Fix #196: root requests don't work with prefix.

CHANGELOG.markdown

@@ -15,7 +15,7 @@
 * [#133](https://github.com/intridea/grape/issues/133): The value of `env['PATH_INFO']` is no longer altered with `path` versioning - [@dblock](https://github.com/dblock).
 * [#280](https://github.com/intridea/grape/issues/280): Fix: grouped parameters mangled in `route_params` hash - [@marcusg](https://github.com/marcusg), [@dblock](https://github.com/dblock).
 * [#304](https://github.com/intridea/grape/issues/304): Fix: `present x, :with => Entity` returns class references with `format :json` - [@dblock](https://github.com/dblock).
-
+* [#196](https://github.com/intridea/grape/issues/196): Fix: root requests don't work with `prefix` - [@dblock](https://github.com/dblock).
 * Your contribution here.
 
 0.2.3 (24/12/2012)

lib/grape/endpoint.rb

@@ -110,7 +110,7 @@ def prepare_routes
 
     def prepare_path(path)
       parts = []
-      parts << settings[:root_prefix] if settings[:root_prefix]
+      parts << settings[:root_prefix].to_s.split("/") if settings[:root_prefix]
 
       uses_path_versioning = settings[:version] && settings[:version_options][:using] == :path
       namespace_is_empty = namespace && (namespace.to_s =~ /^\s*$/ || namespace.to_s == '/')
@@ -119,11 +119,12 @@ def prepare_path(path)
       parts << ':version' if uses_path_versioning
       if !uses_path_versioning || (!namespace_is_empty || !path_is_empty)
         parts << namespace.to_s if namespace
-        parts << path.to_s if path && '/' != path
+        parts << path.to_s if path
         format_suffix = '(.:format)'
       else
         format_suffix = '(/.:format)'
       end
+      parts = parts.flatten.select { |part| part != '/' }
       Rack::Mount::Utils.normalize_path(parts.join('/') + format_suffix)
     end
 

spec/grape/api_spec.rb

@@ -7,6 +7,17 @@
   def app; subject end
 
   describe '.prefix' do
+
+    it 'routes root through with the prefix' do
+      subject.prefix 'awesome/sauce'
+      subject.get do
+        "Hello there."
+      end
+
+      get 'awesome/sauce/'
+      last_response.body.should eql "Hello there."
+    end
+
     it 'routes through with the prefix' do
       subject.prefix 'awesome/sauce'
       subject.get :hello do
@@ -19,6 +30,7 @@ def app; subject end
       get '/hello'
       last_response.status.should eql 404
     end
+
   end
 
   describe '.version' do