Having problems adding '/' to end of URI - php

Question

Right now i have a url which is like
http://www.example.com/customer/login
i want the URI to always have a ending trail because ill use redirects with ../
and if it doesnt have slash it messes everything up if it has a slash it works fine. I tried to look at some examples online but i couldnt really get anything to work heres my current .htaccess file
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?rt=$1 [QSA]

Answer 1

Anubhava's got the basic answer and I modded him up. You need to send an HTTP redirect to get the browser to request the URL with the / at the end.
To merge with your existing rewrite rules, you should do:
RewriteEngine on
# First check it's not a file
RewriteCond %{REQUEST_FILENAME} !-f
# And it doesn't end in /
RewriteCond %{REQUEST_URI} !.*/$
# Send the redirect. I would do 301 (permanent) here
# the "L" means the rest of the rules are ignored for this request
RewriteRule ^(.*)$ $1/ [L,R=301]
# Now pass thru to your old ruleset URLs the slash-checker didn't catch
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?rt=$1 [QSA]

Answer 2

How about this:
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteRule ^(.*)$ $1/ [L,R=302]

Answer 3

Try using following rules
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?rt=$1 [QSA]
#following rule checks if url is not ending with / and
#if not then redirected to url which is ending with /
RewriteCond %{REQUEST_URI} !.*/$
RewriteRule ^(.*)$ $1/ [R=302,L]