Struct type_rules::rules::MaxLength

pub struct MaxLength(pub usize);

Rule to constraint the maximum length of a String or &str

Works with Option, just return Ok(()) if it’s None

Example

use type_rules::Validator;
use type_rules::rules::MaxLength;

#[derive(Validator)]
struct Payload(#[rule(MaxLength(200))] String);

Tuple Fields

0: usize

Trait Implementations

impl Rule<Option<&'_ str>> for MaxLength

fn check(&self, value: &Option<&str>) -> Result<(), String>

impl Rule<Option<String>> for MaxLength

fn check(&self, value: &Option<String>) -> Result<(), String>

impl Rule<String> for MaxLength

fn check(&self, value: &String) -> Result<(), String>

impl Rule<str> for MaxLength

fn check(&self, value: &str) -> Result<(), String>