#34239: Resolve load type-hinted objects in views
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Reporter: maldoinc | Owner: nobody
Type: New feature | Status: new
Component: Generic views | Version: dev
Severity: Normal | Resolution:
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Description changed by maldoinc:
Old description:
> In this ticket I'd like to propose a new feature which loads models from
> parameter information. A common pattern in views is to have a primary key
> or candidate key to locate a specific record via get_object_or_404.
>
> What I'd like to propose is to allow users to type-hint a specific
> parameter and have django load the object automatically or throw 404 if
> it doesn't exist.
>
> {{{
> #!div style="font-size: 80%"
> {{{#!python
> # url pattern for this view: posts/<post>/
> # the argument name matches the url variable.
> def some_view(request, post: Post):
> pass
> }}}
> }}}
>
> This feature would also work if there are multiple objects being loaded
> in the same view.
> Currently in our repository we do this via a decorator, but I feel that
> this would be a helpful feature that can be merged into core as it
> reduces the amount of boilerplate.
>
> This feature is inspired from a similar one in Symfony framework.
> https://symfony.com/doc/current/doctrine.html#doctrine-entity-value-
> resolver
>
> Looking forward to your thoughts. I can also supply the implementation
> for this if we decide it is worth adding.
New description:
In this ticket I'd like to propose a new feature which loads models from
parameter information. A common pattern in views is to have a primary key
or candidate key to locate a specific record via get_object_or_404.
What I'd like to propose is to allow users to type-hint a specific
parameter and have django load the object automatically by pk or throw 404
if it doesn't exist.
{{{
#!div style="font-size: 80%"
{{{#!python
# url pattern for this view: posts/<post>/
# the argument name matches the url variable.
def some_view(request, post: Post):
pass
}}}
}}}
This feature would also work if there are multiple objects being loaded in
the same view.
Currently in our repository we do this via a decorator, but I feel that
this would be a helpful feature that can be merged into core as it reduces
the amount of boilerplate.
This feature is inspired from a similar one in Symfony framework.
https://symfony.com/doc/current/doctrine.html#doctrine-entity-value-
resolver
Looking forward to your thoughts. I can also supply the implementation for
this if we decide it is worth adding.
--
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Ticket URL: <https://code.djangoproject.com/ticket/34239#comment:2>
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