Flutter localization with dynamic strings in json files

Question

Flutter localization: Can we directly replace some regex pattern in string to get dynamic string using json language files instead of using .arb files to avoid so many overheads of using .arb? Is there any limitation in this approach of direct replace and use instead of arb & Intl library?

"gd_morning": "Good Morning {name}",

AppLocalizations.of(context)
                .get('gd_morning')
                .replaceAll('{name}', 'My Name'),

dm_tr · Accepted Answer · 2020-12-22 20:28:44Z

2

Yes it's possible. Have a try with this.
This assumes that your json contents something like "gd_morning": "Good Morning {0}" for instance

String translate(String key, {List<dynamic> args}) {
  if (null == _translatedStrings[key]) return "${locale.languageCode}[$key]";
  _translatedKey = _translatedStrings[key];
  if (null == args || args.isEmpty) return _translatedKey;
  else {
    for(int i = 0; i < args.length; ++i) _translatedKey = _translatedKey.replaceAll("{$i}", args[i]);
    return _translatedKey;
  }
}

answered Dec 22, 2020 at 20:28

dm_tr

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5 Comments

dm_tr Over a year ago

And then to apply the translation you can write Translator.of(context).translate("gd_morning", args: ["TechHelper"]);

TechHelper Over a year ago

Thanks @dm_tr.Yes, i am doing similar now. But I want to ask that if this is proper way and will work seamlessly in all the situations? Or we will need localization using .arb file & Intl library to support every case and situation?

dm_tr Over a year ago

It works in all situations even if you change the order of the values like {0} Good morning. The result will be in this case TechHelper Good morning

TechHelper Over a year ago

I am continuing using replace logic for now. Let's see how it works in every situation. If i face any problem I will update it here.

dm_tr Over a year ago

Feel free. Also if it answer your question you can mark it as the correct answer to help future readers. Happy coding

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