move ids_from_string to query instance

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 = Additionals.ids_from_string value.first
+      ids = ids_from_string value.first
       if ids.any?
         "#{queried_table_name}.id IN (#{ids.join ','})"
       else

lib/additionals.rb

@@ -47,10 +47,6 @@ 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

lib/additionals/patches/query_patch.rb

@@ -61,6 +61,10 @@ module Additionals
           @available_filters
         end
 
+        def ids_from_string(string)
+          string.to_s.scan(/\d+/).map(&:to_i)
+        end
+
         def export_limit
           Setting.issues_export_limit.to_i
         end