Use functools.wraps on the functions returned by our decorators

This lets Django report the correct view name in errors

(imported from commit b21347e7af39cda439125355f99f4fc63fc3bd2f)

zephyr/decorator.py

@@ -1,3 +1,5 @@
+from functools import wraps
+
 import types
 
 class TornadoAsyncException(Exception): pass
@@ -10,6 +12,7 @@ def returnResponse(value):
     raise _DefGen_Return(value)
 
 def asynchronous(method):
+    @wraps(method)
     def wrapper(request, *args, **kwargs):
         try:
             v = method(request, request._tornado_handler, *args, **kwargs)

zephyr/lib/cache.py

@@ -1,3 +1,5 @@
+from functools import wraps
+
 import django.core.cache
 
 def cache_with_key(keyfunc):
@@ -11,6 +13,7 @@ def cache_with_key(keyfunc):
     def decorator(func):
         djcache = django.core.cache.cache
 
+        @wraps(func)
         def func_with_caching(*args, **kwargs):
             key = keyfunc(*args, **kwargs)
             val = djcache.get(key)
@@ -36,6 +39,7 @@ def cache(func):
 
     func_uniqifier = '%s-%s' % (func.func_code.co_filename, func.func_name)
 
+    @wraps(func)
     def keyfunc(*args, **kwargs):
         # Django complains about spaces because memcached rejects them
         key = func_uniqifier + repr((args, kwargs))

zephyr/views.py

@@ -25,6 +25,8 @@ from zephyr.lib.avatar import gravatar_hash
 
 from confirmation.models import Confirmation
 
+from functools import wraps
+
 import datetime
 import simplejson
 import socket
@@ -38,6 +40,7 @@ import base64
 SERVER_GENERATION = int(time.time())
 
 def require_post(view_func):
+    @wraps(view_func)
     def _wrapped_view_func(request, *args, **kwargs):
         if request.method != "POST":
             return json_error('This form can only be submitted by POST.')
@@ -50,6 +53,7 @@ def require_post(view_func):
 def authenticated_api_view(view_func):
     @csrf_exempt
     @require_post
+    @wraps(view_func)
     def _wrapped_view_func(request, *args, **kwargs):
         try:
             user_profile = UserProfile.objects.get(user__email=request.POST.get("email"))
@@ -65,6 +69,7 @@ def authenticated_api_view(view_func):
 # redirecting to a login page doesn't make sense for json views)
 def authenticated_json_view(view_func):
     @require_post
+    @wraps(view_func)
     def _wrapped_view_func(request, *args, **kwargs):
         if not request.user.is_authenticated():
             return json_error("Not logged in")