hasSpecialChars static method

FormFieldValidator<String> hasSpecialChars({
  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 special characters.

Parameters:

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

This regex matches any character that is not a letter (A-Z, a-z) or a digit (0-9).

  • It includes special characters and symbols.
  • It can be used to find non-alphanumeric characters.

Examples: @, #, %

Implementation

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