Method default_querystrings

piccolo/query/methods/objects.py:460–488

(self)

    @property
    def default_querystrings(self) -> Sequence[QueryString]:
        select = Select(table=self.table)

        for attr in (
            "as_of_delegate",
            "limit_delegate",
            "where_delegate",
            "offset_delegate",
            "output_delegate",
            "order_by_delegate",
            "lock_rows_delegate",
        ):
            setattr(select, attr, getattr(self, attr))

        if self.prefetch_delegate.fk_columns:
            select.columns(*self.table.all_columns())
            for fk in self.prefetch_delegate.fk_columns:
                if isinstance(fk, ForeignKey):
                    select.columns(*fk.all_columns())
                else:
                    raise ValueError(f"{fk} doesn't seem to be a ForeignKey.")

                # Make sure that all intermediate objects are fully loaded.
                for parent_fk in fk._meta.call_chain:
                    select.columns(*parent_fk.all_columns())

            select.output_delegate.output(nested=True)

        return select.querystrings

    ###########################################################################