add fix for deleted post parents

script/fixes/012.rb

@@ -0,0 +1,13 @@
+#!/usr/bin/env ruby
+
+require File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'config', 'environment'))
+
+ActiveRecord::Base.connection.execute("set statement_timeout = 0")
+
+Post.where("is_deleted = true").find_each do |post|
+  parent_id = ActiveRecord::Base.connection.select_value("select parent_id from post_versions where post_id = #{post.id} and parent_id is not null order by updated_at desc limit 1")
+  if parent_id
+    post.update_column(:parent_id, parent_id)
+    ActiveRecord::Base.connection.execute("update posts set has_children = true where id = #{parent_id}")
+  end
+end