Trait ToOneRelation 

pub trait ToOneRelation<T>: Sealed<T> { }

A to-one relation field to T a RelationColumn reads: Deferred<T>, or Deferred<Option<T>> for a nullable relation.

T is inferred from the field: Deferred<X> matches the first impl with T = X alone, since an Option is not a model, and the two impls cannot overlap, which would need T = Option<T>.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl<T: Model> ToOneRelation<T> for Deferred<Option<T>>

impl<T: Model> ToOneRelation<T> for Deferred<T>

Implementors