Uncaught Error: compare on non-nil objects of different types about datascript HOT 3 CLOSED

Underscores sure are a problem. When you write [:db/add X :test/_bar Y] it reads backwards, meaning “put a reference from Y to X via :test/bar property”. So it expects both X and Y to be integers. In your case, you put hashmap at Y pos, and that wouldn’t work as an entity id.

So two problems for me to fix here:

1. Error message should be improved (sorry about that)

2. Error should be thrown in second case (you don’t get it here by pure luck):

   (d/transact! conn [{:db/id -1 :test/_bar {:baz "qux"}}])

from datascript.

@tonsky Okay, thanks. I'll have to read the Datomic docs about this. I don't get any error when there's only a single attribute (like no. 2 above).

from datascript.

datomic allows to specify maps when creating nested relation, but ds does not support this feature yet. what about backward relation, I'm no sure that even datomic supports that=

from datascript.