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PanelHandle

Struct PanelHandle 

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pub struct PanelHandle { /* private fields */ }
Expand description

A panel’s mounted resources and its database, which a background job or a test keeps to build a context per run without declaring the panel again. A router’s mounted panel gives it through panel_handle, a panel no router mounts through Panel::handle. Cloning it is cheap.

let builder = Router::builder()
    .discover()
    .app_context(db)
    .panel(Panel::new("admin").resource::<PostResource>())?;
let admin = builder.panel_handle("admin").expect("mounted above");
let router = builder.build();

// In the job, once per run:
let cx = admin.context().with(Tenant(tenant));
let posts = scoped_query::<PostResource>(&cx)?;

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impl PanelHandle

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pub fn context(&self) -> Cx

A context outside any request in which the panel’s resources answer as the panel mounted them: what a job or a test passes to scoped_query, can, write_create and the other entry points that answer from a mounted def. It holds the database and the resources, and no request, session or tenant. Add a tenant with cx.with(Tenant(id)).

The context is one unit of work, as a request is: loads it memoizes stay cached for its lifetime, so a job builds one per run.

Trait Implementations§

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impl Clone for PanelHandle

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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