Rails: Find where an association doesn't exist and declare variable

Question

I'm going crazy trying to get this to work. I want to loop through a jointable called TriggersUser to see where the user doesn't have a Trigger record (there are only 3 triggers they can have)

if current_user.triggers.any?
    (1..2).each do |n|
     if !current_user.triggers.find(n)
      @next_trigger = Trigger.find(n)
     else
      @next_trigger = Trigger.find(3)
     end
   end
 end

I get this error: Couldn't find Trigger with 'id'=1 [WHERE "triggers_users"."user_id" = ?]

which is perfect, because the user does not have an associated record with trigger_id 1 in the join table. BUT, I want it to now declare a variable @next_trigger = Trigger.find(1)

What am I missing?

TY!!

Answer 1

You should use find_by_id instead of find .

find_by_id simply returns nil when a record does not exist for a given id.

If you use find , then you need to handle the exception. You can do this:

@next_trigger = Trigger.find(n) rescue nil