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[Doug Hellmann <doug@xxxxxxxxxxxxxxxx>]

This issue was fixed in the openstack/horizon 9.0.0.0b1 development
milestone.

** Changed in: horizon
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1403094

Title:
  PANEL_GROUP="default" in enabled file no longer working in Juno

Status in OpenStack Dashboard (Horizon):
  Fix Released

Bug description:
  Using:

  PANEL_DASHBOARD = 'settings'
  PANEL = 'mypanel'
  PANEL_GROUP = "default"
  ADD_PANEL = 'mypackage.foo.bar.MyPanel'

  Will result in the new panel being added to the "Other" panel group
  instead of to the default panelgroup as documented
  (http://docs.openstack.org/developer/horizon/topics/settings.html
  #panel-group).

  This worked fine in icehouse, it looks like this is a regression.

  In particular, the following line is throwing an exception (Could not process panel mypanel: type object 'PanelGroup' has no attribute 'panels') because the default panelgroup's __class__ has no panels attribute:
  https://github.com/openstack/horizon/blame/stable/juno/horizon/base.py#L893

  Proposed fix: Add the following line on after https://github.com/openstack/horizon/blame/stable/juno/horizon/base.py#L293
  self.__class__.panels = self.panels

  A fix in Juno would be nice, because this break existing extensions.

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