trParams method

String trParams([ Map<String, String> params = const {} ])

Translates this key with tr, then replaces every @name placeholder in the result with the value mapped to name in params.

Placeholders are matched by the string's logical character order: the @ must come immediately before the parameter name ('@correctAnswers'), regardless of the script or text direction of the surrounding text.

Note for right-to-left translations (Arabic, Hebrew, etc.): inside an RTL string, a correctly written @name placeholder is displayed with the @ on the visual right of the name. Do not "fix" this by moving the @ after the name ('correctAnswers@') — that stores the @ on the wrong logical side, so the placeholder will never be substituted.

// en_US: 'You answered @correct of @total questions!'
// he_IL: 'ענית נכון על @correct מתוך @total שאלות!'
'score'.trParams({'correct': '9', 'total': '10'});

Implementation

String trParams([Map<String, String> params = const {}]) {
  var trans = tr;
  if (params.isNotEmpty) {
    params.forEach((key, value) {
      trans = trans.replaceAll('@$key', value);
    });
  }
  return trans;
}