Trait FromColumn 

pub trait FromColumn: Sized {
    // Required method
    fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>;
}

Trait for types that can be extracted from a column.

Required Methods

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

Extract value from a row column.

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 FromColumn for Option<bool>

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for Option<f64>

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for Option<i32>

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for Option<i64>

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for Option<String>

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for Option<Vec<u8>>

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for bool

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for f64

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for i32

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for i64

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for String

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

impl FromColumn for Vec<u8>

fn from_column(row: &impl RowRef, column: &str) -> Result<Self, RowError>

Implementors