Trait Guard

pub trait Guard {
    // Required method
    fn check(
        &self,
        ctx: &Context<'_>,
    ) -> impl Future<Output = Result<()>> + Send;
}

Field guard

Guard is a pre-condition for a field that is resolved if Ok(()) is returned, otherwise an error is returned.

Required Methods

fn check(&self, ctx: &Context<'_>) -> impl Future<Output = Result<()>> + Send

Check whether the guard will allow access to the field.

Object Safety

This trait is not object safe.

Implementors

impl<T> Guard for T

where T: Fn(&Context<'_>) -> Result<()> + Send + Sync + 'static,