Trait OptionSource 

pub trait OptionSource:
    Sized
    + Send
    + Sync
    + 'static {
    type Model: Model + IntoExpr<Self::Model> + Send + Sync + 'static;

    // Required method
    fn scoped_query(cx: &Cx) -> Result<Query<List<Self::Model>>>;

    // Provided methods
    fn allows(_cx: &Cx, _ability: Ability<'_, Self::Model>) -> bool { ... }
    fn requires_tenant(_cx: &Cx) -> bool { ... }
    fn search_expr(_cx: &Cx, _term: &str) -> Option<Expr<bool>> { ... }
    fn order_by(_cx: &Cx) -> Option<OrderByExpr> { ... }
}

Describes the source a relationship option loader reads.

Every Resource is one, answering from its def as the request’s panel mounted it.

Required Associated Types

type Model: Model + IntoExpr<Self::Model> + Send + Sync + 'static

The model whose rows become options.

Required Methods

fn scoped_query(cx: &Cx) -> Result<Query<List<Self::Model>>>

States the tenant-scoped seed query every option load starts from and reports an unscopable source as misdeclared.

Provided Methods

fn allows(_cx: &Cx, _ability: Ability<'_, Self::Model>) -> bool

Whether the current user may see the rows ability names; refusing ViewAny fails the whole load closed. Defaults to refusing everything.

fn requires_tenant(_cx: &Cx) -> bool

Declares whether the source’s rows are tenant-owned and fails a tenantless request closed.

fn search_expr(_cx: &Cx, _term: &str) -> Option<Expr<bool>>

States the related source’s search predicate for term, or None when it declares no searchable column.

fn order_by(_cx: &Cx) -> Option<OrderByExpr>

States the related source’s declared default ordering.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl<R: Resource> OptionSource for R

Every Resource is an OptionSource, answering from its def as the request’s panel mounted it.

scoped_query forwards to scoped_query, so an option load inherits the tenant gate and filter exactly as every other loader does. The search expression and default ordering come from the resource’s table, which is where “the option search searches the related resource’s searchable columns” lives.

type Model = <R as Resource>::Model