pub trait ToDbValue: Send + Sync {
// Required method
fn to_db_value(&self) -> DbValue;
// Provided method
fn null_db_value() -> DbValue
where Self: Sized { ... }
}pub trait ToDbValue: Send + Sync {
// Required method
fn to_db_value(&self) -> DbValue;
// Provided method
fn null_db_value() -> DbValue
where Self: Sized { ... }
}