#12064: Impossible to conditionally include potentially non-existant templates
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Reporter: | Owner: nobody
mkruisselbrink | Status: new
Type: New | Component: Template system
feature | Severity: Normal
Milestone: | Keywords:
Version: 1.1 | Has patch: 1
Resolution: | Needs tests: 1
Triage Stage: Design | Easy pickings: 0
decision needed |
Needs documentation: 0 |
Patch needs improvement: 0 |
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Changes (by mrmachine):
* easy: => 0
Comment:
See also #16147
I believe that the behaviour of `{% include %}` as it stands is both
inconsistent between development (`TEMPLATE_DEBUG = True`) and production
environments, but also within the tag itself depending on the type of
argument passed to it. These inconsistencies have shown themselves in a
few different buggy (or at least unexpected) ways that are not always easy
to trace.
If including a non-existent template is worth raising TemplateDoesNotExist
in a development environment, it should not fail silently in a production
environment. The exception should also be raised there and redirected to
admins via Django's logging.
If including a non-existent template should fail silently when the
template does not exist, it should do so both for includes that have a
literal string argument or a variable, and it should do so both in
development and production environments.
I don't really have a firm opinion on whether or not including missing
templates should always fail silently or loudly, although I believe the
most common and expected behaviour currently is to fail silently so there
may be backwards incompatible issues in changing that. But I do believe
that the `{% include %}` tag should work it's magic at render time for
both literal and variable arguments. I consider the currently
(undocumented) difference in behaviour to be buggy or at the very least,
surprising.
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Ticket URL: <https://code.djangoproject.com/ticket/12064#comment:10>
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