Trait FromSqlRef 

pub trait FromSqlRef<'a, A, DB: Backend>: Sized {
    // Required method
    fn from_sql(bytes: &'a mut DB::RawValue<'_>) -> Result<Self>;
}

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

A helper trait for deserializing data in a borrowed variant

This is mostly useful for getting a &str or &[u8] in your code

Required Methods

fn from_sql(bytes: &'a mut DB::RawValue<'_>) -> Result<Self>

See the trait documentation

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<'a> FromSqlRef<'a, Binary, Mysql> for &'a [u8]

Available on crate feature mysql_backend only.

fn from_sql(bytes: &'a mut MysqlValue<'_>) -> Result<Self>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

impl<'a> FromSqlRef<'a, Binary, Pg> for &'a [u8]

Available on crate feature postgres_backend only.

fn from_sql(bytes: &'a mut PgValue<'_>) -> Result<Self>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

impl<'a> FromSqlRef<'a, Binary, Sqlite> for &'a [u8]

Available on crate feature __sqlite-shared only.

fn from_sql(value: &'a mut SqliteValue<'_, '_, '_>) -> Result<Self>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

impl<'a> FromSqlRef<'a, Text, Mysql> for &'a str

Available on crate feature mysql_backend only.

fn from_sql(bytes: &'a mut MysqlValue<'_>) -> Result<Self>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

impl<'a> FromSqlRef<'a, Text, Pg> for &'a str

Available on crate feature postgres_backend only.

fn from_sql(value: &'a mut PgValue<'_>) -> Result<Self>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

impl<'a> FromSqlRef<'a, Text, Sqlite> for &'a str

Available on crate feature __sqlite-shared only.

fn from_sql(value: &'a mut SqliteValue<'_, '_, '_>) -> Result<Self>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Implementors