
@@ -13,7 +16,7 @@
 ## 0.1.1
 
   * Add CHANGELOG
-  * Remove unnused test in loop
+  * Remove unused test in loop
   * Speed up rendering by not double copying variable from context
   * Rename private variable to avoid name conflict
   * Remove sqlite3 development dependency

lib/rabl-rails.rb

@@ -26,8 +26,6 @@ module RablRails
   mattr_accessor :include_json_root
   @@include_json_root = true
 
-  mattr_reader :json_engine
-
   mattr_accessor :use_custom_responder
   @@use_custom_responder = false
 
@@ -41,10 +39,13 @@ module RablRails
   end
 
   def self.json_engine=(name)
-    MultiJson.respond_to?(:use) ? MultiJson.use(name) : MultiJson.engine = name
-    @@json_engine = name
+    MultiJson.engine = name
   rescue LoadError
-    Rails.logger.warn %Q(WARNING: rabl-rails could not load "#{self.json_engine}" as JSON engine, fallback to default)
+    Rails.logger.warn %Q(WARNING: rabl-rails could not load "#{name}" as JSON engine, fallback to default)
+  end
+
+  def self.json_engine
+    MultiJson.engine
   end
 
   def self.cache_templates?
@@ -52,6 +53,6 @@ module RablRails
   end
 
   def self.load_default_engines!
-    self.json_engine = MultiJson.respond_to?(default_adapter) ? MultiJson.default_adapter : MultiJson.default_engine
+    self.json_engine = MultiJson.default_engine
   end
 end

lib/rabl-rails/renderers/json.rb

@@ -3,7 +3,7 @@ module RablRails
     class JSON < Base
       def format_output(hash)
         hash = { _options[:root_name] => hash } if _options[:root_name] && RablRails.include_json_root
-        MultiJson.respond_to?(:dump) ? MultiJson.dump(hash) : MultiJson.encode(hash)
+        MultiJson.encode(hash)
       end
     end
   end