passes method

@override FutureOr<bool> passes(ValidationContext context)

Validates the value using the given context.

Returns true if valid, otherwise false.

Implementation

@override
FutureOr<bool> passes(ValidationContext context) {
  final value = context.value;
  if (value == null) return false;
  if (value is! String) return false;

  final urlRegex = RegExp(
    r'^https?://' // protocol
    r'(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)+' // domain
    r'[a-zA-Z]{2,}' // top-level domain
    r'(?::\d{1,5})?' // optional port
    r'(?:/?|[/?]\S+)$', // path
    caseSensitive: false,
  );

  return urlRegex.hasMatch(value);
}