Trait FieldValue 

pub trait FieldValue: Sized {
    // Required methods
    fn kind() -> FieldKind;
    fn to_value(&self) -> Value;
    fn from_value(value: Value) -> Self;
}

A Rust type a field can have.

Required Methods

fn kind() -> FieldKind

What it holds, unless the field’s attribute says otherwise.

fn to_value(&self) -> Value

As a record holds it.

fn from_value(value: Value) -> Self

From what a record holds. What cannot be read gives the type’s empty value.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FieldValue for DateTime

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for String

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for bool

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for f64

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for i32

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for i64

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for u32

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for u64

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl FieldValue for usize

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

impl<T: FieldValue> FieldValue for Option<T>

fn kind() -> FieldKind

fn to_value(&self) -> Value

fn from_value(value: Value) -> Self

Implementors