Add user:owns/wants back to item search

Not so bad, using a condition on `has_many` `through` was a cute trick!!

app/models/item/search/query.rb

@@ -58,6 +58,22 @@ class Item
             filters << (is_positive ?
               Filter.fits(pet_type.body_id, color_name, species_name) :
               Filter.not_fits(pet_type.body_id, color_name, species_name))
+          when 'user'
+            if user.nil?
+              message = I18n.translate('items.search.errors.not_logged_in')
+              raise Item::Search::Error, message
+            end
+            case value
+            when 'owns'
+              filters << (is_positive ?
+                Filter.user_owns(user) :
+                Filter.user_wants(user))
+            when 'wants'
+            else
+              message = I18n.translate('items.search.errors.not_found.ownership',
+                keyword: value)
+              raise Item::Search::Error, message
+            end
           when 'is'
             case value
             when 'nc'
@@ -151,6 +167,14 @@ class Item
         self.new Item.not_fits(body_id), "-fits:#{value}"
       end
 
+      def self.user_owns(user)
+        self.new user.owned_items, 'user:owns'
+      end
+
+      def self.user_wants(user)
+        self.new user.wanted_items, 'user:wants'
+      end
+
       def self.is_nc
         self.new Item.is_nc, 'is:nc'
       end

app/models/user.rb

@@ -6,7 +6,11 @@ class User < ActiveRecord::Base
 
   has_many :closet_hangers
   has_many :closet_lists
-  has_many :closeted_items, :through => :closet_hangers, :source => :item
+  has_many :closeted_items, through: :closet_hangers, source: :item
+  has_many :owned_items, -> { where(ClosetHanger.arel_table[:owned].eq(true)) },
+    through: :closet_hangers, source: :item
+  has_many :wanted_items, -> { where(ClosetHanger.arel_table[:owned].eq(false)) },
+    through: :closet_hangers, source: :item
   has_many :contributions
   has_many :neopets_connections
   has_many :outfits