ids_from_string abstracttion

app/models/additionals_query.rb

@@ -59,7 +59,7 @@ module AdditionalsQuery
   def sql_for_ids_field(_field, operator, value)
     if operator == '='
       # accepts a comma separated list of ids
-      ids = value.first.to_s.scan(/\d+/).map(&:to_i)
+      ids = Additionals.ids_from_string value.first
       if ids.any?
         "#{queried_table_name}.id IN (#{ids.join ','})"
       else

lib/additionals.rb

@@ -47,6 +47,10 @@ module Additionals
       [value, options]
     end
 
+    def ids_from_string(string)
+      string.to_s.scan(/\d+/).map(&:to_i)
+    end
+
     def split_ids(phrase, limit: nil)
       limit ||= Setting.per_page_options_array.first || 25
       raw_ids = phrase.strip_split