Trait ForeignKey 

pub trait ForeignKey<K>:
    Sealed<K>
    + IntoExpr<Self>
    + FormScalar
    + Send
    + Sync
    + 'static { }

A foreign-key column type referencing a primary key of type K: K itself, or Option<K> for an optional reference. Sealed: these are the only two.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<K> ForeignKey<K> for Option<K>

where Option<K>: IntoExpr<Self> + FormScalar + Send + Sync + 'static,

Implementors

impl<K> ForeignKey<K> for K

where K: IntoExpr<K> + FormScalar + Send + Sync + 'static,