Query through a join table question

rubyonrails-talk
1

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

2

Try Minisection.find(minisection_id).questions.pluck(:id)

3

Ganesh Ranganathan wrote in post #1138274:

Try Minisection.find(minisection_id).questions.pluck(:id)

That did it! Thanks!!

Dave