hasNumericChars static method

FormFieldValidator<String> hasNumericChars({
  1. int atLeast = 1,
  2. RegExp? regex,
  3. String? errorText,
  4. bool checkNullOrEmpty = true,
})

FormFieldValidator that requires the field's value to contain a minimum number of numeric characters.

Parameters:

  • atLeast The minimum number of numeric characters (default: 1).
  • regex The regex pattern to match.
  • errorText The error message when the value does not contain the required number of numeric characters.
  • checkNullOrEmpty Whether to check for null or empty values.

This regex matches any character that is a digit (0-9).

  • It includes all numeric digits.
  • It can be used to find numeric characters.

Examples: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Implementation

static FormFieldValidator<String> hasNumericChars({
  int atLeast = 1,
  RegExp? regex,
  String? errorText,
  bool checkNullOrEmpty = true,
}) => HasNumericCharsValidator(
  atLeast: atLeast,
  regex: regex,
  errorText: errorText,
  checkNullOrEmpty: checkNullOrEmpty,
).validate;