value_for

# File activerecord/lib/active_record/scoping.rb, line 118
        def value_for(scope_type, model, skip_inherited_scope = false)
          return scope_type[model.name] if skip_inherited_scope
          klass = model
          base = model.base_class
          while klass != base
            value = scope_type[klass.name]
            return value if value
            klass = klass.superclass
          end
          scope_type[klass.name]
        end