As of Queens cycle, this cannot be reproduced.

** Changed in: horizon
       Status: In Progress => Invalid

** Changed in: horizon
     Assignee: Yakup Adakli (yakupa) => (unassigned)

** Tags removed: newton-backport-potential

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https://bugs.launchpad.net/bugs/1631181

Title:
  Deleting a subnet from the network topology graph throws
  NotImplementedError

Status in OpenStack Dashboard (Horizon):
  Invalid

Bug description:
  When deleting a subnet from the network topology graph, a
  NotImplementedError will be thrown. Here is a copy of the stack trace
  from my local environment:

  2016-10-06 22:05:46.636069 Internal Server Error: 
/dashboard/project/network_topology/network/9205cb37-623a-41b3-bfd5-afb828e12485/
  2016-10-06 22:05:46.636391 Traceback (most recent call last):
  2016-10-06 22:05:46.636695   File 
"/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 
132, in get_response
  2016-10-06 22:05:46.636976     response = wrapped_callback(request, 
*callback_args, **callback_kwargs)
  2016-10-06 22:05:46.637419   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/decorators.py", line 
36, in dec
  2016-10-06 22:05:46.637598     return view_func(request, *args, **kwargs)
  2016-10-06 22:05:46.637933   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/decorators.py", line 
52, in dec
  2016-10-06 22:05:46.638102     return view_func(request, *args, **kwargs)
  2016-10-06 22:05:46.638341   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/decorators.py", line 
36, in dec
  2016-10-06 22:05:46.638572     return view_func(request, *args, **kwargs)
  2016-10-06 22:05:46.638881   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/decorators.py", line 
84, in dec
  2016-10-06 22:05:46.639305     return view_func(request, *args, **kwargs)
  2016-10-06 22:05:46.639657   File 
"/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py", line 65, 
in view
  2016-10-06 22:05:46.639955     self = cls(**initkwargs)
  2016-10-06 22:05:46.640112   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/tabs/views.py", line 
87, in __init__
  2016-10-06 22:05:46.640347     super(TabbedTableView, self).__init__(*args, 
**kwargs)
  2016-10-06 22:05:46.640668   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/tables/views.py", 
line 34, in __init__
  2016-10-06 22:05:46.640892     self.get_data_methods(self.table_classes, 
self._data_methods)
  2016-10-06 22:05:46.641167   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/tables/views.py", 
line 61, in get_data_methods
  2016-10-06 22:05:46.641419     name)
  2016-10-06 22:05:46.641568   File 
"/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/tables/views.py", 
line 78, in check_method_exist
  2016-10-06 22:05:46.641874     "in %s." % (func_name, cls_name))
  2016-10-06 22:05:46.641913 NotImplementedError: You must define a 
get_subnets_data method in NetworkDetailView.

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