add pet state replacement task

app/models/pet_state.rb

@@ -135,6 +135,18 @@ class PetState < ActiveRecord::Base
     end
   end
 
+  def replace_with(other)
+    PetState.transaction do
+      count = outfits.count
+      outfits.find_each { |outfit|
+        outfit.pet_state = other
+        outfit.save!
+      }
+      destroy
+    end
+    count
+  end
+
   def self.from_pet_type_and_biology_info(pet_type, info)
     swf_asset_ids = []
     info.each do |zone_id, asset_info|

lib/tasks/pet_states.rake

@@ -0,0 +1,13 @@
+namespace :pet_states do
+  desc "Sort pet state SWFs, then remove duplicates and reassign children"
+  task :repair => :environment do
+    PetState.repair_all!
+  end
+
+  desc "Delete the bad pet state, replacing it in outfits with the good pet state"
+  task :replace, [:bad_id, :good_id] => :environment do |t, args|
+    bad, good = PetState.find(args[:bad_id], args[:good_id])
+    outfit_count = bad.replace_with(good)
+    puts "Updated #{outfit_count} outfits"
+  end
+end

lib/tasks/repair_pet_states.rake

@@ -1,6 +0,0 @@
-namespace :pet_states do
-  desc "Sort pet state SWFs, then remove duplicates and reassign children"
-  task :repair => :environment do
-    PetState.repair_all!
-  end
-end