validate method

@override bool validate(dynamic value, [ List<String>? options ])

Validates whether the provided value is a valid URL.

The value parameter is the input that needs to be validated. The optional options parameter can be used to pass additional options for validation, but it is not used in this implementation.

Returns true if the value is a valid URL, otherwise false.

Implementation

@override
bool validate(dynamic value, [List<String>? options]) {
  // If the value is null, it is not a valid URL.
  if (value == null) return false;

  // Regular expression to match a valid URL.
  // The URL must start with http:// or https:// and followed by valid characters.
  return RegExp(r'^https?://[^\s/$.?#].[^\s]*$').hasMatch(value.toString());
}