Struct HeaderActions 

pub struct HeaderActions { /* private fields */ }

The HeaderActions a page or a resource declares, in button order.

let actions = HeaderActions::new().add::<ClearCache>();

Implementations

impl HeaderActions

pub fn new() -> Self

No action.

pub fn add<A: HeaderAction>(self) -> Self

Appends the action A, failing to compile when A::NAME is not a single path segment.

The check is a constant evaluated when A is instantiated, so cargo check does not report it; cargo build does. The doctest builds the program. Its E0080 names the error, but rustdoc checks the code on nightly only.

struct ClearCache;

impl HeaderAction for ClearCache {
    type Input = ();
    const NAME: &'static str = "clear cache";

    async fn run(_: &Cx, _: (), _: &mut dyn toasty::Executor) -> Result<tablo_core::Outcome, tablo_core::WriteError<std::convert::Infallible>> {
        Ok(tablo_core::Outcome::done())
    }
}

let _actions = HeaderActions::new().add::<ClearCache>();

pub fn is_empty(&self) -> bool

Whether no action is declared.

Trait Implementations

impl Debug for HeaderActions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for HeaderActions

fn default() -> Self

Returns the “default value” for a type.