CounterCache behavior
Enables models to cache the amount of connections in a given relation.
Examples with Post model belonging to User model
Regular counter cache
[
'Users' => [
'post_count'
]
] Counter cache with scope
[
'Users' => [
'posts_published' => [
'conditions' => [
'published' => true
]
]
]
] Counter cache using custom find
[
'Users' => [
'posts_published' => [
'finder' => 'published' // Will be using findPublished()
]
]
] Counter cache using lambda function returning the count This is equivalent to example #2
[
'Users' => [
'posts_published' => function (Event $event, EntityInterface $entity, Table $table) {
$query = $table->find('all')->where([
'published' => true,
'user_id' => $entity->get('user_id')
]);
return $query->count();
}
]
] When using a lambda function you can return false to disable updating the counter value for the current operation.
Ignore updating the field if it is dirty
[
'Users' => [
'posts_published' => [
'ignoreDirty' => true
]
]
] You can disable counter updates entirely by sending the ignoreCounterCache option to your save operation:
$this->Articles->save($article, ['ignoreCounterCache' => true]);
$_ignoreDirty protected array_getCount( array $config , array $conditions )
Fetches and returns the count for a single field in an association
$config $conditions _processAssociation( Cake\Event\Event $event , Cake\Datasource\EntityInterface $entity , Cake\ORM\Association $assoc , array $settings )
Updates counter cache for a single association
Cake\Event\Event $event Cake\Datasource\EntityInterface $entity Cake\ORM\Association $assoc $settings _processAssociations( Cake\Event\Event $event , Cake\Datasource\EntityInterface $entity )
Iterate all associations and update counter caches.
Cake\Event\Event $event Cake\Datasource\EntityInterface $entity afterDelete( Cake\Event\Event $event , Cake\Datasource\EntityInterface $entity , ArrayObject $options )
afterDelete callback.
Makes sure to update counter cache when a record is deleted.
Cake\Event\Event $event Cake\Datasource\EntityInterface $entity $options afterSave( Cake\Event\Event $event , Cake\Datasource\EntityInterface $entity , ArrayObject $options )
afterSave callback.
Makes sure to update counter cache when a new record is created or updated.
Cake\Event\Event $event Cake\Datasource\EntityInterface $entity $options beforeSave( Cake\Event\Event $event , Cake\Datasource\EntityInterface $entity , ArrayObject $options )
beforeSave callback.
Check if a field, which should be ignored, is dirty
Cake\Event\Event $event Cake\Datasource\EntityInterface $entity $options __construct( Cake\ORM\Table $table , array $config = [] )
Constructor
Merges config with the default and store in the config property
Cake\ORM\Table $table $config optional [] _reflectionCache( )
Gets the methods implemented by this behavior
Uses the implementedEvents() method to exclude callback methods. Methods starting with _ will be ignored, as will methods declared on Cake\ORM\Behavior
_resolveMethodAliases( string $key , array $defaults , array $config )
Removes aliased methods that would otherwise be duplicated by userland configuration.
$key $defaults $config getTable( )
Get the table instance this behavior is bound to.
Cake\ORM\TableimplementedEvents( )
Gets the Model callbacks this behavior is interested in.
By defining one of the callback methods a behavior is assumed to be interested in the related event.
Override this method if you need to add non-conventional event listeners. Or if you want your behavior to listen to non-standard events.
Cake\Event\EventListenerInterface::implementedEvents() implementedFinders( )
implementedFinders
Provides an alias->methodname map of which finders a behavior implements. Example:
[ 'this' => 'findThis', 'alias' => 'findMethodName' ]
With the above example, a call to $Table->find('this') will call $Behavior->findThis() and a call to $Table->find('alias') will call $Behavior->findMethodName()
It is recommended, though not required, to define implementedFinders in the config property of child classes such that it is not necessary to use reflections to derive the available method list. See core behaviors for examples
implementedMethods( )
implementedMethods
Provides an alias->methodname map of which methods a behavior implements. Example:
[ 'method' => 'method', 'aliasedmethod' => 'somethingElse' ]
With the above example, a call to $Table->method() will call $Behavior->method() and a call to $Table->aliasedmethod() will call $Behavior->somethingElse()
It is recommended, though not required, to define implementedFinders in the config property of child classes such that it is not necessary to use reflections to derive the available method list. See core behaviors for examples
initialize( array $config )
Constructor hook method.
Implement this method to avoid having to overwrite the constructor and call parent.
$config verifyConfig( )
verifyConfig
Checks that implemented keys contain values pointing at callable.
Cake\Core\Exception\Exception_configDelete( string $key )
Deletes a single config key.
$key Cake\Core\Exception\Exception_configRead( string|null $key )
Reads a config key.
$key _configWrite( string|array $key , mixed $value , boolean|string $merge = false )
Writes a config key.
$key $value $merge optional false True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false.
Cake\Core\Exception\Exceptionconfig( string|array|null $key = null , mixed|null $value = null , boolean $merge = true )
Gets/Sets the config.
Reading the whole config:
$this->config();
Reading a specific value:
$this->config('key'); Reading a nested value:
$this->config('some.nested.key'); Setting a specific value:
$this->config('key', $value); Setting a nested value:
$this->config('some.nested.key', $value); Updating multiple config settings at the same time:
$this->config(['one' => 'value', 'another' => 'value']);
$key optional null $value optional null $merge optional true Cake\Core\Exception\ExceptionconfigShallow( string|array $key , mixed|null $value = null )
Merge provided config with existing config. Unlike config() which does a recursive merge for nested keys, this method does a simple merge.
Setting a specific value:
$this->configShallow('key', $value); Setting a nested value:
$this->configShallow('some.nested.key', $value); Updating multiple config settings at the same time:
$this->configShallow(['one' => 'value', 'another' => 'value']);
$key $value optional null getConfig( string|null $key = null , mixed $default = null )
Returns the config.
Reading the whole config:
$this->getConfig();
Reading a specific value:
$this->getConfig('key'); Reading a nested value:
$this->getConfig('some.nested.key'); Reading with default value:
$this->getConfig('some-key', 'default-value'); $key optional null $default optional null setConfig( string|array $key , mixed|null $value = null , boolean $merge = true )
Sets the config.
Setting a specific value:
$this->setConfig('key', $value); Setting a nested value:
$this->setConfig('some.nested.key', $value); Updating multiple config settings at the same time:
$this->setConfig(['one' => 'value', 'another' => 'value']);
$key $value optional null $merge optional true Cake\Core\Exception\Exception
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https://api.cakephp.org/3.8/class-Cake.ORM.Behavior.CounterCacheBehavior.html