knex: what is the appropriate way to create an array from results?

Question

I have an endpoint that joins the user and user_emails table as a one-to-many relationship (postgresql). It look as follows.

router.get         


        

Answer 1

Assuming you're using Postgres - you need to use array_agg function to generate arrays. I would suggest using knex.raw

Please let me know if this works.

   knex('users')
    .innerJoin('user_emails','users.id','user_emails.user_id')
    .select([
      'users.id as userID',
      'users.name as userName',
      knex.raw('ARRAY_AGG(user_emails.adress) as email')
    ])
    .groupBy('users.id','users.name')