Question

I have the following in my htaccess file:

RewriteEngine On
RewriteBase /

# Check to see if the URL points to a valid file
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

# Trailing slash check
RewriteCond %{REQUEST_URI} !(.*)/$

# Add slash if missing & redirect
RewriteRule ^(.*)$ $1/ [L,R=301]

# Check to see if the URL points to a valid file
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

# Send to index.php for clean URLs
RewriteRule ^(.*)$ index.php?/$1 [L]

This does work. It hides index.php, and it adds a trailing slash… except when there is a query string.

This URL:

http://example.com/some-page

gets redirected to:

http://example.com/some-page/

but this URL:

http://example.com/some-page?some-var=foo&some-other-var=bar

does not get redirected. I would like for the above to be sent to:

http://example.com/some-page/?some-var=foo&some-other-var=bar

I’ve reached the limits of my understanding of redirects with this. If you have a working answer, I would really appreciate a walkthrough of what every line is doing and why it works. Double bonus awesomeness for an explanation of why what I have right now doesn’t work when there is a query string involved.

Answer 1

Try adding a [QSA] to the end of the last Redirect rule to preserve the original query string as below

# Send to index.php for clean URLs, preserve original query string
RewriteRule ^(.*)$ index.php?/$1 [L,QSA]

a walkthrough of what every line is doing and why it works.

See my comments below

#turn mod_rewrite engine on.
RewriteEngine On
#set the base for urls here to /
RewriteBase /

### if the is not a request for an existing file or directory
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

### and the URI does not end with a /
RewriteCond %{REQUEST_URI} !(.*)/$

### redirect and add the slash. 
RewriteRule ^(.*)$ $1/ [L,R=301]

### if the is not a request for an existing file or directory
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

# rewrite to index.php passing the URI as a path, QSA will preserve the existing query string
RewriteRule ^(.*)$ index.php?/$1 [L,QSA]