Using plural(0) count as other

[DafiMjd]

I have this json:
"test": {
"zero": "0Test",
"one": "1Test",
"many": "many{digit} Tests",
"other": "other{digit} Tests"
}

when i use LocaleKeys.test.plural(0) it outputs as other

[mauriziopinotti]

Same here, it's a regression in version 3.0.4 (3.0.3 works correctly).

[mauriziopinotti]

@aissat any update on this issue? Looks like you made a new release but this fix is not included... it's a major regression so I think it should have priority over new feature, right?

[flavio-silva]

Same here, I have to downgrade it to 3.0.3

[dimzeta]

Same thing, still present in 3.0.5.

But this is not a bug, this is a feature 🤓

This is present since this PR: #620, which now takes into account pluralization according to language.

easy_localization/lib/src/localization.dart

Lines 140 to 141 in 63a3974

	final pluralRule = _pluralRule(_locale.languageCode, value);
	final pluralCase = pluralRule != null ? pluralRule() : _pluralCaseFallback(value);

Pluralization is now based on the rules in plural_rules.dart. These rules are written from The Unicode CLDR (Common Locale Data Repository), and only a few languages have a specific rule for zero.

If your selected language does not have a specific rule for zero, it will use the "one" or "other" translation. Example for English:

PluralCase _en_rule() {
  if (_i == 0 || _i == 1) {
    return ONE;
  }
  return OTHER;
}

I used to do something like this, which does not work anymore:

{
    "zero": "No card",
    "one": "1 card",
    "other": "{} cards"
}

To fix this, we have to use it like this:

{
    "zero": "No card",
    "one": "{} card",
    "other": "{} cards"
}

As you can see, the bad news here is we can't no longer use "zero", unless the language has a specific rule.

To me, it will be nice to include "zero" to every language, to be able to display a custom translation in this case.

[mauriziopinotti]

I have sent PR #668 for this: there's a new forcePluralCaseFallback option that can be set to true to enable the "legacy" behavior (pre-3.0.4). It defaults to false though, so that the new behavior is still used by default.

  runApp(EasyLocalization(
    // ...
    forcePluralCaseFallback: true,
    child: ...
  ));

[mauriziopinotti]

Commenting for clarity: after upgrading to easy_localization 3.0.7 you'll get the "old" behavior by default, with an option (ignorePluralRules) to switch to the new one.

So, if you have

  "label_members": {
    "zero": "nobody",
    "one": "{} member",
    "two": "{} members",
    "other": "{} members"
  },

then

LocaleKeys.label_members.plural(0)

will give

• on easy_localization up to 3.0.6: nobody
• on easy_localization 3.0.6: 0 members
• on easy_localization 3.0.7: nobody
• on easy_localization 3.0.7 with ignorePluralRules: false: 0 members