cupertinoPrefixBuilder<T> function

Text? cupertinoPrefixBuilder<T>(
  1. FastFormFieldState<T> field
)

A function typically used for building a CupertinoFormRow error widget.

Returns a Text widget when FastFormField.labelText is a String otherwise null.

Implementation

Text? cupertinoPrefixBuilder<T>(FastFormFieldState<T> field) {
  final FastFormField<T>(:labelText) = field.widget;
  return labelText is String ? Text(labelText) : null;
}