Updating to the RC

You can use composer to upgrade to the beta version of CakePHP 4.0.0:

php composer.phar require --update-with-dependencies "cakephp/cakephp:4.0.0-RC2"

We would greatly appreciate it if you temporarily upgraded your application, and ran your tests. By opening issues for any regressions in the release candidate, we can help ensure a smoother release of 4.0.0 before the stable release.

What’s new in 4.0.0?

The migration guide has a complete list of what’s new in 4.0.0, and what has been deprecated. We recommend you give that page a read when upgrading.

Changes since 4.0.0-RC1

• Validation::compareFields() now works with null values.
• Email attachments now URL encode filenames with non-ascii characters.
• Added assertRedirectEquals() to allow assertions without the base path being added.
• Removed Http\Server::setRunner(), as the runner can be provided as a constructor argument now.
• Improved error messages from QueryExpressions when null is used with an incompatible operator.
• Added deprecation warnings for Validator::allowEmpty() and Validator::notEmpty().
• The safe option was removed from HtmlHelper::script() and scriptBlock(). This option is not needed in an HTML5 context.
• HtmlHelper::docType() is now deprecated.
• The console package was more thoroughly tested in isolation and several problems were fixed.
• FormProtectionComponent now works with applications in sub-directories.
• Validator::errors() was deprecated and is replaced by validate().

Contributors to 4.0.0-RC2

Thank you to all the contributors that helped make this release happen:

• ADmad
• Chetan Varshney
• Corey Taylor
• Edgaras Janušauskas
• Mark Scherer
• Mark Story
• Martin Matthaei
• gregs
• othercorey
• saeideng

As always, we would like to thank all the contributors that opened issues, created pull requests or updated the documentation.