Add ISO 8601 (YYYY-MM-DD etc.) to the locale formatting

[proimage]

Description

The Formatting Locale in account preferences lists formats by country:

However, no country has adopted the only format that completely eliminates ambiguity, ISO 8601.

Can we please have a formatting option for ISO 8601?

[brandonkelly]

The locale provides a lot of config settings beyond just the date/time formats, including month & weekday names, AM/PM translations, number formatting info, and the localized currency code. So Craft definitely needs to know which locale to pull all that info from.

That said, you could override tho formatter config function from config/app.php and swap out the date/time formats with whatever you want:

return [
    'components' => [
        'formatter' => function() {
            $formatter = Craft::$app->getLocale()->getFormatter();
            $formatter->dateTimeFormats = [
                'short' => [
                    'date' => 'y-MM-dd',
                    'time' => 'hh:mm:ss',
                    'datetime' => 'y-MM-ddThh:mm:ss',
                ],
                'medium' => [
                    'date' => 'y-MM-dd',
                    'time' => 'hh:mm:ss',
                    'datetime' => 'y-MM-ddThh:mm:ss',
                ],
                'long' => [
                    'date' => 'y-MM-dd',
                    'time' => 'hh:mm:ss',
                    'datetime' => 'y-MM-ddThh:mm:ss',
                ],
                'full' => [
                    'date' => 'y-MM-dd',
                    'time' => 'hh:mm:ss',
                    'datetime' => 'y-MM-ddThh:mm:ss',
                ],
            ];
            return $formatter;
        },
    ]
];

[proimage]

Ahh, that's good to know! I wouldn't mind seeing a less general GUI for individual preferences at some point, but for now, a .php override should be fine.

Although... how would said override interact with other users' preferences?

[brandonkelly]

Hm good question, I guess there’s not really a way to factor that in right now.

[proimage]

@brandonkelly Has this been given any more thought?