Error in admin/base_site.html when using ManifestStaticFilesStorage

[gavinwahl]

base_site.html has this code: window.__admin_media_prefix__ = '{% static "admin" %}/';, which tries to get the URL of a static file that doesn't exist ('admin'). This causes ManifestStaticFilesStorage to raise an error:

  File "django/contrib/staticfiles/storage.py", line 432, in stored_name
    raise ValueError("Missing staticfiles manifest entry for '%s'" % clean_name)
ValueError: Missing staticfiles manifest entry for 'admin'

[stephenmcd]

Which version? Should have been fixed in 4.3, see #1772

I'll close assuming it's fixed, please re-open if not.

[gavinwahl]

This exists on master. #1772 is an unrelated issue.

[stephenmcd]

Sorry I knew this was a duplicate issue but when I searched I linked to the wrong one - the dupe is #1805.

I still feel like it's the fault of any staticfiles backend to not give a valid path for a directory, and I closed the original issue off since the backend in question was third-party. What do you think of the likelihood of getting this changed in Django for the backend you're using?

[gavinwahl]

It doesn't work to build URLs to static files with a prefix. A filename like foo.css will get turned into a file like foo.3a393a.css in production, so the staticfiles backend needs to know the exact file and can't generate a prefix for you.

[stephenmcd]

That makes sense, I just think that a statcfiles backend should be able to produce a path to a directory. We'll need to add something ourselves that does this in order to fix it.

[bors-ltd]

Landing here because I got bitten by this with Mezzanine 4.3.1.

I just think that a statcfiles backend should be able to produce a path to a directory.

I strongly disagree, there is no notion of directories (or even files) on the Web, only resources with URLs that produce representations.

It goes against the staticfiles API in Django.

__admin_media_prefix__ seems unused anyway, I'll override the template in my project.

[jerivas]

The fix proposed in #1938 has been added separately