apache RewriteRule not working - apache

Question

I have this url http://www.example.com/Courses/get/38789/my-course, i added this rule to the .htaccess file
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/Courses/get
RewriteRule ^Courses/get/(.*)/(.*)$ course-$1-$2 [R=301,L]
but when i go to http://www.example.com/Courses/get/38789/my-course nothing happens, i stay on the same page, there is no redirect.
p.s the link is just an example not the actual link

Answer 1

A more efficient method would be to use the following:
RewriteRule ^Courses/get/(\d+)/([^/]+)/?$ /course-$1-$2 [R=301,L]
Now, keep in mind that this rule should come before any rules that may rewrite the request to, say, an index.php file. This would be naturally true if the code you posted in your question was all of your code. If not, please post your entire .htaccess file so we can be sure it is being placed in the right location.
Be sure the mod_rewrite is turned on, and the you have set AllowOverride All in your virtual host/Apache site configuration. If you're running on a shared production server, this would not apply to you.
Side note: Whilst it does work, you need not use RewriteEngine on twice - only once at the beginning of your file will suffice. You also do not need RewriteCond %{REQUEST_URI} ^/Courses/get - it is essentially redundant as you are already using an expression to test against the request.