Alias and mod_rewrite

Question

I'm trying to get Symfony1.4 and Symfony2 working on the same host in Apache (2.2.22) - I think the problem is that both are using mod_rewrite to direct the request to a php controller/script. Here is my config

httpd.conf

# Symfony 1.4
<VirtualHost *:80>
  DocumentRoot "d:/wamp/www/wlnew/web"
  DirectoryIndex index.php
  <Directory "d:/wamp/www/wlnew/web">
    AllowOverride All
    Allow from All
  </Directory>

  Alias /sf d:/wamp/www/wlnew/lib/vendor/symfony/data/web/sf
  <Directory "d:/wamp/www/wlnew/lib/vendor/symfony/data/web/sf">
    AllowOverride All
    Allow from All
  </Directory>
</VirtualHost>
# Symfony 2
Alias /another "d:/wamp/www/another/web/"
<Directory "d:/wamp/www/another/web">
    Options Indexes FollowSymlinks
    AllowOverride All
    Order allow,deny
    Allow from all
</Directory>

And then each version of Symfony has a .htaccess which is used to re-write the request

Symfony 1 .htaccess

Options +FollowSymLinks +ExecCGI
<IfModule mod_rewrite.c>
  RewriteEngine On

  RewriteRule ^$ index.html [QSA]
  RewriteRule ^([^.]+)$ $1.html [QSA]
  RewriteCond %{REQUEST_FILENAME} !-f

  # no, so we redirect to our front web controller
  RewriteRule ^(.*)$ index.php [QSA,L]
</IfModule>

Symfony 2 .htaccess

<IfModule mod_rewrite.c>
    RewriteEngine On

    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^(.*)$ app.php [QSA,L]
</IfModule>

I want to be able to use localhost/ to redirect to Symfony 1 front controller index.php but when I use localhost/another all requests should be forwarded to the symfony2 front controller app.php but they aren't - they are forwarded to the symfony1 front controller (index.php). If I use the file name of the controller for Symfony2 it works ie localhost/another/app.php

How can I get apache to forward requests to the Symfony2 controller when i use the /another alias ?

Update

I enabled logging of rewrite logging ... this is what I got :

[perdir D:/wamp/www/another/web/] strip per-dir prefix: D:/wamp/www/another/web/ -> 
[perdir D:/wamp/www/another/web/] applying pattern '^(.*)$' to uri ''
[perdir D:/wamp/www/another/web/] RewriteCond: input='D:/wamp/www/another/web/' pattern='!-f' => matched
[perdir D:/wamp/www/another/web/] rewrite '' -> 'app.php'
[perdir D:/wamp/www/another/web/] add per-dir prefix: app.php -> D:/wamp/www/another/web/app.php
[perdir D:/wamp/www/another/web/] internal redirect with D:/wamp/www/another/web/app.php [INTERNAL REDIRECT]
[perdir D:/wamp/www/wlnew/web/] add path info postfix: D:/wamp/www/wlnew/web/wamp -> D:/wamp/www/wlnew/web/wamp/www/another/web/app.php
[perdir D:/wamp/www/wlnew/web/] strip per-dir prefix: D:/wamp/www/wlnew/web/wamp/www/another/web/app.php -> wamp/www/another/web/app.php
[perdir D:/wamp/www/wlnew/web/] applying pattern '^$' to uri 'wamp/www/another/web/app.php'
[perdir D:/wamp/www/wlnew/web/] add path info postfix: D:/wamp/www/wlnew/web/wamp -> D:/wamp/www/wlnew/web/wamp/www/another/web/app.php
[perdir D:/wamp/www/wlnew/web/] strip per-dir prefix: D:/wamp/www/wlnew/web/wamp/www/another/web/app.php -> wamp/www/another/web/app.php
[perdir D:/wamp/www/wlnew/web/] applying pattern '^([^.]+)$' to uri 'wamp/www/another/web/app.php'
[perdir D:/wamp/www/wlnew/web/] add path info postfix: D:/wamp/www/wlnew/web/wamp -> D:/wamp/www/wlnew/web/wamp/www/another/web/app.php
[perdir D:/wamp/www/wlnew/web/] strip per-dir prefix: D:/wamp/www/wlnew/web/wamp/www/another/web/app.php -> wamp/www/another/web/app.php
[perdir D:/wamp/www/wlnew/web/] applying pattern '^(.*)$' to uri 'wamp/www/another/web/app.php'
[perdir D:/wamp/www/wlnew/web/] RewriteCond: input='D:/wamp/www/wlnew/web/wamp' pattern='!-f' => matched
[perdir D:/wamp/www/wlnew/web/] rewrite 'wamp/www/another/web/app.php' -> 'index.php'
[perdir D:/wamp/www/wlnew/web/] add per-dir prefix: index.php -> D:/wamp/www/wlnew/web/index.php
[perdir D:/wamp/www/wlnew/web/] strip document_root prefix: D:/wamp/www/wlnew/web/index.php -> /index.php
[perdir D:/wamp/www/wlnew/web/] internal redirect with /index.php [INTERNAL REDIRECT]
[perdir D:/wamp/www/wlnew/web/] strip per-dir prefix: D:/wamp/www/wlnew/web/index.php -> index.php
[perdir D:/wamp/www/wlnew/web/] applying pattern '^$' to uri 'index.php'
[perdir D:/wamp/www/wlnew/web/] strip per-dir prefix: D:/wamp/www/wlnew/web/index.php -> index.php
[perdir D:/wamp/www/wlnew/web/] applying pattern '^([^.]+)$' to uri 'index.php'
[perdir D:/wamp/www/wlnew/web/] strip per-dir prefix: D:/wamp/www/wlnew/web/index.php -> index.php
[perdir D:/wamp/www/wlnew/web/] applying pattern '^(.*)$' to uri 'index.php'
[perdir D:/wamp/www/wlnew/web/] RewriteCond: input='D:/wamp/www/wlnew/web/index.php' pattern='!-f' => not-matched
[perdir D:/wamp/www/wlnew/web/] pass through D:/wamp/www/wlnew/web/index.php

It seems that the .htaccess for the Symfony2 (/another) is being read and redirects to app.php but then reads the other .htaccess and then redirects to index.php ... How can i get the rewrite to stop at app.php

Answer 1

It seems the configuration requires RewriteBase needs to be set for both the .htaccess.

RewriteBase /another

This should work. This link helped in this answer.

Also, here are some notes through our discussion on chat on how other settings can affect and how RewriteCond can rectify infinite internal redirect loops. Might help other people. Overall, mod_rewrite is one difficult module.

Answer 2

Try to move the Symfony 2 alias inside the VirtualHost and add another DirectoryIndex for sf2:

<VirtualHost *:80>
  # Symfony 1.4
  DocumentRoot "d:/wamp/www/wlnew/web"
  <Directory "d:/wamp/www/wlnew/web">
    DirectoryIndex index.php
    AllowOverride All
    Allow from All
  </Directory>

  Alias /sf d:/wamp/www/wlnew/lib/vendor/symfony/data/web/sf
  <Directory "d:/wamp/www/wlnew/lib/vendor/symfony/data/web/sf">
    AllowOverride All
    Allow from All
  </Directory>

  # Symfony 2
  Alias /another "d:/wamp/www/another/web/"
  <Directory "d:/wamp/www/another/web">
    DirectoryIndex app.php
    Options Indexes FollowSymlinks
    AllowOverride All
    Order allow,deny
    Allow from all
  </Directory>
</VirtualHost>