#34028: Django 'static' template tag fails to generate URLs with SCRIPT_NAME
prefix
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Reporter: Stewart Adam | Owner: nobody
Type: Bug | Status: new
Component: Template system | Version: 4.0
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by David Sanders):
* cc: David Sanders (added)
Comment:
I've been investigating `SCRIPT_NAME` / `FORCE_SCRIPT_NAME` and found some
interesting quirks when used with `runserver` which may be affecting
testing these issues (at least it was affecting me when investigating
#34185
I'm not entirely sure why yet but I'll post the following reproducible
issue (at least for me) to show that prefixing `STATIC_URL` works
intermittently due to a race condition with runserver and the multiple
processes setup with autoreload:
In `django/conf/__init__.py` I added a line to print the result of
prefixing `STATIC_URL`:
{{{
@staticmethod
def _add_script_prefix(value):
"""
Add SCRIPT_NAME prefix to relative paths.
Useful when the app is being served at a subpath and manually
prefixing
subpath to STATIC_URL and MEDIA_URL in settings is inconvenient.
"""
# Don't apply prefix to absolute paths and URLs.
if value.startswith(("http://";, "https://";, "/")):
return value
from django.urls import get_script_prefix
val = "%s%s" % (get_script_prefix(), value)
print("*********** PREFIXING ***********: " + val)
return val
}}}
The result when `runserver` is run with autoreload on then off:
{{{
sample-project % dj runserver
Watching for file changes with StatReloader
Performing system checks...
*********** PREFIXING ***********: /static/
System check identified no issues (0 silenced).
November 29, 2022 - 13:22:27
Django version 4.2.dev20221129074011, using settings
'django_sample.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
^C
django-sample % dj runserver --noreload
Performing system checks...
*********** PREFIXING ***********: /django/static/
System check identified no issues (0 silenced).
November 29, 2022 - 13:22:40
Django version 4.2.dev20221129074011, using settings
'django_sample.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
^C
sample-project %
}}}
Now the interesting thing is that I can get the same results without
specifying `--noreload` by just adding a line to `print()` in `setup()` !
:)
--
Ticket URL: <https://code.djangoproject.com/ticket/34028#comment:8>
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