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[Brian DeHamer <1291021@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

If an error is raised in either the DetailView or ResizeView (in
openstack_dashboard.dashboards.project.instances.views) we assume that a
redirect will be raised. However, certain exception classes will not
result in a redirect when handled by the standard Horizon exception
handler.

The problem spots are here
(https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/instances/views.py#L270)
and here
(https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/instances/views.py#L312).
If the error handler doesn't raise a redirect, control will be returned
to the statement after the 'except' block and the 'instance' variable
may be unbound.

** Affects: horizon
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1291021

Title:
  Unhandled UnboundLocalError in instance views

Status in OpenStack Dashboard (Horizon):
  New

Bug description:
  If an error is raised in either the DetailView or ResizeView (in
  openstack_dashboard.dashboards.project.instances.views) we assume that
  a redirect will be raised. However, certain exception classes will not
  result in a redirect when handled by the standard Horizon exception
  handler.

  The problem spots are here
  (https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/instances/views.py#L270)
  and here
  (https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/instances/views.py#L312).
  If the error handler doesn't raise a redirect, control will be
  returned to the statement after the 'except' block and the 'instance'
  variable may be unbound.

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