#31154: Enumeration Types are not usable in templates.
-------------------------------------+-------------------------------------
Reporter: Adam (Chainz) | Owner: Adam
Johnson | (Chainz) Johnson
Type: Bug | Status: assigned
Component: Database layer | Version: 3.0
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by felixxm):
* severity: Normal => Release blocker
* component: Template system => Database layer (models, ORM)
* has_patch: 0 => 1
* stage: Unreviewed => Accepted
Old description:
> The new [enumeration
> types](https://docs.djangoproject.com/en/3.0/ref/models/fields
> /#enumeration-types) are great but can't be used in Django templates due
> to their being callable. For example this doesn't work:
>
> {{{
> {% if student.year_in_school == YearInSchool.FRESHMAN %}
> }}}
>
> This is because YearInSchool, being a class, is callable, and Django
> Templates always call callables with no arguments. The call fails because
> the required `value` argument is missing.
>
> The easy solution would be to declare `do_not_call_in_templates = True`
> on the various Choices classes.
New description:
The new [https://docs.djangoproject.com/en/3.0/ref/models/fields
/#enumeration-types enumeration types] are great but can't be used in
Django templates due to their being callable. For example this doesn't
work:
{{{
{% if student.year_in_school == YearInSchool.FRESHMAN %}
}}}
This is because YearInSchool, being a class, is callable, and Django
Templates always call callables with no arguments. The call fails because
the required `value` argument is missing.
The easy solution would be to declare `do_not_call_in_templates = True` on
the various Choices classes.
--
Comment:
[https://github.com/django/django/pull/12304 PR]
--
Ticket URL: <https://code.djangoproject.com/ticket/31154#comment:2>
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