#36348: ManifestStaticFilesStorage breaks CSS containing data: URIs with
multiple
nested url()s
-------------------------------------+-------------------------------------
Reporter: Samuel Cormier- | Owner: Samuel
Iijima | Cormier-Iijima
Type: Bug | Status: closed
Component: contrib.staticfiles | Version: 5.2
Severity: Normal | Resolution: invalid
Keywords: | Triage Stage:
| Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Natalia Bidart):
* resolution: => invalid
* status: assigned => closed
Comment:
Hello Samuel Cormier-Iijima, thank you for your ticket. I wasn't able to
find documentation supporting the validity of the provided CSS. Based on
what I've found:
1. The `data:image/svg+xml` scheme allows embedding SVGs directly, but the
correct format looks like this: `background-image:
url("data:image/svg+xml;charset=utf-8,<svg>...</svg>");`. See
[https://developer.mozilla.org/en-
US/docs/Web/CSS/url_function?utm_source=chatgpt.com#using_a_data_url MDN
documentation] for reference.
2. It seems the CSS is attempting to apply multiple filters within the SVG
via the filter attribute in the data URL. However, I don't believe this is
valid SVG syntax. In SVG, filters are defined within the `<defs>` element
and then applied using a single filter attribute on a specific SVG
element. See [https://developer.mozilla.org/en-
US/docs/Web/SVG/Reference/Attribute/filter filter attribute] and
[https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Element/filter
filter element] docs.
Could you provide a failing test using valid CSS? I'll close this ticket
as `invalid` for now, as I’m not convinced this is a Django issue. Feel
free to reopen it with more information or a reproducible example using
valid syntax. Also I would advice reaching out to the
[https://forum.djangoproject.com/ Django Forum] for getting further
assistance and confirming this is indeed a Django issue.
--
Ticket URL: <https://code.djangoproject.com/ticket/36348#comment:4>
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