Extract method to reset default settings

app/models/setting.rb

@@ -121,5 +121,9 @@ class Setting < ApplicationRecord
         "youtube_handle": nil
       }
     end
+
+    def reset_defaults
+      defaults.each { |name, value| self[name] = value }
+    end
   end
 end

db/seeds.rb

@@ -7,9 +7,7 @@ if Administrator.count == 0 && !Rails.env.test?
   admin.create_administrator
 end
 
-Setting.defaults.each do |name, value|
-  Setting[name] = value
-end
+Setting.reset_defaults
 
 WebSection.create(name: "homepage")
 WebSection.create(name: "debates")