Question

I want to compare @question.id with value in a database table Work. How can I do that inside the show action of the question controller?

I want to compare @question.id with @community.community_activity, but when I do that inside the question controller the @community is nil:

You have a nil object when you didn't expect it!
The error occurred while evaluating nil.community_activity

How to tackle this???

if @question.id != @community.community_activity.for_communities(60).object_id and current_user.role.title.strip == "Test" 
  redirect_to 'public/access_denied.html'
  return

Answer 1

Based on what you are showing us, all I can suggest is the following:

if @community.nil? || (@question.id != @community.community_activity.for_communities(60).id && current_user.role.title.strip == "Test")
  redirect_to '/access_denied.html'
  return
end

Or maybe this is more appropriate:

if (@community.nil? || @question.id != @community.community_activity.for_communities(60).id) && current_user.role.title.strip == "Test"
  redirect_to '/access_denied.html'
  return
end