6.0 Migration Guide

CakePHP 6.0 contains breaking changes, and is not backwards compatible with 5.x. Before attempting to upgrade to 6.0 first upgrade to 5.3+ and resolve all deprecation warnings.

Behavior Changes

• All datasource connections require the username, password and database keys as default values have been removed to prevent accidental privileged user usage.
• The ORM.mapJsonTypeForSqlite configuration option has been removed. The SQLite adapter will map all columns with json in their names to the JsonType by default.
• Cake\View\Widget\FileWidget was removed as it was redundant. The standard input widget will be used for file inputs in 6.x.
• Text::uuid() now generates UUID v7 complaint strings instead of UUID v4.
• Cake\Event\Event::getSubject() can now return null if the event has no subject instead of throwing an exception.

Breaking Changes

Renamed Methods

Methods starting with a _ have been renamed to remove the leading underscore. You can find a full list of adjusted methods in the cakephp/upgrade tool.

Some methods have also been renamed to better reflect their purpose. These are:

Class	Old Method(s)	New Method(s)
Cake\Collection\ExtractTrait	_extract()	extractColumn()
Cake\Console\ConsoleOutput	_write()	writeStream()
Cake\Form\Form	_execute()	process()
Cake\Http\Client	_sendRequest()	processRequest()
Cake\Http\ServerRequest	_is()	isType()
Cake\Http\Client\Adapter\Stream	_send()	processRequest()
Cake\Http\Cookie\Cookie	resolveSameSiteEnum()	resolveSameSite()
Cake\I18n\DateFormatTrait	_parseDateTime()	processDateTime()
Cake\Mailer\Transport\SmtpTransport	_connect() _disconnect()	connectSmtp() disconnectSmtp()
Cake\ORM\Table	_saveMany() _deleteMany()	doSaveMany() doDeleteMany()
Cake\ORM\Behavior\TreeBehavior	_moveUp() _moveDown() _removeFromTree()	doMoveUp() doMoveDown() doRemoveFromTree()
Cake\ORM\Association\HasMany	_unlink()	doUnlink()
Cake\ORM\Query\SelectQuery	_decorateResults() _execute()	ormDecorateResults() ormExecute()
Cake\Utility\Hash	_filter() _merge()	doFilter() doMerge()
Cake\Utility\Text	_wordWrap()	doWordWrap()
Cake\Utility\Xml	_fromArray() _toArray()	doFromArray() doToArray()
Cake\View\View	_render()	renderFile()
Cake\View\Helper\PaginatorHelper	_numbers()	buildNumbers()

Renamed Properties

Properties starting with a _ have been renamed to remove the leading underscore. You can find a full list of adjusted properties in the cakephp/upgrade tool.

Some properties have also been renamed to better reflect their purpose. These are:

• Cake\ORM\Entity
  • $_accessible has been renamed to patchable
• Cake\View\View
  • $_helpers has been renamed to helperRegistry as $helpers already exists to hold the configuration

Renamed Classes

• Cake\Database\DriverFeatureEnum has moved to Cake\Database\Enum\DriverFeature.
• Cake\Http\Cookie\SameSiteEnum has moved to Cake\Http\Cookie\Enum\SameSite.
• The Cake\Command\Helper namespace has been removed. Use the Cake\Console\Helper namespace for BannerHelper, ProgressHelper, TableHelper, and TreeHelper.

Method Signatures

• All fluent methods now declare a static return type. Update return types in overridden methods and interface implementations accordingly. This affects methods on classes and interfaces such as Controller, Table, EntityInterface, EventInterface, Mailer, and ViewBuilder. The upgrade tool contains the full list.
• The following methods now return void: ServerRequest::allowMethod(), Configure::load(), ResponseEmitter::emit(), Session::close(), Table::deleteOrFail(), FixtureInterface::insert() and truncate(), and ConsoleInputArgument::validateChoice() and ConsoleInputOption::validateChoice(). Remove assignments and conditions that depend on their former return values. Handle exceptions where applicable.
• The callback parameters of CsrfProtectionMiddleware::skipCheckCallback(), SessionCsrfProtectionMiddleware::skipCheckCallback(), View::cache(), TestCase::withErrorReporting(), Table::executeTransaction(), and AttributeCollection::filter() now require a Closure instead of a general callable. ResultSetFactory::getDtoHydrator() now returns a Closure.

Console

• The validChoice method on ConsoleInputArgument and ConsoleInputOption has been renamed to validateChoice.

Command

• Command args and io are now available as properties instead of them being passed down to the execute method. See the current state of Commands for examples.

Event

• The signature of EventManagerInterface::on() has changed. The 2nd and 3rd parameters have been swapped. Calls which pass an options array as the 2nd argument will need to be updated to pass it as the 3rd argument instead or use named parameters.

Datasource

• Datasource/Paging/PaginatedInterface now extends IteratorAggregate instead of Traversable.
• EntityTrait::isEmpty() has been dropped in favor of hasValue().

Database

• Binary columns now use binary for fixed-length data and varbinary for variable-length data. In migration addColumn() calls, remove 'fixed' => true from fixed-length binary columns, and change variable-length binary columns to varbinary. The fixed option is no longer used; TableSchemaInterface::TYPE_VARBINARY is available for the new type.

Http

• Using $request->getParam('?') to get the query params is no longer possible. Use $request->getQueryParams() instead.
• The methods _getCookies(), _getJson(), _getXml(), _getHeaders() and _getBody() have been removed. Use/Overwrite their non-prefixed public alternative instead.

ORM

• The _accessible property inside Entities has been renamed to patchable to better reflect its purpose.
• setAccess method has been renamed to setPatchable.
• getAccessible method has been renamed to getPatchable.
• isAccessible method has been renamed to isPatchable.
• The accessibleFields option used in e.g. ORM Queries has been renamed to patchableFields.
• TranslateTrait::translation() now only retrieves an existing translation and returns null when none exists. Use getOrCreateTranslation() if the previous create-on-access behavior is needed.

Router

• RouteBuilder has adjusted the signature of scope(), prefix() and resources() so the 2nd and 3rd parameters have been swapped. We recommend using named parameters to prevent confusion and make the code more readable.

Utility

• The default placeholder format for Text::insert() has been changed. They now use {foo} instead of :foo. You can get the old behavior by using the before and after keys of $options.

View

• 'escape'/'escapeTitle' keys have now been separated cleanly into escape for escaping content/labels, and 'escapeAttributes' for HTML attributes respectively. They also don't overlap anymore, so if you need to prevent escaping on content and attributes, make sure to set them both to false.
• title has been renamed to content in scopes where this is not an attribute, but content or label element, specifically: 'item'/itemWithoutLink breadcrumb templates.
• multicheckboxTitle template of FormHelper is now multicheckboxLabel.

New Features

Event

• Event subscriptions can now be declared on listener classes and methods with the repeatable Cake\Event\Attribute\EventListener attribute. Register them through EventManager::registerAttributeListeners() or AttributeEventListenerConnector, with support for constructor dependency injection and named event managers. See Registering Listeners with Attributes for configuration and examples.

ORM

• Entities can now map fields to real class properties, including typed properties and PHP 8.4 asymmetric visibility/property hooks. When changing declared fields inside entity methods, continue to use set()/patch() if you need dirty tracking and related entity bookkeeping.

Router

• Attribute routing is now available via RouteBuilder::connectAttributes() and the new Cake\Routing\Attribute namespace. Routes can be defined directly on controller classes and actions using PHP attributes such as #[Get], #[Post], #[Scope], #[Resource], and more. See Attribute Routing for full documentation.