Commit 50fb8a87 by Dudás Ádám

common: better error on missing attribute

parent 32065c91
......@@ -135,7 +135,14 @@ def register_operation(target_cls, op_cls, op_id=None):
otherwise, the operation class' 'id' attribute will be used.
if op_id is None:
op_id =
op_id =
except AttributeError:
raise NotImplementedError("Operations should specify an 'id' "
"attribute designating the name the "
"operation can be called by on its "
"host. Alternatively, provide the name "
"in the 'op_id' parameter to this call.")
if not issubclass(target_cls, OperatedMixin):
raise TypeError("%r is not a subclass of %r" %
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