Jsonify reponds with http cache header of the actual source uri

lib/jsonify.rb

@@ -7,7 +7,8 @@ def initialize(route, model)
   def call(env)
     path = env['REQUEST_PATH']
     response = path == @route ? all : one(find_id(path))
-    [200, {"Content-Type" => "application/json"}, [response]]
+    header = @model.http_cache_header.merge("Content-Type" => "application/json")
+    [200, header, [response]]
   end
 
   private
@@ -23,4 +24,4 @@ def one(id)
   def find_id(path)
     path[path.rindex('/') + 1, path.size]
   end
-end
+end

spec/jsonify_spec.rb

@@ -2,6 +2,11 @@
 require 'test_models'
 
 describe Jsonify do
+  before do
+    ::Pizza.stubs(:http_cache_header).returns("cache-control" => "private")
+    ::Pizza.stubs(:all).returns([])
+  end
+
   it "should find all objects and convert to json for index url" do
     pizzas = [{name: 'cheese'}, {name: 'chicken'}]
     ::Pizza.expects(:all).returns(pizzas)
@@ -25,4 +30,12 @@
     header['Content-Type'].should == 'application/json'
     response.first.should == pizza.to_json
   end
-end
+
+  it "should forward the http cache headers" do
+    ::Pizza.expects(:http_cache_header).returns("cache-control"=>"private")
+
+    jsonify = Jsonify.new('/pizzas', ::Pizza)
+    status, header, response = jsonify.call('REQUEST_PATH' => '/pizzas')
+    header['cache-control'].should == "private"
+  end
+end