Opened 7 months ago

Closed 7 months ago

#35389 closed Bug (invalid)

stringformat filter in template breaks numeric localization

Reported by: Danic Owned by: nobody
Component: Template system Version: 5.0
Severity: Normal Keywords: locale, localization
Cc: Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description

The stringformat filter breaks the numeric localization in the template.

With these settings

LANGUAGES = [
    ("de", _("German")),
    ("en", _("English")),
]
LANGUAGE_CODE = "de"
TIME_ZONE = "Europe/Berlin"
USE_I18N = True
USE_TZ = True

the following template

{{ 3.14 }}
{{ 3.14 | localize }}
{{ 3.14 | unlocalize }}
{{ 3.14159265359 | stringformat:".2f" }}
{{ 3.14159265359 | stringformat:".2f" | localize }}
{{ 3.14159265359 | stringformat:".2f" | unlocalize }}

Should print

3,14
3,14
3.14
3,14
3,14
3.14

but factually prints

3,14
3,14
3.14
3.14 <--
3.14 <--
3.14

Change History (1)

comment:1 by Mariusz Felisiak, 7 months ago

Resolution: → invalid
Status: new → closed

It's explicitly ​documented that stringformat:

Formats the variable according to the argument, a string formatting specifier. This specifier uses the printf-style String Formatting syntax, with the exception that the leading “%” is dropped.

and in Python docs you will find that . is always used as a decimal separate. localize/unlocalize doesn't affect strings so everything works as expected.

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