.max()

Passes when value.length is at most maxLength. Throws ArgumentError for a negative length.

Signature

StringValidator<O> max(int maxLength, {String? message, MessageBuilder? messageBuilder})

Parameters

Parameter	Type	Meaning
maxLength	int	The largest accepted length. params['max'].
message	String?	Replaces the default error message.
messageBuilder	MessageBuilder?	Builds the message from the issue. message wins when both are given. See Message builders.

Issue

Code tooLong. Default message: value must not be more than 3 characters long. value is replaced by the field name when there is one.

Code generation

@HasMax(n) on a String field. On a number field it means a maximum value. Put the annotation on the constructor parameter or the field.

Example

Hand-written

final code = l.string().max(3);

Generated

@HasMax(50) required String name, // l.string().max(50).required()

code.validate(input)+1-1

1. +valid: 'abc'
2. -invalid: 'abcd'value must not be more than 3 characters long