Can I perform recursive queries?

I have a database with a hierarchical recursive structure. This is what my schema looks like:

@schema.register
class HierarchyChild(SQLAlchemyNode):
    class Meta:
        model = HierarchyModel

@schema.register
class Hierarchy(SQLAlchemyNode):
    class Meta:
        model = HierarchyModel

    children = SQLAlchemyConnectionField(HierarchyChild)

Currently this returns nested results, however, it doesn’t pass the parent context to the child node. Thanks in advanced!

[davidsims9t]

Sure thing. It was pretty simple actually. So I just used:

class Hierarchy(SQLAlchemyObjectType):
    class Meta:
        model = HierarchyModel
        interfaces = (relay.Node, )

    children = SQLAlchemyConnectionField(lambda: Hierarchy)

    def resolve_children(self, args, context, info):
        return HierarchyModel.query.filter(HierarchyModel.parent_tsn.in_([self.tsn])).all()

If I use just use Hierarchy without using lambda, Hierarchy is undefined.

[cliedeman]

Glad you got it working Would you mind pasting a sample for future readers?