Classe « Scaffold »

Méthode flask.blueprints.Scaffold.errorhandler

Signature de la méthode errorhandler

def errorhandler(self, code_or_exception: Union[Type[-GenericException], int]) -> Callable[[ForwardRef('ErrorHandlerCallable[GenericException]')], ForwardRef('ErrorHandlerCallable[GenericException]')] 

Description

errorhandler.__doc__

Register a function to handle errors by code or exception class.

        A decorator that is used to register a function given an
        error code.  Example::

            @app.errorhandler(404)
            def page_not_found(error):
                return 'This page does not exist', 404

        You can also register handlers for arbitrary exceptions::

            @app.errorhandler(DatabaseError)
            def special_exception_handler(error):
                return 'Database connection failed', 500

        .. versionadded:: 0.7
            Use :meth:`register_error_handler` instead of modifying
            :attr:`error_handler_spec` directly, for application wide error
            handlers.

        .. versionadded:: 0.7
           One can now additionally also register custom exception types
           that do not necessarily have to be a subclass of the
           :class:`~werkzeug.exceptions.HTTPException` class.

        :param code_or_exception: the code as integer for the handler, or
                                  an arbitrary exception