Classe « TypeDecorator »

Méthode sqlalchemy.TypeDecorator.process_bind_param

Signature de la méthode process_bind_param

def process_bind_param(self, value, dialect) 

Description

process_bind_param.__doc__

Receive a bound parameter value to be converted.

        Subclasses override this method to return the
        value that should be passed along to the underlying
        :class:`.TypeEngine` object, and from there to the
        DBAPI ``execute()`` method.

        The operation could be anything desired to perform custom
        behavior, such as transforming or serializing data.
        This could also be used as a hook for validating logic.

        This operation should be designed with the reverse operation
        in mind, which would be the process_result_value method of
        this class.

        :param value: Data to operate upon, of any type expected by
         this method in the subclass.  Can be ``None``.
        :param dialect: the :class:`.Dialect` in use.