ruby on rails - How to eagerly load unassociated active model records -

i have 2 models: hurricane , problem , each hurricane has many problem

now in database want let users update data each hurricane, have 1 copy of data set admin , each user has access data. when each user wants update data hurricane, create new copy of admin created record , scope each user sees newly created record modified. , each new record stores , 'original_id' attribute stores id of model cloned from. however, each problem model still point original hurricane record (created admin). should mention each problem belongs_to user

for given user, when listing problems, i'd eagerly load associated hurricanes, , instead of displaying hurricanes point to, i'd eagerly load ones modified

i tried this:

in app/models/problem.rb

class problem < activerecord::base   belongs_to :hurricane   belongs_to :user_hurricane, -> (problem) { "original_id = ? , user_id = ?", problem.hurricane_id, problem.user_id }, class_name: 'hurricane'   ... 

then call think following

problems = problem.includes(:user_hurricanes).where(user_id: current_user.id) problems.each |problem|   puts problem.user_hurricane end # >> returns nil 

but user_hurricane nil, doesn't eagerly load user specific hurricane records. how that?