diff options
Diffstat (limited to 'railties/guides/source/upgrading_ruby_on_rails.textile')
| -rw-r--r-- | railties/guides/source/upgrading_ruby_on_rails.textile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/railties/guides/source/upgrading_ruby_on_rails.textile b/railties/guides/source/upgrading_ruby_on_rails.textile index 731d56c850..e63548abc9 100644 --- a/railties/guides/source/upgrading_ruby_on_rails.textile +++ b/railties/guides/source/upgrading_ruby_on_rails.textile @@ -34,6 +34,10 @@ h4(#plugins4_0). vendor/plugins Rails 4.0 no longer supports loading plugins from <tt>vendor/plugins</tt>. You must replace any plugins by extracting them to gems and adding them to your Gemfile. If you choose not to make them gems, you can move them into, say, <tt>lib/my_plugin/*</tt> and add an appropriate initializer in <tt>config/initializers/my_plugin.rb</tt>. +h4(#identity_map4_0). IdentityMap + +Rails 4.0 has removed <tt>IdentityMap</tt> from <tt>ActiveRecord</tt>, due to "some inconsistencies with associations":https://github.com/rails/rails/commit/302c912bf6bcd0fa200d964ec2dc4a44abe328a6. If you have manually enabled it in your application, you will have to remove the following config that has no effect anymore: <tt>config.active_record.identity_map</tt>. + h3. Upgrading from Rails 3.1 to Rails 3.2 If your application is currently on any version of Rails older than 3.1.x, you should upgrade to Rails 3.1 before attempting an update to Rails 3.2. |