Enum valid::Value

pub enum Value {
    String(String),
    Integer(i32),
    Long(i64),
    Float(f32),
    Double(f64),
    Boolean(bool),
    Decimal(BigDecimal),
    Date(NaiveDate),
    DateTime(DateTime<Utc>),
}

A Value represents a value of certain type.

The purpose of a Value is to include field values or parameters in ConstraintViolations in a type that allows to display the value in a localized format as part of a user facing error message.

It has variants for the basic types that are used in most applications.

Important types of 3rd party crates are supported through optional crate features:

3rd party crate	supported type	crate feature
bigdecimal	BigDecimal	bigdecimal
chrono	NaiveDate	chrono
chrono	DateTime	chrono

The From trait is implemented for the underlying types. Additionally there are implementations of the From trait for the primitive types i8, i16, i64, u8, u16, u32, u64.

u32 values greater than i32::max_value() are converted to Long(i64).

Panics

Converting u64 values greater than i64::max_value() has an unreliable behavior and might panic.

Notes

The list of supported types is very opinionated and may not fit all kind of applications. Please file and issue if you feel that support for another type may be useful!

Variants

String(String)

a string value

Integer(i32)

a 32bit signed integer value

Long(i64)

a 64bit signed integer value

Float(f32)

a 32bit float value

Double(f64)

a 64bit float value

Boolean(bool)

a boolean value

Decimal(BigDecimal)

a decimal value

Date(NaiveDate)

a date value

DateTime(DateTime<Utc>)

a value with date, time and timezone

Trait Implementations

impl From<String> for Value

fn from(value: String) -> Self

Performs the conversion.

impl From<i32> for Value

fn from(value: i32) -> Self

Performs the conversion.

impl From<i16> for Value

fn from(value: i16) -> Self

Performs the conversion.

impl From<u16> for Value

fn from(value: u16) -> Self

Performs the conversion.

impl From<i8> for Value

fn from(value: i8) -> Self

Performs the conversion.

impl From<u8> for Value

fn from(value: u8) -> Self

Performs the conversion.

impl From<u32> for Value

fn from(value: u32) -> Self

Performs the conversion.

impl From<i64> for Value

fn from(value: i64) -> Self

Performs the conversion.

impl From<u64> for Value

fn from(value: u64) -> Self

Performs the conversion.

impl From<f32> for Value

fn from(value: f32) -> Self

Performs the conversion.

impl From<f64> for Value

fn from(value: f64) -> Self

Performs the conversion.

impl From<bool> for Value

fn from(value: bool) -> Self

Performs the conversion.

impl From<BigDecimal> for Value

fn from(value: BigDecimal) -> Self

Performs the conversion.

impl From<NaiveDate> for Value

fn from(value: NaiveDate) -> Self

Performs the conversion.

impl<Z> From<DateTime<Z>> for Value where
    Z: TimeZone, 

fn from(value: DateTime<Z>) -> Self

Performs the conversion.

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<Value> for Value

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Debug for Value

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

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl Serialize for Value

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Value

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.