Derive Macro ModelMixin 

#[derive(ModelMixin)]
{
    // Attributes available to this derive:
    #[field]
}

Marker derive for abstract model mixins (never creates a table).

Example

#[derive(ModelMixin)]
struct Timestamps {
    #[field(auto_now_add)]
    created_at: FieldDateTime,
    #[field(auto_now)]
    updated_at: FieldDateTime,
}

#[derive(Model)]
#[model(mixins(Timestamps))]
struct Article {
    id: FieldUuid,
    title: FieldVarchar<1, 255>,
}