Question

I have this in my models/comment.rb
However it returns error when the user was deleted.
How can I make it return ‘Not Found User’ when the user was deleted?

models/comment.rb

  def self.last_comment_nickname
    order("id").last.user.profile.nickname
  end

Answer 1

Use the andand gem:

def self.last_comment_nickname
  order("id").last.user.andand.profile.andand.nickname || "Not Found User"
end

Or just write code; honestly if you’re not sure how to check a value for null I’m afraid just telling you would do more harm than good in the long run.

Although I might delegate profile methods to the user.