The __admin_media_prefix__ is used in
contrib/admin/static/admin/js/admin/DateTimeShortcuts.js to form URLs by
concatenation:
DateTimeShortcuts.admin_media_prefix + 'img/icon_clock.gif'
This causes a problem with certain storage backends (such as S3 Boto)
which include authentication digests as part of the URL. For instance,
when using the S3 Boto backend, my admin renders the following line:
<script type="text/javascript">window.__admin_media_prefix__ =
"https://oca3\u002Dqa.s3.amazonaws.com/admin?Signature\u003DXIt%2FCc9wPWjaw%2F3ITNjkYE3bc%2FI%3D\u0026Expires\u003D1356844210\u0026AWSAccessKeyId\u003DAKIAIGREZ7J53KZ23QKQ";</script>
Which, when concatenated with the fixed string generates the invalid URL:
https://oca3\u002Dqa.s3.amazonaws.com/admin?Signature\u003DXIt%2FCc9wPWjaw%2F3ITNjkYE3bc%2FI%3D\u0026Expires\u003D1356844210\u0026AWSAccessKeyId\u003DAKIAIGREZ7J53KZ23QKQimg/icon_clock.gif
I suspect that the assumption the DateTime widget is relying on ({% static
a+b %} should be equivelant to {% static a %}b) is invalid, and it should
be using a more robust method to determine the static URL of its
resources. The DateTime widget appears to be the only element depending on
__admin_media_prefix__, and thus the only one to fail when switching to a
backend that doesn't support its assumption.
--
Ticket URL: <https://code.djangoproject.com/ticket/19538>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
* needs_better_patch: => 0
* needs_tests: => 0
* needs_docs: => 0
Old description:
> contrib/admin/templates/admin/base.html contains the line:
> <script type="text/javascript">window.__admin_media_prefix__ = "{% filter
> escapejs %}{% static "admin/" %}{% endfilter %}";</script>
>
> The __admin_media_prefix__ is used in
> contrib/admin/static/admin/js/admin/DateTimeShortcuts.js to form URLs by
> concatenation:
> DateTimeShortcuts.admin_media_prefix + 'img/icon_clock.gif'
>
> This causes a problem with certain storage backends (such as S3 Boto)
> which include authentication digests as part of the URL. For instance,
> when using the S3 Boto backend, my admin renders the following line:
> <script type="text/javascript">window.__admin_media_prefix__ =
> "https://oca3\u002Dqa.s3.amazonaws.com/admin?Signature\u003DXIt%2FCc9wPWjaw%2F3ITNjkYE3bc%2FI%3D\u0026Expires\u003D1356844210\u0026AWSAccessKeyId\u003DAKIAIGREZ7J53KZ23QKQ";</script>
>
> Which, when concatenated with the fixed string generates the invalid URL:
> https://oca3\u002Dqa.s3.amazonaws.com/admin?Signature\u003DXIt%2FCc9wPWjaw%2F3ITNjkYE3bc%2FI%3D\u0026Expires\u003D1356844210\u0026AWSAccessKeyId\u003DAKIAIGREZ7J53KZ23QKQimg/icon_clock.gif
>
> I suspect that the assumption the DateTime widget is relying on ({%
> static a+b %} should be equivelant to {% static a %}b) is invalid, and it
> should be using a more robust method to determine the static URL of its
> resources. The DateTime widget appears to be the only element depending
> on __admin_media_prefix__, and thus the only one to fail when switching
> to a backend that doesn't support its assumption.
New description:
contrib/admin/templates/admin/base.html contains the line:
{{{
<script type="text/javascript">window.__admin_media_prefix__ = "{% filter
escapejs %}{% static "admin/" %}{% endfilter %}";</script>
}}}
The !__admin_media_prefix!__ is used in
contrib/admin/static/admin/js/admin/DateTimeShortcuts.js to form URLs by
concatenation:
DateTimeShortcuts.admin_media_prefix + 'img/icon_clock.gif'
This causes a problem with certain storage backends (such as S3 Boto)
which include authentication digests as part of the URL. For instance,
when using the S3 Boto backend, my admin renders the following line:
{{{
<script type="text/javascript">window.__admin_media_prefix__ =
"https://oca3\u002Dqa.s3.amazonaws.com/admin?Signature\u003DXIt%2FCc9wPWjaw%2F3ITNjkYE3bc%2FI%3D\u0026Expires\u003D1356844210\u0026AWSAccessKeyId\u003DAKIAIGREZ7J53KZ23QKQ";</script>
}}}
Which, when concatenated with the fixed string generates the invalid URL:
https://oca3\u002Dqa.s3.amazonaws.com/admin?Signature\u003DXIt%2FCc9wPWjaw%2F3ITNjkYE3bc%2FI%3D\u0026Expires\u003D1356844210\u0026AWSAccessKeyId\u003DAKIAIGREZ7J53KZ23QKQimg/icon_clock.gif
I suspect that the assumption the DateTime widget is relying on ({% static
a+b %} should be equivelant to {% static a %}b) is invalid, and it should
be using a more robust method to determine the static URL of its
resources. The DateTime widget appears to be the only element depending on
!__admin_media_prefix!__, and thus the only one to fail when switching to
a backend that doesn't support its assumption.
--
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:1>
* type: Uncategorized => Bug
* component: Uncategorized => contrib.admin
* stage: Unreviewed => Accepted
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:2>
* status: new => assigned
* owner: nobody => garanko
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:3>
Comment (by claudep):
#21395 has been marked as a duplicate.
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:4>
Comment (by wraus@…):
Has there been any progress on this? This is causing some issues for me,
since I'm looking to switch over to S3. Technically everything still
works, but there shouldn't be broken images in the admin just because I
want to use S3.
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:5>
* version: 1.4 => master
* owner: garanko => timgraham
* needs_docs: 0 => 1
* has_patch: 0 => 1
* type: Bug => Cleanup/optimization
Comment:
We can address this by moving image references to CSS and using relative
paths.
[https://github.com/django/django/pull/4236 Work in progress]
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:6>
* needs_docs: 1 => 0
Comment:
Addressed todos; ready for review now.
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:7>
* stage: Accepted => Ready for checkin
Comment:
I don't want to rush it, but the PR looks good.
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:8>
* status: assigned => closed
* resolution: => fixed
Comment:
In [changeset:"d61ebc8fed212366340b1ed6f5d7722613801459"]:
{{{
#!CommitTicketReference repository=""
revision="d61ebc8fed212366340b1ed6f5d7722613801459"
Fixed #19538 -- Removed window.__admin_media_prefix__ from admin
templates.
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/19538#comment:9>