I am struggling ordering my loop through my Devise Users by the upvotes on tools
created by them.
Inside of that loop I get the value I would like to use to order the elments with:
user.tools.map(&:cached_votes_up).sum
That's my loop:
- @users.order(user.tools.map(&:cached_votes_up).sum).each do |user| #incorrect!
And my controller:
@users = User.all
Without order
in my loop everything runs fine, with it this error appears:
NoMethodError in Users#index
Showing c:/Users/Jonas/gitapps/ocubit/app/views/users/index.html.haml where line #21 raised:
undefined method `tools' for #<Class:0xac2db78>
I am grateful for each help!
您可以使用joins
@users = User.joins(:tools).group("users.id").order("SUM(tools.cached_votes_up)")
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.