emailValidator function

String? emailValidator(
  1. String? value, {
  2. String message = 'Enter a valid email',
})

Field must be a valid email (blank passes).

Implementation

String? emailValidator(String? value,
    {String message = 'Enter a valid email'}) {
  if (value == null || value.trim().isEmpty) return null;
  return value.isEmail() ? null : message;
}