| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Servant.Server.Internal.ErrorFormatter
Synopsis
- data ErrorFormatters = ErrorFormatters {}
- type ErrorFormatter = TypeRep -> Request -> String -> ServerError
- type NotFoundErrorFormatter = Request -> ServerError
- type DefaultErrorFormatters = '[ErrorFormatters]
- defaultErrorFormatters :: ErrorFormatters
- type MkContextWithErrorFormatter (ctx :: [*]) = ctx .++ DefaultErrorFormatters
- mkContextWithErrorFormatter :: forall (ctx :: [*]). Context ctx -> Context (MkContextWithErrorFormatter ctx)
Documentation
data ErrorFormatters Source #
A collection of error formatters for different situations.
If you need to override one of them, use defaultErrorFormatters with record update syntax.
Constructors
| ErrorFormatters | |
Fields
| |
type ErrorFormatter = TypeRep -> Request -> String -> ServerError Source #
A custom formatter for errors produced by parsing combinators like
ReqBody or Capture.
A TypeRep argument described the concrete combinator that raised
the error, allowing formatter to customize the message for different
combinators.
A full Request is also passed so that the formatter can react to Accept header,
for example.
type NotFoundErrorFormatter = Request -> ServerError Source #
This formatter does not get neither TypeRep nor error message.
type DefaultErrorFormatters = '[ErrorFormatters] Source #
Context that contains default error formatters.
defaultErrorFormatters :: ErrorFormatters Source #
Default formatters will just return HTTP 400 status code with error message as response body.
type MkContextWithErrorFormatter (ctx :: [*]) = ctx .++ DefaultErrorFormatters Source #
mkContextWithErrorFormatter :: forall (ctx :: [*]). Context ctx -> Context (MkContextWithErrorFormatter ctx) Source #