NiceValidationGroup class

Validation group that manages multiple validators.

final _validCtrl = NiceValidationGroupController();

NiceValidationGroup(
  controller: _validCtrl,
  child: Column(children: [
    NiceValidator(
      field: 'email',
      rules: [NiceValidators.required(), NiceValidators.email()],
      builder: (error) => TextField(
        decoration: InputDecoration(errorText: error),
        onChanged: (v) => _validCtrl.setValue('email', v),
      ),
    ),
    ElevatedButton(
      onPressed: () {
        final results = _validCtrl.validateAll();
        if (_validCtrl.isValid) { /* submit */ }
      },
      child: Text('Submit'),
    ),
  ]),
)