OptionalExtractable<T> class
final
Turns a client-error rejection into None.
Wrap any extractor with this to let a handler declare Option<T> and treat
a missing or malformed value as absent.
A 5xx rejection passes through instead. Those mean something on the server is wrong, such as middleware that never wrote the context value being read, and hiding them would make a broken deployment look like an anonymous request.
const viewer = OptionalExtractable(BearerAuth());
- Implemented types
Constructors
-
OptionalExtractable(FromRequestParts<
T> inner) -
Wraps
inner.const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
-
inner
→ FromRequestParts<
T> -
The extractor whose client-error rejection is swallowed.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
extract(
Request request) → Future< Result< Option< >T> , Rejection> -
Produces the value, or the rejection that stops the handler.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited