Enum Attr 

#[repr(u8)]
pub enum Attr {
    Min(i64),
    Max(i64),
    MinLength(usize),
    MaxLength(usize),
    Email,
    Url,
    Regex(&'static str),
    Contains(&'static str),
    Custom(Option<ValidatorFn>),
}

Validation attributes for facet fields.

These attributes can be used with #[facet(validate::...)] syntax.

Variants

Min(i64)

Minimum numeric value constraint.

Usage: #[facet(validate::min = 0)]

Max(i64)

Maximum numeric value constraint.

Usage: #[facet(validate::max = 100)]

MinLength(usize)

Minimum length constraint for strings and collections.

Usage: #[facet(validate::min_length = 1)]

MaxLength(usize)

Maximum length constraint for strings and collections.

Usage: #[facet(validate::max_length = 100)]

Email

Email format validation.

Usage: #[facet(validate::email)]

Url

URL format validation.

Usage: #[facet(validate::url)]

Regex(&'static str)

Regex pattern validation.

Usage: #[facet(validate::regex = r"^[A-Z]{2}$")]

Contains(&'static str)

String contains validation.

Usage: #[facet(validate::contains = "foo")]

Custom(Option<ValidatorFn>)

Custom validator function.

The function must have signature fn(&T) -> Result<(), String>.

Usage: #[facet(validate::custom = my_validator)]

Trait Implementations

impl Clone for Attr

fn clone(&self) -> Attr

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Attr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Attr

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.