silverstripe-framework/docs/en/installation/upgrading.md

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Upgrading

Usually an update or upgrade your SilverStripe installation just means overwriting files and updating your database-schema. Please see your upgrade notes and changelogs.

Process

Never update a website on the live server without trying it on a development copy first.

  • Check if any modules (e.g. blog or forum) in your installation are compatible and need to be upgraded as well

  • Backup your database

  • Backup your website

  • Download the new release and uncompress it to a temporary folder

  • Leave custom folders like mysite or themes in place.

  • Identify system folders in your webroot (cms, framework and any additional modules).

  • Delete existing system folders (or move them outside of your webroot)

  • Extract and replace system folders from your download (Deleting instead of "copying over" existing folders ensures that files removed from the new SilverStripe release are not persisting in your installation)

  • Visit http://yoursite.com/dev/build/?flush=1 to rebuild the website Database

  • Check if you need to adapt your code to changed APIs

  • Check if you need to adapt your code to changed CSS/HTML/JS

  • See common-problems for a list of likely mistakes that could happen during an upgrade.

Decision Helpers

How easy will it be to update my project? It's a fair question, and sometimes a difficult one to answer. This page is intended to help you work out how hard it will be to upgrade your site.

  • If you've made custom branches of the core, or of a module, it's going to be harder to upgrade.
  • The more custom features you have, the harder it will be to upgrade. You will have to re-test all of those features and some of them may have broken.
  • Customisations of a well defined type - such as custom page types or custom blog widgets - are going to be easier to upgrade than customisations that use sneaky tricks, such as the subsites module.