beam-validator doesn't like non-keywords as model names

[quile]

This seems to have appeared in the newest core (0.8.6?).

This code used to work:

(model/db #(model/pick "cheese" {:where {:id 2}}))

but now it explodes:

NullPointerException   caribou.model/beam-validator (model.clj:1897)

whereas this works:

(model/db #(model/pick :cheese {:where {:id 2}}))

I think it should allow strings, as we are dealing with model slugs coming in from URLs and query strings.

[noisesmith]

Fix pushed, along with unit test that verifies the fix of the issue as described.

[quile]

Sounds good.