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;
  final args = context.parameters;
  if (value == null || args.isEmpty) return false;

  final strVal = value.toString();

  final length = int.tryParse(args[0]);
  if (length == null) return false;

  // Must be numeric
  if (!RegExp(r'^[0-9]+$').hasMatch(strVal)) return false;

  return strVal.length == length;
}