I looked at changing find_by_id to find; however, since the find is on the filters relationship, the error generated on failure is inconsistent with what it would be if it were on the @view directly.

E.g.
filters.find_by_id: "Couldn't find Filter with id=2"
filters.find: "Couldn't find Katello::Filter with id=2 [WHERE \"katello_filters\".\"content_view_id\" = 2]"