model.py 文件源码

def get_by_id(cls, record_id, execute=True):
        """Return a single instance of the model queried by ID.

        Args:
            record_id (int): Integer representation of the ID to query on.

        Keyword Args:
            execute (bool, optional):
                Should this method execute the query or return a query object
                for further manipulation?

        Returns:
            cls | :py:class:`peewee.SelectQuery`:
                If ``execute`` is ``True``, the query is executed, otherwise
                a query is returned.

        Raises:
            :py:class:`peewee.DoesNotExist`:
                Raised if a record with that ID doesn't exist.
        """
        query = cls.base_query().where(cls.id == record_id)

        if execute:
            return query.get()

        return query