Struct StringLengthRule 

pub struct StringLengthRule { /* private fields */ }

Rule that checks string length.

Implementations

impl StringLengthRule

pub fn new(min: Option<usize>, max: Option<usize>) -> Self

Create a string length rule.

pub fn non_empty() -> Self

Create a non-empty rule.

pub fn max(max: usize) -> Self

Create a max length rule.

Trait Implementations

impl ValidationRule<String> for StringLengthRule

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

Validate the value.

fn description(&self) -> &str

Get a description of this rule.

impl ValidationRule<str> for StringLengthRule

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

Validate the value.

fn description(&self) -> &str

Get a description of this rule.