Order records in table by other table column

Question

I have 3 tables: articles , people and person_mentions .

Article model has_many :people, through: person_mentions and so on.

In person_mentions table I have 3 columns article_id , person_id and mention_order . mention_order is an integer.

I need to find all people, who mentioned in article and order them by mention_order , but when I run

@article.people.order(mention_order: :asc)

I get an error

column people.mention_order does not exist

So, I need to make a query from people table with mention_order from person_mentions in it.

Thanks for any help!

Answer 1

你能尝试一下：

@article.people.order("person_mentions.mention_order asc")