Class TimestampBehavior

Base class for behaviors.

Behaviors allow you to simulate mixins, and create reusable blocks of application logic, that can be reused across several models. Behaviors also provide a way to hook into model callbacks and augment their behavior.

Mixin methods

Behaviors can provide mixin like features by declaring public methods. These methods will be accessible on the tables the behavior has been added to.

function doSomething($arg1, $arg2) {
  // do something
}

Would be called like $table->doSomething($arg1, $arg2);.

Callback methods

Behaviors can listen to any events fired on a Table. By default CakePHP provides a number of lifecycle events your behaviors can listen to:

beforeFind(Event $event, Query $query, ArrayObject $options, boolean $primary) Fired before each find operation. By stopping the event and supplying a return value you can bypass the find operation entirely. Any changes done to the $query instance will be retained for the rest of the find. The $primary parameter indicates whether or not this is the root query, or an associated query.
buildValidator(Event $event, Validator $validator, string $name) Fired when the validator object identified by $name is being built. You can use this callback to add validation rules or add validation providers.
buildRules(Event $event, RulesChecker $rules) Fired when the rules checking object for the table is being built. You can use this callback to add more rules to the set.
beforeRules(Event $event, EntityInterface $entity, ArrayObject $options, $operation) Fired before an entity is validated using by a rules checker. By stopping this event, you can return the final value of the rules checking operation.
afterRules(Event $event, EntityInterface $entity, ArrayObject $options, bool $result, $operation) Fired after the rules have been checked on the entity. By stopping this event, you can return the final value of the rules checking operation.
beforeSave(Event $event, EntityInterface $entity, ArrayObject $options) Fired before each entity is saved. Stopping this event will abort the save operation. When the event is stopped the result of the event will be returned.
afterSave(Event $event, EntityInterface $entity, ArrayObject $options) Fired after an entity is saved.
beforeDelete(Event $event, EntityInterface $entity, ArrayObject $options) Fired before an entity is deleted. By stopping this event you will abort the delete operation.
afterDelete(Event $event, EntityInterface $entity, ArrayObject $options) Fired after an entity has been deleted.

In addition to the core events, behaviors can respond to any event fired from your Table classes including custom application specific ones.

You can set the priority of a behaviors callbacks by using the priority setting when attaching a behavior. This will set the priority for all the callbacks a behavior provides.

Finder methods

Behaviors can provide finder methods that hook into a Table's find() method. Custom finders are a great way to provide preset queries that relate to your behavior. For example a SluggableBehavior could provide a find('slugged') finder. Behavior finders are implemented the same as other finders. Any method starting with find will be setup as a finder. Your finder methods should expect the following arguments:

findSlugged(Query $query, array $options)

Cake\ORM\Behavior implements Cake\Event\EventListenerInterface uses Cake\Core\InstanceConfigTrait

Cake\ORM\Behavior\TimestampBehavior

Namespace: Cake\ORM\Behavior
See: Cake\ORM\Table::addBehavior()
See: Cake\Event\EventManager
Located at ORM/Behavior/TimestampBehavior.php

Method Detail

_updateFieldsource protected

_updateField( Cake\Datasource\EntityInterface $entity , string $field , boolean $refreshTimestamp )

Update a field, if it hasn't been updated already

Parameters

Cake\Datasource\EntityInterface $entity: Entity instance.
string $field: Field name
boolean $refreshTimestamp: Whether to refresh timestamp.

handleEventsource public

handleEvent( Cake\Event\Event $event , Cake\Datasource\EntityInterface $entity )

There is only one event handler, it can be configured to be called for any event

Parameters

Cake\Event\Event $event: Event instance.
Cake\Datasource\EntityInterface $entity: Entity instance.

Returns

true
(irrespective of the behavior logic, the save will not be prevented)

Throws

UnexpectedValueException
if a field's when value is misdefined
UnexpectedValueException
When the value for an event is not 'always', 'new' or 'existing'

implementedEventssource public

implementedEvents( )

implementedEvents

The implemented events of this behavior depend on configuration

Returns

array
array

Overrides

Cake\ORM\Behavior::implementedEvents()

initializesource public

initialize( array $config )

Initialize hook

If events are specified - do not merge them with existing events, overwrite the events to listen on

Parameters

array $config: The config for this behavior.

Overrides

Cake\ORM\Behavior::initialize()

timestampsource public

timestamp( DateTime $ts null , boolean $refreshTimestamp false )

Get or set the timestamp to be used

Set the timestamp to the given DateTime object, or if not passed a new DateTime object If an explicit date time is passed, the config option refreshTimestamp is automatically set to false.

Parameters

DateTime $ts optional null: Timestamp
boolean $refreshTimestamp optional false: If true timestamp is refreshed.

Returns

Cake\I18n\Time
\Cake\I18n\Time

touchsource public

touch( Cake\Datasource\EntityInterface $entity , string $eventName 'Model.beforeSave' )

Touch an entity

Bumps timestamp fields for an entity. For any fields configured to be updated "always" or "existing", update the timestamp value. This method will overwrite any pre-existing value.

Parameters

Cake\Datasource\EntityInterface $entity: Entity instance.
string $eventName optional 'Model.beforeSave': Event name.

Returns

boolean
true if a field is updated, false if no action performed

Methods inherited from Cake\ORM\Behavior

__constructsource public

__construct( Cake\ORM\Table $table , array $config [] )

Constructor

Merges config with the default and store in the config property

Parameters

Cake\ORM\Table $table: The table this behavior is attached to.
array $config optional []: The config for this behavior.

_reflectionCachesource protected

_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

Returns

array
array

_resolveMethodAliasessource protected

_resolveMethodAliases( string $key , array $defaults , array $config )

Removes aliased methods that would otherwise be duplicated by userland configuration.

Parameters

string $key: The key to filter.
array $defaults: The default method mappings.
array $config: The customized method mappings.

Returns

array
A de-duped list of config data.

implementedFinderssource public

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

Returns

array
array

implementedMethodssource public

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()

Returns

array
array

verifyConfigsource public

verifyConfig( )

verifyConfig

Checks that implemented keys contain values pointing at callable.

Throws

Cake\Core\Exception\Exception
if config are invalid

Methods used from Cake\Core\InstanceConfigTrait

_configDeletesource protected

_configDelete( string $key )

Delete a single config key

Parameters

string $key: Key to delete.

Throws

Cake\Core\Exception\Exception
if attempting to clobber existing config

_configReadsource protected

_configRead( string|null $key )

Read a config variable

Parameters

string|null $key: Key to read.

Returns

mixed
mixed

_configWritesource protected

_configWrite( string|array $key , mixed $value , boolean|string $merge false )

Write a config variable

Parameters

string|array $key: Key to write to.
mixed $value: Value to write.
boolean|string $merge optional false: True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false.

Throws

Cake\Core\Exception\Exception
if attempting to clobber existing config

configsource public

config( string|array|null $key null , mixed|null $value null , boolean $merge true )

Usage

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']);

Parameters

string|array|null $key optional null: The key to get/set, or a complete array of configs.
mixed|null $value optional null: The value to set.
boolean $merge optional true: Whether to recursively merge or overwrite existing config, defaults to true.

Returns

mixed
Config value being read, or the object itself on write operations.

Throws

Cake\Core\Exception\Exception
When trying to set a key that is invalid.

configShallowsource public

configShallow( 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->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']);

Parameters

string|array $key: The key to set, or a complete array of configs.
mixed|null $value optional null: The value to set.

Returns

mixed
$this The object itself.

Properties summary

$_defaultConfigsource

protected array

Default config

These are merged with user-provided config when the behavior is used.

events - an event-name keyed array of which fields to update, and when, for a given event possible values for when a field will be updated are "always", "new" or "existing", to set the field value always, only when a new record or only when an existing record.

refreshTimestamp - if true (the default) the timestamp used will be the current time when the code is executed, to set to an explicit date time value - set refreshTimetamp to false and call setTimestamp() on the behavior class before use.

[
    'implementedFinders' => [],
    'implementedMethods' => [
        'timestamp' => 'timestamp',
        'touch' => 'touch'
    ],
    'events' => [
        'Model.beforeSave' => [
            'created' => 'new',
            'modified' => 'always'
        ]
    ],
    'refreshTimestamp' => true
]

$_tssource

protected DateTime

Current timestamp

Properties inherited from Cake\ORM\Behavior

$_reflectionCachesource

protected static array

Reflection method cache for behaviors.

Stores the reflected method + finder methods per class. This prevents reflecting the same class multiple times in a single process.

[]

$_tablesource

protected Cake\ORM\Table

Table instance.

Properties used from Cake\Core\InstanceConfigTrait

$_configsource

protected array

Runtime config

[]

$_configInitializedsource

protected boolean

Whether the config property has already been configured with defaults

false

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http://api.cakephp.org/3.1/class-Cake.ORM.Behavior.TimestampBehavior.html