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[Timur Sufiev <tsufiev@xxxxxxxxxxxx>]

Yes, it was my fault - I was importing some module from horizon. instead
of openstack_dashboard.

** Changed in: horizon
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1271151

Title:
  Unable to include openstack_dashboard.settings in other top-level
  django settings module

Status in OpenStack Dashboard (Horizon):
  Invalid

Bug description:
  In order to augment openstack_dashboard.settings with specific django
  application settings (namely, Murano) while editing neither
  openstack_dashboard.settings (it contains only settings related to
  vanilla openstack dashboards), nor
  /etc/openstack_dashoards/local_settings.py (it is for customization by
  admins) the following scheme was devised.  Change
  DJANGO_SETTINGS_MODULE in Apache config/WSGI python module to
  'muranodashboard.settings' which contains all Murano-specific settings
  and imports openstack_dashboard.settings, which in turn imports
  local.local_settings. This approach seemed fine until I coded it and
  ran: it immediately failed with 'ImproperlyConfigured: The SECRET_KEY
  setting must not be empty.' exception.

  After spending some time in debugger, I found out that during
  'openstack_dashboard.settings' module evaluation
  'django.conf.Settings' class is instantiated and it requires the
  'SECRET_KEY' parameter to be present in settings module referenced by
  DJANGO_SETTINGS_MODULE environment variable (which, in my case is
  'muranodashboard.settings'). But if I try to avoid this error and
  define my own SECRET_KEY in 'muranodashboard.settings', I end up with
  2 different SECRET_KEY values (one from muranodashboard.settings, the
  other hanging somewhere in horizon's machinery from
  local.local_settings / openstack_dashboard.settings) which is not good
  either.

  This behaviour clearly seems like a bug, because
  openstack_dashboard.settings shouldn't invoke functions that rely on
  SECRET_KEY being already defined in DJANGO_SETTINGS_MODULE module.

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