JSONP support

README.markdown

@@ -91,7 +91,7 @@ And viewing the service in your browser: <a href="http://localhost:5678/search?t
       }
     }
 
-The `/search` method supports multiple `types` as well as an optional `limit`. For example: `http://localhost:5678/search?types[]=event&types[]=venue&types[]=performer&limit=3&term=yank`.
+The `/search` method supports multiple `types` as well as an optional `limit`. For example: `http://localhost:5678/search?types[]=event&types[]=venue&types[]=performer&limit=3&term=yank`. You can also add the `callback` parameter to enable JSONP output.
 
 Contributing to soulmate
 ------------------------

lib/soulmate/server.rb

@@ -6,8 +6,14 @@ module Soulmate
   class Server < Sinatra::Base
     include Helpers
 
-    before do
-      content_type 'application/json', :charset => 'utf-8'
+    def handle_jsonp(data)
+      if params[:callback]
+        content_type 'text/javascript', :charset => 'utf-8'
+        "#{params[:callback]}(#{data})"
+      else
+        content_type 'application/json', :charset => 'utf-8'
+        data
+      end
     end
 
     get '/' do
@@ -27,15 +33,14 @@ class Server < Sinatra::Base
         results[type] = matcher.matches_for_term(term, :limit => limit)
       end
 
-      JSON.pretty_generate({
+      handle_jsonp JSON.pretty_generate({
         :term    => params[:term],
         :results => results
       })
     end
 
     not_found do
-      content_type 'application/json', :charset => 'utf-8'
-      JSON.pretty_generate({ :error => "not found" })
+      handle_jsonp JSON.pretty_generate({ :error => "not found" })
     end
 
   end