1 files changed, 28 insertions, 0 deletions
diff --git a/pecan/util.py b/pecan/util.py
index aa2e683..168ff66 100644
--- a/pecan/util.py
+++ b/pecan/util.py
@@ -1,10 +1,38 @@
+import inspect
 import sys
 
+import six
+
 
 def iscontroller(obj):
     return getattr(obj, 'exposed', False)
 
 
+def getargspec(method):
+    """
+    Drill through layers of decorators attempting to locate the actual argspec
+    for a method.
+    """
+
+    argspec = inspect.getargspec(method)
+    args = argspec[0]
+    if args and args[0] == 'self':
+        return argspec
+    if hasattr(method, '__func__'):
+        method = method.__func__
+
+    func_closure = six.get_function_closure(method)
+
+    closure = next(
+        (
+            c for c in func_closure if six.callable(c.cell_contents)
+        ),
+        None
+    )
+    method = closure.cell_contents
+    return getargspec(method)
+
+
 def _cfg(f):
     if not hasattr(f, '_pecan'):
         f._pecan = {}