In DataMapper, when using STI, what causes the error: undefined method 'key' for Object:Class

Asked May 21 '13 at 19:22

Active May 21 '13 at 19:22

Viewed 69 times

I'm getting a very strange error with DM 1.2 and a model that is sub-classed using single-table inheritance (STI):

undefined method `key' for Object:Class

That happens when I do a first query on the base model "User" (User.first) - however, queries on sub-classes of that class work fine (SuperAdmin.first, etc.)

The error occurs in dm-core: lib/dm-core/model.rb:588

I've tried several things including importing an old database, switching to an old branch of the code, etc. Nothing fixed it but one variation I got was:

undefined method `key' for NilClass:Class

asked May 21 '13 at 19:22

mltsy

6,598
3
38
51

Note To Self: When I get the `NilClass:Class` version, the app actually works! But IT's still odd that that throws an exception. – mltsy May 21 '13 at 19:36
Can you please post the code for your models? – Gerard May 22 '13 at 13:16

In DataMapper, when using STI, what causes the error: undefined method 'key' for Object:Class

0 Answers0