Rewrite urls to not include file extensions but allow subdomains to act normally

Question

I need to

• Remove the file extension from all of the urls on my site (mywebsite.com/about.html >> mywebsite.com/about/)

• Always add a trailing / to the end of the url (mywebsite.com/about >> mywebsite.com/about/)

• Allow for an exception that one of the nav items links to a pdf, not an html document (mywebsite.com/calendar.pdf >> mywebsite.com/calendar/

• Allow subdomains to go to their folder instead of being rewritten (My folder tree is public_html>my main site files and a dev folder>(inside dev folder) index.html) I need the subdomain to link to that dev folder, currently the url rewriting changes dev.mywebsite.com to public_html/dev.html

This is my current, hacked together htaccess file:

RewriteEngine On
RewriteRule ^calendar/?$ files/2013-2014_calendar.pdf
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^/]+)/$ $1.html
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !(\.[a-zA-Z0-9]{1,5}|/)$
RewriteRule (.*)$ /$1/ [R=301,L]

Sorry, this might be a duplicate or semi-duplicate. I looked around as much as I could but couldn't find anything that applied to my situation exactly or that I understood. Thanks guys!

Answer 1

Try this code:

RewriteEngine On
RewriteBase /

# skip dev. subdomain
RewriteCond %{HTTP_HOST} ^dev\. [NC]
RewriteRule ^ - [L]

# calendar rule
RewriteRule ^calendar/?$ files/2013-2014_calendar.pdf [L]

# hide .html rules
RewriteCond %{THE_REQUEST} \s/+(.+?)\.html[\s?] [NC]
RewriteRule ^ %1/ [R=301,L,NE]

# add a trailing slash
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule [^/]$ %{REQUEST_URI}/ [L,R=301]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{DOCUMENT_ROOT}/$1.html -f
RewriteRule ^(.+?)/?$ $1.html [L]