Interning empty string #158
Description
When a model has no non-polymorphism associations, but does have polymorphism associations. It may lead to an exception while trying to convert an empty string (association_name variable) to symbol in the method #association_condition_details (searchlogic/named_scopes/association_conditions.rb#L24)
Step to reproduce:
- Create a model A like above
- Call A.respond_to? :_dump