Hi, I am trying to do the following database query (ie find all question id's with the selected minisection id): minisection_questions = Question.where(minisection_id: minisection_id).pluck(:id) I have a question table, a minisection table, and a minisections_questions join table. Question model - has_and_belongs_to_many :minisections Minisection model - has_and_belongs_to_many :questions I get the following error: PGError: ERROR: column questions.minisection_id does not exist LINE 1: SELECT id FROM "questions" WHERE "questions"."minisection_i... ^ : SELECT id FROM "questions" WHERE "questions"."minisection_id" = 2 -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/3202d2b108b746f5280797b3d3c43a2e%40ruby-forum.com. For more options, visit https://groups.google.com/groups/opt_out.