From 8019e117f849715591da3e244c8a712c797ade8a Mon Sep 17 00:00:00 2001
From: bmizerany <blake.mizerany@gmail.com>
Date: Thu, 29 Jan 2009 19:37:20 -0800
Subject: [PATCH] Sugar added:  redirect back

---
 lib/sinatra/base.rb |  4 ++++
 test/base_test.rb   | 13 +++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/lib/sinatra/base.rb b/lib/sinatra/base.rb
index 82db2a59..dc197afa 100644
--- a/lib/sinatra/base.rb
+++ b/lib/sinatra/base.rb
@@ -194,6 +194,10 @@ module Sinatra
         halt 304 if etags.include?(value) || etags.include?('*')
       end
     end
+
+    ## Sugar for redirect (example:  redirect back)
+    def back ; request.referer ; end
+
   end
 
   module Templates
diff --git a/test/base_test.rb b/test/base_test.rb
index a6ba62cf..137c056c 100644
--- a/test/base_test.rb
+++ b/test/base_test.rb
@@ -65,4 +65,17 @@ describe 'Sinatra::Base' do
     assert response.ok?
     assert_equal 'not foo', response.body
   end
+
+  it "makes redirecting back pretty" do
+    app = mock_app {
+      get '/foo' do
+        redirect back
+      end
+    }
+
+    request  = Rack::MockRequest.new(app)
+    response = request.get('/foo', 'HTTP_REFERER' => 'http://github.com')
+    assert response.redirect?
+    assert_equal "http://github.com", response.location
+  end
 end