apache + passenger just listing files in public dir - ruby-on-rails

Question

<VirtualHost *:80>
# ... server name/aliases and such.
DocumentRoot /var/www/html
RackEnv staging
RackBaseURI /extapp/forms
<Directory /var/www/html/extapp/forms>
Options -MultiViews
PassengerRuby /home/pstn/.rbenv/versions/2.1.2/bin/ruby
</Directory>
</VirtualHost>
/var/www/html/extapp/forms is a symlink linking to the public folder of a rails 4 application, all permissions for the directory tree are correct (r+w).
Passenger boots, as per the entry in the logs:
[ 2014-09-08 14:07:17.5896 21559/7f8d77305720 agents/Watchdog/Main.cpp:728 ]: All Phusion Passenger agents started!
However, when I visit the appropriate path, all I get is a directory listing of the files residing in the public folder (i.e. robots.txt et. al.)

Answer 1

Try this
<Directory /var/www/html/extapp/forms>
Options -MultiViews
PassengerRuby /home/posten/.rbenv/versions/2.1.2/bin/ruby
PassengerResolveSymlinksInDocumentRoot on
</Directory>
Then restart the server.
My server config is
<VirtualHost *:80>
# The ServerName directive sets the request scheme, hostname and port that
# the server uses to identify itself. This is used when creating
# redirection URLs. In the context of virtual hosts, the ServerName
# specifies what hostname must appear in the request's Host: header to
# match this virtual host. For the default virtual host (this file) this
# value is not decisive as it is used as a last resort host regardless.
# However, you must set it for any further virtual host explicitly.
#ServerName www.example.com
ServerName mysite
RailsEnv development
DocumentRoot /var/www/mysite/public
<Directory /var/www/mysite/public>
Allow from all
Options -MultiViews
PassengerResolveSymlinksInDocumentRoot on
</Directory>
# Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
# error, crit, alert, emerg.
# It is also possible to configure the loglevel for particular
# modules, e.g.
#LogLevel info ssl:warn
ErrorLog ${APACHE_LOG_DIR}/ruby-error.log
CustomLog ${APACHE_LOG_DIR}/ruby-access.log combined
# For most configuration files from conf-available/, which are
</VirtualHost>