.htaccess Rewrite to Force Trailing Slash after remove .html - .htaccess

Question

I have the following code in my htaccess file:
Options -Indexes
RewriteEngine On
# Redirect external .php requests to extension less url
RewriteCond %{THE_REQUEST} ^(.+)\.html([#?][^\ ]*)?\ HTTP/
RewriteRule ^(.+)\.html$ http://%{HTTP_HOST}/foo/$1 [R=301,L]
# Resolve .html file for extension less html urls
RewriteRule ^([^/.]+)$ $1.html [L]
That work fine when I go to www.mydomain.com/foo/index whithout .html. I want force trailing Slash at the end of index but i don't know how
Does anyone know how to modify my code to make the trailing slash work ?
Thanks!

Answer 1

To add a trailing slash to your extension less html urls, You need to modify your both of the rules.
In the first rule, we add a trailing at the end of the target url so that a slash is added to all .html requests.
and in the second rule we add a trailing slash at the end of the regex pattern to accept a request with a trailing slash.
Options -Indexes
RewriteEngine On
# Redirect external .php requests to extension less url
RewriteCond %{THE_REQUEST} ^(.+)\.html([#?][^\ ]*)?\ HTTP/
RewriteRule ^(.+)\.html$ http://%{HTTP_HOST}/foo/$1/ [R=301,L]
# Resolve .html file for extension less html urls
RewriteRule ^([^/.]+)/?$ $1.html [L]
Clear your browser's before testing this!
(Hope,this helps!)

Answer 2

I modified my code for this:
Options -Indexes
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.html -f
RewriteRule ^([^/]+)/$ $1.html
RewriteCond %{THE_REQUEST} ^[A-Z]+\ /([^/]+/)*[^.]+\.html(\?[^\ ]*)?\ HTTP/
RewriteRule ^(([^/]+/)*[^.]+)\.html$ http://%{HTTP_HOST}/fr/$1 [R=301,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !(\.[a-zA-Z0-9]{1,5}|/)$
RewriteRule (.*)$ http://%{HTTP_HOST}/fr/$1/ [R=301,L]
It works well