Struct actix_web::error::InternalError

[+] Show declaration

pub struct InternalError<T> { /* fields omitted */ }

[−] Expand description

Helper type that can wrap any error and generate custom response.

In following example any io::Error will be converted into "BAD REQUEST" response as opposite to INTERNAL SERVER ERROR which is defined by default.

use actix_web::fs::NamedFile;

fn index(req: HttpRequest) -> Result<fs::NamedFile> {
    let f = NamedFile::open("test.txt").map_err(error::ErrorBadRequest)?;
    Ok(f)
}

Methods

impl<T> InternalError<T>

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pub fn new(cause: T, status: StatusCode) -> Self

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Create InternalError instance

pub fn from_response(cause: T, response: HttpResponse) -> Self

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Create InternalError with predefined HttpResponse.

Trait Implementations

impl<T> Fail for InternalError<T> where     T: Send + Sync + Debug + Display + 'static,

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fn backtrace(&self) -> Option<&Backtrace>

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Returns a reference to the Backtrace carried by this failure, if it carries one.

fn cause(&self) -> Option<&(Fail + 'static)>

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Returns a reference to the underlying cause of this failure, if it is an error that wraps other errors.

fn context<D>(self, context: D) -> Context<D> where     D: Display + Send + Sync + 'static,

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Provides context for this failure.

fn compat(self) -> Compat<Self>

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Wraps this failure in a compatibility wrapper that implements std::error::Error.

Important traits for Causes<'f>

impl<'f> Iterator for Causes<'f> type Item = &'f (Fail + 'static);

fn causes(&self) -> Causes

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Returns a iterator over the causes of this Fail with itself as the first item and the root_cause as the final item.

fn root_cause(&self) -> &(Fail + 'static)

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Returns the "root cause" of this Fail - the last value in the cause chain which does not return an underlying cause.

impl<T> Debug for InternalError<T> where     T: Send + Sync + Debug + 'static,

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

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Formats the value using the given formatter.

impl<T> Display for InternalError<T> where     T: Send + Sync + Display + 'static,

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

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Formats the value using the given formatter.

impl<T> ResponseError for InternalError<T> where     T: Send + Sync + Debug + Display + 'static,

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fn error_response(&self) -> HttpResponse

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Create response for error

impl<T> Responder for InternalError<T> where     T: Send + Sync + Debug + Display + 'static,

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type Item = HttpResponse

The associated item which can be returned.

type Error = Error

The associated error which can be returned.

fn respond_to<S>(self, _: &HttpRequest<S>) -> Result<HttpResponse, Error>

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Convert itself to AsyncResult or Error.