Fix #4629: Tag renames/aliases should also modify pool descriptions.

app/logical/tag_mover.rb

@@ -139,9 +139,10 @@ class TagMover
     User.rewrite_blacklists!(old_tag.name, new_tag.name)
   end
 
-  # Update any wiki pages linking to the old tag, to link to the new tag.
+  # Update any wiki pages or pools linking to the old tag, to link to the new tag.
   def rewrite_wiki_links!
     WikiPage.rewrite_wiki_links!(old_tag.name, new_tag.name)
+    Pool.rewrite_wiki_links!(old_tag.name, new_tag.name)
   end
 
   # Merge two artist entries, copying everything from the old entry to the new

app/models/pool.rb

@@ -254,4 +254,10 @@ class Pool < ApplicationRecord
       errors.add(:name, "cannot contain only digits")
     end
   end
+
+  def self.rewrite_wiki_links!(old_name, new_name)
+    Pool.linked_to(old_name).each do |pool|
+      pool.lock!.update!(description: DText.rewrite_wiki_links(pool.description, old_name, new_name))
+    end
+  end
 end

app/models/wiki_page.rb

@@ -212,12 +212,8 @@ class WikiPage < ApplicationRecord
   end
 
   def self.rewrite_wiki_links!(old_name, new_name)
-    broken_wikis = WikiPage.linked_to(old_name)
-
-    broken_wikis.each do |wiki|
-      wiki.lock!
-      wiki.body = DText.rewrite_wiki_links(wiki.body, old_name, new_name)
-      wiki.save!
+    WikiPage.linked_to(old_name).each do |wiki|
+      wiki.lock!.update!(body: DText.rewrite_wiki_links(wiki.body, old_name, new_name))
     end
   end