kristianmandrup/acts_as_list_mongoid — comment on commit 5cfd7c1d91d256cc3b463229b3b1d215d0e42045
File:  line 0
By romanbsd:

If configuration[:scope] is Symbol, and the symbol is :_type, then convert :_type to String, and then convert it to Symbol (:_type) and assign back to configuration[:scope]. Am I missing something?