Class FlashComponent
The CakePHP FlashComponent provides a way for you to write a flash variable to the session from your controllers, to be rendered in a view with the FlashHelper.
- Cake\Controller\Component implements Cake\Event\EventListenerInterface uses Cake\Core\InstanceConfigTrait , Cake\Log\LogTrait
-
Cake\Controller\Component\FlashComponent
Properties summary
-
$_defaultConfigprotectedarrayDefault configuration -
$_sessionprotectedThe Session object instance
Inherited Properties
Method Summary
-
__call() public
Magic method for verbose flash methods based on element names. -
__construct() public
Constructor -
getSession() protected
Returns current session object from a controller request. -
set() public
Used to set a session variable that can be used to output messages in the view. If you make consecutive calls to this method, the messages will stack (if they are set with the same flash key)
Method Detail
__call() public ¶
__call( string $name , array $args )
Magic method for verbose flash methods based on element names.
For example: $this->Flash->success('My message') would use the
success.ctp element under src/Template/Element/Flash for rendering the
flash message.
If you make consecutive calls to this method, the messages will stack (if they are set with the same flash key)
Note that the parameter element will be always overridden. In order to call a
specific element from a plugin, you should set the plugin option in $args.
For example: $this->Flash->warning('My message', ['plugin' => 'PluginName']) would
use the warning.ctp element under plugins/PluginName/src/Template/Element/Flash for
rendering the flash message.
Parameters
- string $name
- Element name to use.
- array $args
- Parameters to pass when calling
FlashComponent::set().
Throws
__construct() public ¶
__construct( Cake\Controller\ComponentRegistry $registry , array $config [] )
Constructor
Parameters
-
Cake\Controller\ComponentRegistry$registry - A ComponentRegistry for this component
- array $config optional []
- Array of config.
Overrides
set() public ¶
set( string|Exception $message , array $options [] )
Used to set a session variable that can be used to output messages in the view. If you make consecutive calls to this method, the messages will stack (if they are set with the same flash key)
In your controller: $this->Flash->set('This has been saved');
Options:
keyThe key to set under the session's Flash keyelementThe element used to render the flash message. Default to 'default'.paramsAn array of variables to make available when using an elementclearA bool stating if the current stack should be cleared to start a new oneescapeSet to false to allow templates to print out HTML content
Parameters
- string|Exception $message
Message to be flashed. If an instance of \Exception the exception message will be used and code will be set in params.
- array $options optional []
- An array of options
Methods inherited from Cake\Controller\Component
__debugInfo() public ¶
__debugInfo( )
Returns an array that can be used to describe the internal state of this object.
Returns
__get() public ¶
__get( string $name )
Magic method for lazy loading $components.
Parameters
- string $name
- Name of component to get.
Returns
A Component object or null.
implementedEvents() public ¶
implementedEvents( )
Get the Controller callbacks this Component is interested in.
Uses Conventions to map controller events to standard component callback method names. By defining one of the callback methods a component 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 components to listen to non-standard events.
Returns
Implementation of
initialize() public ¶
initialize( array $config )
Constructor hook method.
Implement this method to avoid having to overwrite the constructor and call parent.
Parameters
- array $config
- The configuration settings provided to this component.
Methods used from Cake\Core\InstanceConfigTrait
_configDelete() protected ¶
_configDelete( string $key )
Deletes a single config key.
Parameters
- string $key
- Key to delete.
Throws
_configRead() protected ¶
_configRead( string|null $key )
Reads a config key.
Parameters
- string|null $key
- Key to read.
Returns
_configWrite() protected ¶
_configWrite( string|array $key , mixed $value , boolean|string $merge false )
Writes a config key.
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
config() public ¶
config( string|array|null $key null , mixed|null $value null , boolean $merge true )
Gets/Sets the config.
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']);
Deprecated
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
Config value being read, or the object itself on write operations.
Throws
configShallow() 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->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']);
Parameters
- string|array $key
- The key to set, or a complete array of configs.
- mixed|null $value optional null
- The value to set.
Returns
$this
getConfig() public ¶
getConfig( string|null $key null , mixed $default null )
Returns the config.
Usage
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');
Parameters
- string|null $key optional null
- The key to get or null for the whole config.
- mixed $default optional null
- The return value when the key does not exist.
Returns
Config value being read.
setConfig() public ¶
setConfig( string|array $key , mixed|null $value null , boolean $merge true )
Sets the config.
Usage
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']);
Parameters
- string|array $key
- The key to 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
$this
Throws
Methods used from Cake\Log\LogTrait
log() public ¶
log( mixed $msg , integer|string $level LogLevel::ERROR , string|array $context [] )
Convenience method to write a message to Log. See Log::write() for more information on writing to logs.
Parameters
- mixed $msg
- Log message.
- integer|string $level optional LogLevel::ERROR
- Error level.
- string|array $context optional []
- Additional log data relevant to this message.
Returns
Success of log write.
Magic methods summary
error() public ¶
error( string $message , array $options )
Set a message using "error" element
Parameters
- string $message
- array $options optional
success() public ¶
success( string $message , array $options )
Set a message using "success" element
Parameters
- string $message
- array $options optional
Properties detail
$_defaultConfig ¶
Default configuration
[
'key' => 'flash',
'element' => 'default',
'params' => [],
'clear' => false,
'duplicate' => true
]
$_session ¶
Cake\Http\Session
The Session object instance
Deprecated
getSession() method.