rails mongoid criteria find by association

Question

I\'m trying to find a record by associated username which is included in a belongs_to relation, but it\'s not working.

Articles belong to Users Users have many artic

Answer 1

You can make it little shorter from what rubish suggested:

user_ids = User.where(username: 'erebus').pluck(:id)
articles = Article.where(:user_id.in => user_ids)

Or one liner:

articles = Article.where(:user_id.in => User.where(username: 'erebus').pluck(:id))