Redirect HTTP to HTTPS with HTTPS subdomain

vhost.conf

NameVirtualHost *:443

<VirtualHost *:80>
   ServerName yourdomain.com
   ServerAlias www.yourdomain.com
   Redirect "/" "https://www.yourdomain.com"
</VirtualHost>

<VirtualHost *:80>
   ServerName staging.yourdomain.com
   DocumentRoot /home/user/public_html/staging.yourdomain.com/current/public
   RailsEnv staging
   <Directory /home/user/public_html/staging.yourdomain.com/current/public>
     AllowOverride all
     Options -MultiViews
   </Directory>
</VirtualHost>

<VirtualHost *:443>
   ServerName www.yourdomain.com
   ServerAlias yourdomain.com
   DocumentRoot /var/www/public_html/www.yourdomain.com/current/public
   RailsEnv production
   <Directory /home/gom/public_html/www.yourdomain.com/current/public>
     AllowOverride all
     Options -MultiViews
   </Directory>

   SSLEngine on
   SSLCertificateFile /etc/apache2/ssl/your-ssl-cert.crt
   SSLCertificateKeyFile /etc/apache2/ssl/your-ssl-key.key
   SSLCertificateChainFile /etc/apache2/ssl/your-chain-file.crt
</VirtualHost>

<VirtualHost *:443>
   ServerName staging.yourdomain.com
   ServerAlias staging.yourdomain.com
   DocumentRoot /var/www/public_html/staging.yourdomain.com/current/public
   RailsEnv staging
   <Directory /var/www/public_html/staging.yourdomain.com/current/public>
     AllowOverride all
     Options -MultiViews
   </Directory>

   SSLEngine on
   SSLCertificateFile /etc/apache2/ssl/your-ssl-cert.crt
   SSLCertificateKeyFile /etc/apache2/ssl/your-ssl-key.key
   SSLCertificateChainFile /etc/apache2/ssl/your-chain-file.crt
</VirtualHost>