Detailed explanation of the examples of rust's nuclear verification and validator's method of validator's verification of data

nutype = { version = "0.5.0", features = ["serde","regex"] }
regex = "1"
thiserror = "1"

#[nutype(
sanitize(trim, lowercase),
validate(not_empty, len_char_min = 3, len_char_max = 30),
derive(AsRef, Clone, Debug, Serialize, Deserialize, PartialEq)
)]
// AsRef means that username can be accessed separately and clone copypub struct Username(String);
// #[nutype(
// validate(not_empty, len_char_min = 8),
// derive(AsRef, Clone, Serialize, Deserialize, PartialEq)
// )]
#[nutype(validate(with = password_regex, error = ErrorMessage),derive(Debug, PartialEq),)]
pub struct Password(String);
// Regularly match mobile phone numberstatic PHONE_NUMBER_REGEX: LazyLock<Regex> = LazyLock::new(||
Regex::new("^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\\d{8}$"
).unwrap());
// Use regular expressions directly#[nutype(validate(regex = PHONE_NUMBER_REGEX))]
pub struct PhoneNumber(String);
// Custom method#[nutype(validate(with = email_regex, error = ErrorMessage))]
pub struct EmailNumber(String);
// Regularly match email numberstatic EMAIL_NUMBER_REGEX: LazyLock<Regex> = LazyLock::new(||
Regex::new("^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$"
).unwrap());
pub fn email_regex(name: &str) -> Result<(), ErrorMessage> {
	match EMAIL_NUMBER_REGEX.captures(name){
		// Here you can return a custom error type		None => Err(ErrorMessage::InvalidEmailFormat),
		Some(_) => Ok(())
	}
}

validator = {version = "0.18.1",features = ["derive"]}
lazy_static = "1.5.0"

#[derive(Validate, Debug, Default, Clone, Serialize, Deserialize)]
pub struct RegisterUserDto {
#[validate(length(min = 1, message = "Name is required"))]pub name: String,
#[validate(length(min = 0, message = "User name is not required"))]pub username: String,
#[validate(
length(min = 1, message = "Email is required"),
email(message = "Invalid email")
)]
pub email: String,
#[validate(
length(min = 1, message = "Mobile phone number is required"),
)]
pub phone: String,
#[validate(
length(min = 6, message = "The password must be at least 6 characters")
)]
pub password: String,
#[validate(
length(min = 1, message = "Requires a password"),
must_match(other = "password", message="Password mismatch")
)]
#[serde(rename = "passwordConfirm")]
pub password_confirm: String,
}
//validatorCustom methods cannot use custom error types，Must usecrateof，See morevalidator crate