Django Compress causes errors

[RumitAP]

When I try to compress my project down, the static files within the django-advanced-filters causes errors.

To Reproduce
Steps to reproduce the behavior:

1. Go to the root of external project in terminal
2. python manage.py collectstatic
3. python manage.py compress --force
4. See error

Error parsing template /home/rap/.local/lib/python3.8/site-packages/advanced_filters/templates/admin/advanced_filters.html: Invalid template name in 'extends' tag: ''. Got this from the 'original_change_list_template' variable.
done

Expected behavior
It should be able to compress these files down.

Details (please complete the following information):

• OS: Ubuntu 22.04
• Python version 3.8
• Django version: 3.2.15
• django-advanced-filters version: 1.3.0 (upgraded to latest and same error)
• Browser : N/A but chrome
• Version [e.g. 22]

Additional context
Add any other context about the problem here, including traceback and additional log files.

[RumitAP]

erielias@gmail.com

[vitormhenrique]

Just made a PR to fix the issue: #189

[asfaltboy]

I haven't used django-compress in a while, but as far as I can tell it will not do much with Django's admin templates, unless you use the {% compress %} tag into your templates.

I can't see a setting to skip apps, might be a question for django-compress maintainers. Though, if you are providing a custom change list template, or otherwise wish to compress the resources in the admin site, set your COMPRESS_OFFLINE_CONTEXT to the template name. E.g:

COMPRESS_OFFLINE_CONTEXT = {
    "original_change_list_template": "admin/change_list.html"
}

@vitormhenrique thanks for your contribution. I can see your PR changes the template to default to the default django admin template, but the existence of the variable original_change_list_template is there in the first place to allow users to set ModelAdmin.change_list_template to their own custom value, i.e a different template, as per django-admin API.

For more details see:

1. Django's docs for reference.
2. Django compress: usage
3. Django compress: offlien compression caveats

[vitormhenrique]

Hello @asfaltboy
The idea of the PR was indeed to give a default value in the case of original_change_list_template is null.

So it still allow users to use a different template but "forces" a default value. I noticed other apps had the same issue with compressor and they all fixed like this, that is why I went this route.

I will try to use the COMPRESS_OFFLINE_CONTEXT but for someone using the app without digging into the source code would be difficult to know all the custom templates that would need to default to get the app working with compressor.

Thank you for your reply, I'll do more digging and let you know!

[asfaltboy]

That's fair @vitormhenrique, I've merged your fix PR, please let me know if this fixes the issue for you and @RumitAP