klein.Requirer

class documentation

class Requirer: (source)

Dependency injection for required parameters.

Method	`prerequisite`	Specify a component that is a pre-requisite of every request routed through this requirer's `require` method. Used like so:
Method	`require`	Inject the given dependencies while running the given route.
Instance Variable	`_prerequisites`	Undocumented

def prerequisite(self, providesComponents, requiresComponents=()): (source)

Specify a component that is a pre-requisite of every request routed through this requirer's require method. Used like so:

    requirer = Requirer()

    @requirer.prerequisite([IFoo])
    @inlineCallbacks
    def fooForRequest(request):
        request.setComponent(IFoo, someFooComponent)

Parameters
providesComponents:`Sequence[Type[Interface]]`	Undocumented
requiresComponents:`Sequence[Type[Interface]]`	Undocumented
Returns
`Callable[[Callable], Callable]`	Undocumented
Note
`requiresComponents` is, at this point, for the reader's interest only, the framework will not topologically sort dependencies; you must presently register prerequisites in the order you want them to be called.

def require(self, routeDecorator, **requiredParameters): (source)

Inject the given dependencies while running the given route.

Parameters
routeDecorator:`_routeT`	Undocumented
**requiredParameters:`IRequiredParameter`	Undocumented
Returns
`_routeDecorator`	Undocumented

_prerequisites: List[_prerequisiteCallback] = (source)

Undocumented