Validates that a value is a valid locale.
The "value" for each locale is any of the ICU format locale IDs. For example,
the two letter ISO 639-1 language code (e.g. fr), or the
language code followed by an underscore (_) and the ISO 639-1
alpha-2 country code (e.g. fr_FR for French/France).
The given locale values are canonicalized before validating them to avoid issues with wrong
uppercase/lowercase values and to remove unneeded elements (e.g. FR-fr.utf8 will be validated
as fr_FR).
type: string default: This value is not a valid locale.
This message is shown if the string is not a valid locale.
| Parameter | Description |
|---|---|
| {{ value }} | The current (invalid) value |