http: Switch to HTTP method dispatcher for /api

mopidy/frontends/http/actor.py

@@ -57,6 +57,9 @@ class HttpFrontend(pykka.ThreadingActor, CoreListener):
                 'tools.staticdir.index': 'index.html',
                 'tools.staticdir.dir': static_dir,
             },
+            '/api': {
+                'request.dispatch': cherrypy.dispatch.MethodDispatcher(),
+            },
             '/ws': {
                 'tools.websocket.on': True,
                 'tools.websocket.handler_cls': ws.WebSocketHandler,

mopidy/frontends/http/api.py

@@ -7,12 +7,13 @@ except ImportError as import_error:
 
 
 class ApiResource(object):
+    exposed = True
+
     def __init__(self, core):
         self.core = core
 
-    @cherrypy.expose
     @cherrypy.tools.json_out()
-    def index(self):
+    def GET(self):
         playback_state = self.core.playback.state.get()
         track = self.core.playback.current_track.get()
         if track: