no nodes getting a depth of more than 0

[birarda]

I have a model Place that has a column pointee_id. I use pointee for a polymorphic association, but would like to use closure_tree to get ancestry for the place up to the root. pointee_id typically refers to a place, which allows for the tree structure. Eventually it will point to a different model, and this becomes my root node. I've written a has_many through association to get that root model (since I don't expect closure tree to be able to grab this for me, it's checking the Place model).

The issue I'm having is that after Place.rebuild! or a place update to point to another place, doesn't seem to add the hierarchy properly to the place_hierarchies database. It adds the record for each place that points to itself #<PlaceHierarchy ancestor_id: "7315a306-8c46-449e-91c9-6ce690d050f3", descendant_id: "7315a306-8c46-449e-91c9-6ce690d050f3", generations: 0> but nothing else. All of my PlaceHierarchy records have generations = 0.

Some of the closure tree methods work - I can find the parent and the children properly - but since all records in place_hierarchies have generations = 0, I can't find any ancestors for the node.

My model has the following:

class Place < ActiveRecord::Base
  has_closure_tree parent_column_name: 'pointee_id' 

I ran the closure tree migration for the Place model.

[mceachen]

closure_tree only supports STI polymorphism. In other words, the parent foreign key column must be a to foreign key to the same table. See http://api.rubyonrails.org/classes/ActiveRecord/Base.html#class-ActiveRecord::Base-label-Single+table+inheritance