@[Controller("thing")]
@[VirtualAction("new", "create", Protect(Role("admin")))]
@[VirtualAction("edit", "update", Protect(OwnerRelation))]
class ThingController : ApplicationController {

    @[Action, Protect(Role("admin"))]
    void create ( Request req, Response res ) {...}

    @[Action]
    void index ( Request req, Response res ) {...}

    @[Action, Protect(Role("member"))]
    void show ( Request req, Response res ) {...}

    @[Action, Protect(OwnerRelation)]
    void update ( Request req, Response res ) {...}

    @[Action("delete"), Protect(Role("admin"))]
    void remove ( Request req, Response res ) {...}

}


@[Model("thing")]
@[ForbidMassAssignment]
class Thing : Model {

    @[Attr, Shallow]
    @[Validate( Present, Unique, Length("<=", 128) )]
    A!string name;

    @[Attr, Shallow]
    @[Validate( Length("[]", 16, 256) )]
    A!string description;

    @[Attr(BelongsTo, User), Shallow]
    @[Validate( Present )]
    A!User user;

    @[Attr(HasMany, Tag, Through(Tagging))]
    @[Validate( NoDuplicate )]
    A!(Tagging[]) tags;

    @[Attr]
    @[Validate( Present )]
    A!ulong size;

    @[Attr]
    @[Validate( Present )]
    A!ulong weight;

    @property
    ulong ratio () {...}

}