Struct actix_web::guard::GuardContext

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pub struct GuardContext<'a> { /* private fields */ }
Expand description

Provides access to request parts that are useful during routing.

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impl<'a> GuardContext<'a>

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pub fn head(&self) -> &RequestHead

Returns reference to the request head.

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pub fn req_data(&self) -> Ref<'a, Extensions>

Returns reference to the request-local data/extensions container.

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pub fn req_data_mut(&self) -> RefMut<'a, Extensions>

Returns mutable reference to the request-local data/extensions container.

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pub fn header<H: Header>(&self) -> Option<H>

Extracts a typed header from the request.

Returns None if parsing H fails.

§Examples
use actix_web::{guard::fn_guard, http::header};

let image_accept_guard = fn_guard(|ctx| {
    match ctx.header::<header::Accept>() {
        Some(hdr) => hdr.preference() == "image/*",
        None => false,
    }
});
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pub fn app_data<T: 'static>(&self) -> Option<&T>

Counterpart to HttpRequest::app_data.

Trait Implementations§

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impl<'a> Debug for GuardContext<'a>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> Freeze for GuardContext<'a>

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impl<'a> !RefUnwindSafe for GuardContext<'a>

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impl<'a> !Send for GuardContext<'a>

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impl<'a> !Sync for GuardContext<'a>

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impl<'a> Unpin for GuardContext<'a>

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impl<'a> !UnwindSafe for GuardContext<'a>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more