Admin’s change list headers are “Select {model} to change”, “Select {model}
to view” or “Select {model}” (for pop-ups). We inject model’s verbose name
in that strings. It renders correct strings for most of the languages, but
not for those, which have grammatical cases [1] for nouns. Such languages
include Polish, Greek, Russian, Hungarian, Czech and many more.
I try to track how many of languages are affected for selected nouns in a
spreadsheet [2] with help of Google Translate.
To make the headers correct for this languages we should inject a verbose
name into “Select {}[…]” sentences in a correct grammatical case.
Effectively it is usually a word with changed ending comparing to a base
form of a noun (verbose name value).
I’d like to propose a backwards compatible way to support an ability to
provide a translation for a grammatical case of model’s verbose name and
“selecting” to use it in a translation string.
In short the implementation requires:
- switching from %-string formatting to format-strings in admin’s
changelist headers source strings,
- adding a class that will behave like string, but also let access it’s
attributes,
- leveraging accessing attributes in Python format-string syntax.
You can see here the implementation concluded in 7 commits:
https://github.com/django/django/compare/main...m-aciek:accusative-in-admin-header-approach-2
I don’t have enough means to confirm it for all languages, but my cursory
research says that probably the case used in “Select {}” sentence is an
*accusative* for all languages that have grammatical cases.
I would like that feature to be in Django as currently the admin changelist
header translation, with model name not inflected, in Polish (“Wybierz
użytkownik do zmiany”) sounds awkwardly and incorrectly. I'd assume for
other such languages the situation is similar. Bringing grammatical cases
there would be a great step towards perfection (that should attract
perfectionists :) ) in admin for languages like Czech, Greek, Hungarian and
many more.
I didn’t post a ticket nor created a pull request yet, as I’d like to
consult it with the community beforehand, according to the best practices.
Would you accept such a functionality in the Django project?
Best regards,
Maciej Olko
PS. There is a ticket about bringing gettext plurals into model’s verbose
name [3] loosly connected with this particular topic, but the discussion
underneath touches also the topic of grammatical cases.
[1] https://en.wikipedia.org/wiki/Grammatical_case
[2]
https://docs.google.com/spreadsheets/d/1GfdCMvqCdg1c2fTf940r8yEnCiXr9s86p0JbGRV4Aio
[3] https://code.djangoproject.com/ticket/11688
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