models.Datefield being localized where it shouldn't

[Akshay Salunke]

So, I have a DateField in my model and have also set I18N & L10N to True in settings. When a browser running en-AU locale visits the website, Django tries to parse the value read from model, using the first value in DATE_INPUT_FORMATS from /conf.

The bug is when a user in en-AU locale visits the website, Django reads the Datefield value from model and tries to localize it for en-AU locale (from DATE_INPUT_FORMATS in /conf/en_AU) to this format '%d/%m/%Y', but html5 requires the value for <input type="date"> to be explicitly in this format: yyyy-MM-dd. ​ ref1 ​ ref2

This causes an error in chrome dev console and the HTML date field rendered without the date read from the model.

This bug goes away when I disable L10N in settings. I am able to reproduce this bug in en-AU and en-GB

[Akshay Salunke]

This is how date picker looks in chrome when locale is en-AU even when this field has an initials value.

[Akshay Salunke]

Error in chrome dev console.

[Akshay Salunke]

Replying to akshaysalunke13:

So, I have a DateField in my model and have also set I18N & L10N to True in settings. When a browser running en-AU locale visits the website, Django tries to parse the value read from model, using the first value in DATE_INPUT_FORMATS from /conf.

The bug is when a user in en-AU locale visits the website, Django reads the Datefield value from model and tries to localize it for en-AU locale (from DATE_INPUT_FORMATS in /conf/en_AU) to this format '%d/%m/%Y', but html5 requires the value for <input type="date"> to be explicitly in this format: yyyy-MM-dd. [ref](​https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/date) [ref2](​https://developer.mozilla.org/en-US/docs/Web/HTML/Date_and_time_formats#Format_of_a_valid_date_string).

This causes an error in chrome dev console and the HTML date field rendered without the date read from the model.

This bug goes away when I disable L10N in settings. I am able to reproduce this bug in en-AU and en-GB

[Claude Paroz]

AFAIK Django does not use type="date" for its widgets due to browser support being too variable. If you set it yourself, you should at least force the form fields initialized with localize=False. Anyway, this is entering support territory.