silverstripe-framework/docs/en/04_Changelogs/4.6.0.md

4.6.0 (Unreleased)

Overview

• MySQL tables are auto-converted from MyISAM to InnoDB
• Editing files directly in the insert-media modal

MySQL tables are auto-converted from MyISAM to InnoDB

Beginning with 4.4.0, our minimum requirement for MySQL is 5.6 (since MySQL 5.5 end of life reached in December 2018). Starting with MySQL 5.6, InnoDB is the new default storage engine, replacing the older MyISAM engine.

Silverstripe CMS already creates InnoDB tables by default, mainly in order to benefit from their better support for database transactions. Before MySQL 5.6, InnoDB didn't have a FULLTEXT search index, requiring us to enforce the MyISAM engine when devs opted into this index type in their particular setup. There are a few ways in which this opt-in can happen:

• Adding the FulltextSearchable extension to a DataObject, as described in our search docs
• Defining 'type' => 'fulltext' in DataObject::$db column definitions
• Implementing DBIndexable on a custom DBField subclass.
• Setting 'ENGINE=MyISAM' in DataObject::$create_table_options

This search index is not required to enable simple text search in the "Pages" section of the CMS, or any ModelAdmin implementations. We generally recommend to choose a more powerful search addon (e.g. based on Solr or ElasticSearch) for website frontend search use cases.

As of 4.6.0, a dev/build will automatically switch MyISAM tables to InnoDB, which automatically recreates any indexes required. If you have large indexes, this can extend the duration if this task. As usual, back up your database before upgrading, and test upgrades on non-production systems first. Our tests indicate that indexes with thousands of records and screen pages worth of content (15MB index size) are converted in a few seconds.

In order to opt out of this change, you can set the engine explicitly for your DataObject implementations:

use SilverStripe\ORM\Connect\MySQLSchemaManager;
use SilverStripe\ORM\DataObject;

class MyDataObject extends DataObject
{
    private static $create_table_options = [
            MySQLSchemaManager::ID => 'ENGINE=MyISAM'
    ];
}

Editing files directly in the insert-media modal

Editors can now directly edit file details when selecting a file in an UploadField or when inserting media in a HTMLEditorField. The "image placement" and "file link" forms that show when inserting an image or a link in an HTMLEditorField have been simplified.

This does mean that the order and structure of fields have changed somewhat. If you have customised the forms in the asset administration area or in the "Insert Media Modal", you should do some regression testing when upgrading to make sure your customisations still work as expected.

If your project uses the popular jonom/focuspoint community module, you should upgrade it as well.