index_name being wrong within concern and inheritence

[kgeoir]

Hello,
I have an issue with index_name not beging set properly:

I have a concern with my index definition:

module Searchable
      extend ActiveSupport::Concern

    included do
      include Elasticsearch::Model
      include Elasticsearch::Model::Callbacks

      index_name "my_index_#{Rails.env}"
      end
  end

This concern is used in one AR model using sti this way:

class SuperKlass < ApplicationRecord
  include Searchable
  end

And this class has childs like this one:

class Child1 < SuperKlass
  end

When I try to index, I get error, index child1 does not exist but its index should be "my_index_#{Rails.env}"... In my rails console, I can see that index_name is not properly set:

  2.7.0 :001 > Child1.index_name
 => "child1"

2.7.0 :002 > SuperKlass.index_name
 => "my_index_development"

I try to include the concern in all childs but still it does not work.... I am now adding index_name call in all childs but that's not the purpose of inheritence.... Any idea?