Rails strong params - using fields from has_many object

thanks a lot for your help.

In my rails project I have:

• A location Model that has many :ads

  class Location < ApplicationRecord
      has_many :ads, :dependent => :destroy
  end
  
  

• The Ad Model

• In the controller developer_controller.rb I need to use with strong params the fields from location and ad

   params.require(:location).permit(:country, :location, :ads => [:remote, :days])
  
  

I don't know how to retrieve correctly the fields remote and days from the ad object.

Thanks a lot

Clinton