Rails, ActiveRecord, query id in array of ints, keep order of passed array

Question

I am thinking about the best solution for a problem. Let\'s say that we have a list of ids of ActiveRecord model:

ids = [1, 100, 5, 30, 4, 2, 88, 44]
         


        

Answer 1

If you are using Postgres you can use intarray

class User < ActiveRecord::Base
  def self.find_in_order(ids)
    self.where(id: ids).order("idx(array[#{ids.join(',')}], id)")
  end
end

you should init module first

CREATE EXTENSION intarray