5.3 KiB
4.9.0 (Unreleased)
Overview
Features and enhancements
Image lazy loading
Most modern browsers support the ability to "lazy load" images. When an image is configured to be lazy loaded, browsers only request the image once it's about to be visible to the users. This reduces the initial rendering time for pages.
From v4.9, Silverstripe CMS lazy loads most images by default. You have the options to opt-out of this behaviour globally or on specific image instances.
This feature was implemented in partnership with Google.
Read Browser-level image lazy-loading for the web on web.dev more information.
How developers can interact with image lazy loading
Most images get the loading="lazy" attribute added to them. This includes:
- images added via the HTML Editor's insert media button
- image DataObjects added to templates.
To disable lazy loading for an individual image in a template, use $MyImage.LazyLoad(false).
Image HTML tags (<img>) added in templates are not lazy loaded by default. Developers
can manually lazy load these images by adding a loading="lazy" attribute.
Read the Image Lazy Loading Silverstripe CMS developer documentation for more details and code examples.
Opting out of image lazy loading globally
There's some scenarios where you might not want to use the native Silverstripe CMS lazy loading. For example, you might already have a custom lazy loading implementation.
To opt out of lazy loading globally, use the following yml config:
SilverStripe\Assets\Image:
lazy_loading_enabled: false
How content authors can interact with image lazy loading
Content authors can disable lazy loading on images added via the HTML editor field in the Insert media dialog by setting the Loading field to Eager.
Consult the Insert images article in the Silverstripe CMS user help for detailed instructions.
Manage your CMS sessions across devices
The session manager module is a new security focused feature which allows a CMS user to view and manage their active sessions in the CMS within the "My profile" section of the CMS (/admin/myprofile). They can see the device details behind each session and have the ability to revoke these sessions. This new module has been added to silverstripe/recipe-cms which is the recommended method of managing Silverstripe CMS dependencies in a project.
Projects that have silverstripe/recipe-cms as a requirement in their composer.json will automatically get silverstripe/session-manager when you run composer update. If your project does not use silverstripe/recipe-cms, it's recommended that you require silverstripe/session-manager in your composer file as a security enhancement. The session manager module requires no configuration and works out-of-the-box.
If your site has the symbiote/silverstripe-queuedjobs module installed, then a job will automatically be created that will periodically remove old database records created by the session manager module.
CMS users can review the Session Manager user help for more information on managing their sessions.
Default mail transport upgraded to sendmail
Silverstripe CMS provides an API over the top of the SwiftMailer PHP library which comes with an extensive list of "transports" for sending mail via different services.
Prior to 4.9.0, Silverstripe CMS 4 defaulted to using the built-in PHP mail() command via a deprecated class Swift_MailTransport. However, using this layer is less secure and is strongly discouraged.
Installations of Silverstripe CMS setup using silverstripe/installer 4.9.0 or greater default to using the more secure class Swift_SendmailTransport which uses a sendmail binary.
It's highly recommended that existing Silverstripe CMS installation still using Swift_MailTransport upgrade to using Swift_SendmailTransport or another available transport, such as Swift_SmtpTransport. Details on how to use these classes are available in the email section of the developer docs.
Other new features
- Dot notation support in form fields: Save directly into nested has_one relationships (see docs).
Bugfixes
This release includes a number of bug fixes to improve a broad range of areas. Check the change logs for full details of these fixes split by module. Thank you to the community members that helped contribute these fixes as part of the release!