Rails按值和数组排序哈希

Question

I had array of users, and array of they id's. I'm need create hash with {name => id}, but with order of id's array. As example, when i wrote:

keys = [5, 3, 2, 4, 1]
users = User.all.where(id: keys).pluck(:name, :id).to_h

It's return me {"User_1"=>2, "User_2"=>3, "User_3"=>4, "User_4"=>5, "User_0"=>1}

But i'm need to get such thing:

{"User_4"=>5, "User_2"=>3, "User_1"=>2, "User_3"=>4, "User_0"=>1}

Is there opportunity to had such hash on where operation?

Answer 1

The array of users that you get from your database is ordered by the updated_at column. Try this:

users = User.where(id: keys).order(id: :desc).pluck(:name, :id).to_h