How to install and use modules in SilverStripe

Question

Using SilverStripe I want to use multi-select drop down on my page.

How can I install and use modules to do this?

Answer 1

General approach of installing a module in SilverStripe:

• Prerequisite: As always, back up your database.
• Log into your site as admin. I'm always doing this first, in case any changes prohibit a log in later on (normally if you change your existing code, but logging in first never hurts).
• Unpack the module and put it into your installation's base folder (where sapphire, cms, mysite,... are).
• Make sure the folder is named correctly, this should be described in the download. If there is no specific description, leave the name as it is after unpacking. There shouldn't be a version number in the folder name.
• Go to http://yoursite.com/dev/build?flush=all - that will sync your database with your code.
• You're good to use the module...