# Trait actix_web::pred::Predicate[−][src]

    pub trait Predicate<S> {
        fn check(&self, _: &Request, _: &S) -> bool;
    }

Trait defines resource route predicate. Predicate can modify request object. It is also possible to to store extra attributes on request by using `Extensions` container, Extensions container available via `HttpRequest::extensions()` method.

## Required Methods

### `fn check(&self, _: &Request, _: &S) -> bool`

Check if request matches predicate

## Implementors

- `impl<S: 'static> Predicate<S> for AnyPredicate<S>` | [src]

- `impl<S: 'static> Predicate<S> for AllPredicate<S>` | [src]

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