# Problem when migrating from rails 2.2.2 to rails 2.3.2 on linux SLES10 + apache 2 **URL:** \ **Category:** Rails\ **Created:** [April 9, 2009, 12:44am UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092 "2009-04-09T00:44:56Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 9, 2009, 12:44am UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/1 "2009-04-09T00:44:56Z")
When I do this migration and I want to launch mongrel\_cluster (mongrel\_rails cluster::start), I get an error : \*\* Starting Mongrel listening at 127.0.0.1:3010 \*\* Starting Rails with production environment… \*\* Mounting Rails at /test… /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active\_support/ dependencies.rb:440:in `load\_missing\_constant’: uninitialized constant ActionController::AbstractRequest (NameError) … No plugins. It’s just a basic rails app showing only the standard index page. Thanks for your help if someone has an idea. ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 9, 2009, 12:45am UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/2 "2009-04-09T00:45:31Z")
On Apr 8, 10:16 pm, Madchipset [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > index page. Definitely sounds like a plugin or monkey patch issue to me - AbstractRequest was a class that disappeared in rails 2.3. I’d start by searching your code for that and see what comes up. Fred ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 9, 2009, 7:21pm UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/3 "2009-04-09T19:21:51Z")
Thanks a lot for your reply Fred. First, I checked with my app : I started it fine without the cluster (script/server -e production) and it worked nice. Then I created a basic app without any plugin (rails test), showing only the standard page Welcome aboard. Again it worked fine without the cluster. When I create it (mongrel\_rails cluster::configure -e production -p 3010 -N 2 -c /my/path/test -a 127.0.01 --prefix /test) and launch it (mongrel\_rails cluster::start) then I get the error reported in log/mongrel.3010.log. So wouldn’it be mongrel\_cluster which causes the problem ? ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 9, 2009, 11:28pm UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/4 "2009-04-09T23:28:18Z")
On Apr 9, 6:17 pm, Madchipset [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Thanks a lot for your reply Fred. First, I checked with my app : I > started it fine without the cluster (script/server -e production) and > it worked nice. Then I created a basic app without any plugin (rails > test), showing only the standard page Welcome aboard. Again it worked > fine without the cluster. When I create it (mongrel\_rails > cluster::configure -e production -p 3010 -N 2 -c /my/path/test -a > 127.0.01 --prefix /test) and launch it (mongrel\_rails cluster::start) > then I get the error reported in log/mongrel.3010.log. So wouldn’it be > mongrel\_cluster which causes the problem ? Did you try a newer version of mongrel ? Fred ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 10, 2009, 3:45pm UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/5 "2009-04-10T15:45:03Z")
I’m using mongrel (1.1.5) and mongrel\_cluster (1.0.5) which seem to be the last versions. I got a bit deeper in the bug analysis. It’s a bit trickiest than I first thought. In fact, I have in my cluster config file (config/mongrel\_cluster.yml) a line : prefix: /my\_app\_name. If I delete this line, the cluster will start alright and I have no more errors ! But I need this line so that in my apache conf file, I use the \ line and the rewrite line (RewriteRule ^/my\_app\_name(.\*)$ balancer://my\_app\_name%{REQUEST\_URI} [P,QSA,L]). It used to work perfectly when I was in rails 2.2.2 Any idea ? Thanks anyway for your kind help. ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 10, 2009, 4:57pm UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/6 "2009-04-10T16:57:06Z")
On Apr 10, 2:44 pm, Madchipset [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > It used to work perfectly when I was in rails 2.2.2 > Ah - mongrel does ``` ActionController::AbstractRequest.relative_url_root = ops ``` [:prefix] if ops[:prefix] if :prefix is set. These days I think you just set on ActionController::Base.relative\_url\_root Give that that’s all the prefix option seems to do, you could not pass it to mongrel and set it in your app’s environment Fred ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 20, 2009, 5:13pm UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/7 "2009-04-20T17:13:53Z")
I finally got the solution on the web… Thanks to P. Leonhardt and C Nolte posts. Here is the workaround : Copy this file in my\_rails\_app/config/initializers : abstract\_request.rb module ActionController class AbstractRequest \< ActionController::Request def self.relative\_url\_root=(path) ActionController::Base.relative\_url\_root=(path) end def self.relative\_url\_root ActionController::Base.relative\_url\_root end end end Hope this may help someone else. Thanks again, my server is working fine now. ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [February 5, 2010, 11:24am UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/8 "2010-02-05T11:24:38Z")
Hi, Thanks, it solved my problem. Although it looks like a hack to me. Isn’t this a bug in mongrel\_service? Should we report it? ## As of today I am using Ruby 1.8.7, Rail 2.3.5 and Rubygems 1.3.5. As for Mongrel: mongrel (1.1.5) and mongrel\_service (0.3.4) and the problem still exists. View this message in context: [http://old.nabble.com/Problem-when-migrating-from-rails-2.2.2-to-rails-2.3.2-on-linux--SLES10-%2B-apache-2-tp22961256p27465916.html](http://old.nabble.com/Problem-when-migrating-from-rails-2.2.2-to-rails-2.3.2-on-linux--SLES10-%2B-apache-2-tp22961256p27465916.html) Sent from the RubyOnRails Users mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![Madchipset](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@Madchipset](https://www.ruby-forum.com/u/Madchipset)\ **Post date:** [April 10, 2009, 5:05pm UTC](https://www.ruby-forum.com/t/problem-when-migrating-from-rails-2-2-2-to-rails-2-3-2-on-linux-sles10-apache-2/165092/9 "2009-04-10T17:05:54Z")
I have 2 rails apps on that server. I didn’t get from your answer what I shall do on the apache conf file and what I shall do on my rails’ apps (and in what file : environment.rb ?) Thanks. On Apr 10, 4:56 pm, Frederick C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)