Cannot launch Dashboard due to Import error

[Senhua Huang]

After $stack.sh completes, I tried to launch Dashboard and got the following error at Horizon:

ImportError at /

cannot import name is_safe_url

Request Method: GET
Request URL: http://192.168.149.128/
Django Version: 1.4.2
Exception Type: ImportError
Exception Value:

cannot import name is_safe_url

Exception Location: /usr/local/lib/python2.7/dist-packages/openstack_auth/views.py in <module>, line 13
Python Executable: /usr/bin/python
Python Version: 2.7.3
Python Path:

['/opt/stack/horizon/openstack_dashboard/wsgi/../..',
 '/opt/stack/cinder',
 '/usr/local/lib/python2.7/dist-packages/setuptools_git-0.4.2-py2.7.egg',
 '/opt/stack/python-novaclient',
 '/opt/stack/python-openstackclient',
 '/opt/stack/keystone',
 '/opt/stack/glance',
 '/opt/stack/python-glanceclient',
 '/opt/stack/nova',
 '/opt/stack/horizon',
 '/opt/stack/python-keystoneclient',
 '/opt/stack/python-cinderclient',
 '/usr/local/lib/python2.7/dist-packages/oslo.config-1.1.0b1-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/distribute-0.6.35-py2.7.egg',
 '/opt/stack/quantum',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-linux2',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages/PIL',
 '/usr/lib/python2.7/dist-packages/gst-0.10',
 '/usr/lib/python2.7/dist-packages/gtk-2.0',
 '/usr/lib/pymodules/python2.7',
 '/usr/lib/python2.7/dist-packages/ubuntu-sso-client',
 '/usr/lib/python2.7/dist-packages/ubuntuone-client',
 '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel',
 '/usr/lib/python2.7/dist-packages/ubuntuone-couch',
 '/usr/lib/python2.7/dist-packages/ubuntuone-installer',
 '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol',
 '/opt/stack/horizon/openstack_dashboard']

[Davanum Srinivas (DIMS) (dims-v)]

I am going to try Django 1.4.3 (looks like is_safe_url was added there - https://www.djangoproject.com/weblog/2012/dec/10/security/)

"pip install django==1.4.3"

[Davanum Srinivas (DIMS) (dims-v)]

yep, that did the trick. needs specific versions as mentioned in the url

[Senhua Huang (senhuang)]

confirmed. Thank you, Davanum! By the way, if your pip install times out, try "pip --default-timeout=60 install django==1.4.3".

[Tihomir Trifonov (ttrifonov)]

IMHO this is not a Devstack error. The problem is in tools/pip-requires in Horizon - it says

    Django>=1.4,<1.5

should be:

    Django>=1.4.3,<1.5

As pointed above - Horizon uses is_safe_url which is added in Django 1.4.3. Fixing the pip-requires line fixes the problem.

[Tihomir Trifonov (ttrifonov)]

Oops, my bad. Just saw the import is in openstack_auth. So openstack_auth should require >=1.4.3, not Horizon.

[Kieran Spear (kspear)]

Fix here:
https://github.com/gabrielhurley/django_openstack_auth/pull/27

I've tried to maintain compatibility with older django versions.

[Thierry Carrez (ttx)]

Fix is in django_openstack_auth, not in horizon... so marking horizon task invalid

Should we handle this library as an openstack project ?