Which is better?

alternative_1.rb

# admin/real_estate_companies.rb
ActiveAdmin.register RealEstateCompany do
  form do |f|
    f.inputs do
      f.input :vendors, collection: Vendor.sorted_by_name
    end
  end
end

# models/vendor.rb
class Vendor
  scope :sorted_by_name, order(:name)
end

alternative_2.rb

# admin/real_estate_companies.rb
ActiveAdmin.register RealEstateCompany do
  form do |f|
    f.inputs do
      f.input :vendors, collection: Vendor.sorted_for_real_estate_companies_admin
    end
  end
end

# models/vendor.rb
class Vendor
  scope :sorted_for_real_estate_companies_admin, order(:name)
end