Trait FromValue 

pub trait FromValue: Sized {
    // Required method
    fn from_value(value: &Value) -> Result<Self>;
}

Trait for converting from a Value to a typed value.

Required Methods

fn from_value(value: &Value) -> Result<Self>

Convert from a Value, returning an error if the conversion fails.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FromValue for Value

fn from_value(value: &Value) -> Result<Self>

impl FromValue for bool

fn from_value(value: &Value) -> Result<Self>

impl FromValue for f32

fn from_value(value: &Value) -> Result<Self>

Convert a Value reference to f32, returning an error if precision would be lost.

impl FromValue for f64

fn from_value(value: &Value) -> Result<Self>

Convert a Value reference to f64, returning an error if precision would be lost.

impl FromValue for i8

fn from_value(value: &Value) -> Result<Self>

impl FromValue for i16

fn from_value(value: &Value) -> Result<Self>

impl FromValue for i32

fn from_value(value: &Value) -> Result<Self>

impl FromValue for i64

fn from_value(value: &Value) -> Result<Self>

impl FromValue for u8

fn from_value(value: &Value) -> Result<Self>

impl FromValue for u16

fn from_value(value: &Value) -> Result<Self>

impl FromValue for u32

fn from_value(value: &Value) -> Result<Self>

impl FromValue for u64

fn from_value(value: &Value) -> Result<Self>

impl FromValue for String

fn from_value(value: &Value) -> Result<Self>

impl FromValue for Vec<u8>

fn from_value(value: &Value) -> Result<Self>

impl FromValue for [u8; 16]

fn from_value(value: &Value) -> Result<Self>

impl<T: FromValue> FromValue for Option<T>

fn from_value(value: &Value) -> Result<Self>

Implementors

impl FromValue for sqlmodel_core::value::Value