Home/ Questions/Q 894635
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-15T14:25:29+00:00

I have a User model that has_many :posts. If I wanted to make a

  • 0

I have a User model that has_many :posts. If I wanted to make a named_scope for finding users with at least one post would this be correct?

   named_scope :at_least_one_post, :joins => :posts, :group => "users.id"

or should I take it a step further and do

   named_scope :at_least_one_post, :joins => :posts, :group => "users.id", :having => "COUNT(posts.id) > 0"
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Actually I don’t think it is necessary to group or add the condition. Because you are using the :joins, that will do an INNER JOIN and will therefore only pull users with posts. If you were going to do an :include, that would LEFT JOIN and you would need to add a HAVING clause.

    So all you should need is 

    named_scope :at_least_one_post, :joins => :posts
    • 0