Filter trade lists to active users only

I don't have the cute fancy UI with trade list names included, but! Now
the trade ratios should match DTI 2020 and that's nice!

app/controllers/items_controller.rb

@@ -71,9 +71,12 @@ class ItemsController < ApplicationController
         @basic_colored_pet_types_by_species_id = PetType.special_color_or_basic(@item.special_color).
           includes_child_translations.group_by(&:species)
 
+        trading_closet_hangers = @item.closet_hangers.trading.newest.
+          user_is_active.includes(:user)
+
         @trading_closet_hangers_by_owned = {
-          true => @item.closet_hangers.owned_trading.newest.includes(:user),
-          false => @item.closet_hangers.wanted_trading.newest.includes(:user)
+          true => trading_closet_hangers.filter { |c| c.owned? },
+          false => trading_closet_hangers.filter { |c| c.wanted? },
         }
 
         if user_signed_in?

app/models/closet_hanger.rb

@@ -46,20 +46,10 @@ class ClosetHanger < ApplicationRecord
   scope :newest, -> { order(arel_table[:created_at].desc) }
   scope :owned_before_wanted, -> { order(arel_table[:owned].desc) }
   scope :unlisted, -> { where(:list_id => nil) }
-
-  {:owned => true, :wanted => false}.each do |name, owned|
-    scope "#{name}_trading", -> {
-      joins(:user).includes(:list).
-        where(:owned => owned).
-        where((
-          arel_table[:list_id].eq(nil).and(
-            User.arel_table["#{name}_closet_hangers_visibility"].gteq(ClosetVisibility[:trading].id)
-          )
-          ).or(
-          ClosetList.arel_table[:visibility].gteq(ClosetVisibility[:trading].id)
-        ))
+  scope :user_is_active, -> {
+    u = User.arel_table
+    joins(:user).where(u[:last_trade_activity_at].gteq(6.months.ago))
   }
-  end
 
   before_validation :merge_quantities, :set_owned_by_list
 
@@ -74,6 +64,10 @@ class ClosetHanger < ApplicationRecord
     possibly_null_closet_list.trading?
   end
 
+  def wanted?
+    !owned?
+  end
+
   def possibly_null_list_id=(list_id_or_owned)
     if list_id_or_owned.to_s == 'true' || list_id_or_owned.to_s == 'false'
       self.list_id = nil