Use a more reliable source of the static files URL

[illia-v]

I have a case when SQL explorer pages don't render correctly because paths of all static files are wrong.

django-storages is used and AWS_LOCATION is set, so actual paths are prefixed.
The SQL explorer uses settings.STATIC_URL to construct URLs of static files, but settings.STATIC_URL doesn't contain the prefix in the described configuration.

There may be other cases when storage classes change URLs, let's build the URLs using a configured Django storage.

[chrisclark]

Love this! Thank you.

I have struggled to get all of the various django static stuff to be really solid, and I think this helps. I will review shortly, merge, and get a beta release out by the end of this week (along with a bunch of other improvements). I'll get it tested in a more complex environment next week and hopefully have a final release done by Aug 2.

[illia-v]

@chrisclark thank you for reviewing this and providing the expected release date!

[chrisclark]

@illia-v FYI 5.1b1 is on pypi:
https://pypi.org/project/django-sql-explorer/5.1b1/

Will try to cut a final release sometime in the coming week.

[chrisclark]

I have tested this on demo.sqlexplorer.io, with similar django-storages settings:

https://github.com/explorerhq/demo-site/blob/master/explorer_demo/settings.py

And it seems to be working well. I will cut a release tomorrow after one more round of testing in another environment.

[illia-v]

Thanks! I checked the beta release in my env, and it works correctly there too