How to do N: N join in rails - ruby-on-rails

Question

user table
user.find(1)
id: 3,
name: 'hoge',
gender: 0
org_users table
user.find(1).org_users
id: 1,
org_id: 1,
user_id: 3,
status: 'in progress'
I would like to do inner join the above two tables as follows:
id: 3,
name: 'hoge',
gender: 0,
status: 'in progress'
I thought I could do it with the following command, but for some reason I can't see the result of the org_users table
User.joins(:org_users).select("org_users.*, users.*")
result:
User.joins(:org_users).select("org_users.*, users.*")
User Load (0.6ms) SELECT org_users.*, users.* FROM `users` INNER JOIN `org_users` ON `org_users`.`user_id` = `users`.`id` LIMIT 11
=> #<ActiveRecord::Relation [#<User id: 1, name: "hoge", gender: 0, created_at: "2019-12-20 14:00:38", updated_at: "2019-12-20 14:00:38">]>
SELECT org_users., users. FROM users INNER JOIN org_users ON org_users.user_id = users.id LIMIT 11
If the generated query is directly hit to mysql, the information of org_users will appear
I don't know why the two results are different.
please let me know if there is anything i misunderstood.
My source code is at the following URL
https://github.com/negabaro/railsTestJoins
The model configuration is as follows.
app/models/org.rb
class Org < ApplicationRecord
has_many :org_users
has_many :users, through: :org_users
end
app/models/org_user.rb
class OrgUser < ApplicationRecord
belongs_to :org
belongs_to :user
end
app/models/user.rb
class User < ApplicationRecord
has_many :org_users
has_many :orgs, through: :org_users
end

Answer 1

users = User.joins(:org_users).select('users.id, users.name, users.gender, org_users.status')
Will do the trick. It will generate something like this:
#<User:0x00005649f318dc68 id: user_id, name: name ... and so on>
You can do users.first.attributes and it will show you desired hash:
{
id: id,
name: name,
gender: gender,
status: status
}