Trait serde_valid::validation::ValidateMaxLength

pub trait ValidateMaxLength {
    // Required method
    fn validate_max_length(
        &self,
        max_length: usize
    ) -> Result<(), MaxLengthError>;
}

Max length validation of the string.

See https://json-schema.org/understanding-json-schema/reference/string.html#length

use serde_json::json;
use serde_valid::{Validate, ValidateMaxLength};

struct MyType(String);

impl ValidateMaxLength for MyType {
    fn validate_max_length(
        &self,
        max_length: usize,
    ) -> Result<(), serde_valid::MaxLengthError> {
        self.0.validate_max_length(max_length)
    }
}

#[derive(Validate)]
struct TestStruct {
    #[validate(max_length = 5)]
    val: MyType,
}

let s = TestStruct {
    val: MyType(String::from("abcdef")),
};

assert_eq!(
    s.validate().unwrap_err().to_string(),
    json!({
        "errors": [],
        "properties": {
            "val": {
                "errors": ["The length of the value must be `<= 5`."]
            }
        }
    })
    .to_string()
);

Required Methods

fn validate_max_length(&self, max_length: usize) -> Result<(), MaxLengthError>

Implementors

impl<T> ValidateMaxLength for T

where T: Length + ?Sized,