Classe « PropComparator »

Méthode sqlalchemy.orm.PropComparator.has

Signature de la méthode has

def has(self, criterion=None, **kwargs) 

Description

has.__doc__

Return true if this element references a member which meets the
        given criterion.

        The usual implementation of ``has()`` is
        :meth:`.RelationshipProperty.Comparator.has`.

        :param criterion: an optional ClauseElement formulated against the
          member class' table or attributes.

        :param \**kwargs: key/value pairs corresponding to member class
          attribute names which will be compared via equality to the
          corresponding values.