Struct ValidOption 

pub struct ValidOption<T>(pub Option<T>);

Validated Option allows your extractors to use either a valid T, or a missing T, but reject an invalid T, based on the definition of ‘missing’ for those items.

For this to work, the crate that defines the extractor must implement FromRequestPartsOptional for the extractor.

Tuple Fields

0: Option<T>

Trait Implementations

impl<S, B, T> FromRequest<S, B> for ValidOption<T>

where S: Send + Sync, B: Sync + Send + 'static, T: FromRequestOptional<S, B> + Send + Sync, T::Rejection: Send + Sync,

type Rejection = <T as FromRequest<S, B>>::Rejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.

fn from_request<'life0, 'async_trait>( req: Request<B>, body: &'life0 S, ) -> Pin<Box<dyn Future<Output = Result<Self, Self::Rejection>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Perform the extraction.

impl<S, T> FromRequestParts<S> for ValidOption<T>

where S: Send + Sync, T: FromRequestPartsOptional<S> + Send + Sync, T::Rejection: Send + Sync,

type Rejection = <T as FromRequestParts<S>>::Rejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.

fn from_request_parts<'life0, 'life1, 'async_trait>( parts: &'life0 mut Parts, state: &'life1 S, ) -> Pin<Box<dyn Future<Output = Result<Self, Self::Rejection>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Perform the extraction.