src/marshmallow_sqlalchemy/fields.py
def _deserialize(self, value, *args, **kwargs):
        """Deserialize a serialized value to a model instance.

        If the parent schema is transient, create a new (transient) instance.
        Otherwise, attempt to find an existing instance in the database.
        :param value: The value to deserialize.
        """
        if not isinstance(value, dict):
            if len(self.related_keys) != 1:
                self.fail(
                    "invalid",
                    value=value,
                    keys=[prop.key for prop in self.related_keys],
                )
            value = {self.related_keys[0].key: value}
        if self.transient:
            return self.related_model(**value)
        try:
            result = self._get_existing_instance(
                self.session.query(self.related_model), value
            )
        except NoResultFound:
            # The related-object DNE in the DB, but we still want to deserialize it
            # ...perhaps we want to add it to the DB later
            return self.related_model(**value)
        return result
def _deserialize(self, value, *args, **kwargs):
        if not isinstance(value, dict):
            if len(self.related_keys) != 1:
                self.fail(
                    "invalid",
                    value=value,
                    keys=[prop.key for prop in self.related_keys],
                )
            value = {self.related_keys[0].key: value}
        if self.transient:
            return self.related_model(**value)
        try:
            result = self._get_existing_instance(
                self.session.query(self.related_model), value
            )
        except NoResultFound:
            # The related-object DNE in the DB, but we still want to deserialize it
            # ...perhaps we want to add it to the DB later
            return self.related_model(**value)
        return result
def _deserialize ( self , value , * args , * * kwargs ) : if not isinstance ( value , dict ) : if len ( self . related_keys ) != 1 : self . fail ( "invalid" , value = value , keys = [ prop . key for prop in self . related_keys ] , ) value = { self . related_keys [ 0 ] . key : value } if self . transient : return self . related_model ( * * value ) try : result = self . _get_existing_instance ( self . session . query ( self . related_model ) , value ) except NoResultFound : # The related-object DNE in the DB, but we still want to deserialize it # ...perhaps we want to add it to the DB later return self . related_model ( * * value ) return result
Deserialize a serialized value to a model instance.

        If the parent schema is transient, create a new (transient) instance.
        Otherwise, attempt to find an existing instance in the database.
        :param value: The value to deserialize.
Deserialize a serialized value to a model instance .