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.
Property Summary
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$_componentMap protected
arrayA component lookup table used to lazy load component objects.
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$_config protected
arrayRuntime config
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$_configInitialized protected
boolWhether the config property has already been configured with defaults
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$_defaultConfig protected
arrayDefault configuration
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$_registry protected
Cake\Controller\ComponentRegistryComponent registry class used to lazy load components.
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$_session protected
Cake\Network\SessionThe Session object instance
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$components public
arrayOther Components this component uses.
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$request public
Cake\Network\RequestRequest object
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$response public
Cake\Network\ResponseResponse object
Method Summary
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__call() public
Magic method for verbose flash methods based on element names.
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__construct() public
Constructor
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__debugInfo() public
Returns an array that can be used to describe the internal state of this object.
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__get() public
Magic method for lazy loading $components.
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_configDelete() protected
Delete a single config key
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_configRead() protected
Read a config variable
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_configWrite() protected
Write a config variable
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config() public
Usage
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configShallow() public
Merge provided config with existing config. Unlike
config()which does a recursive merge for nested keys, this method does a simple merge. -
error() public @method
Set a message using "error" element
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implementedEvents() public
Get the Controller callbacks this Component is interested in.
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initialize() public
Constructor hook method.
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log() public
Convenience method to write a message to Log. See Log::write() for more information on writing to logs.
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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)
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success() public @method
Set a message using "success" element
Method Detail
__call() ¶ public
__call(string $name, array $args): voidMagic 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: $this->Flash->warning('My message', ['plugin' => 'PluginName']) would
use the warning.ctp element under plugins/PluginName/src/Template/Element/Flash for
rendering the flash message.
Parameters
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string$name Element name to use.
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array$args Parameters to pass when calling
FlashComponent::set().
Returns
voidThrows
Cake\Network\Exception\InternalErrorExceptionIf missing the flash message.
__construct() ¶ public
__construct(Cake\Controller\ComponentRegistry $registry, array $config = [])Constructor
Parameters
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Cake\Controller\ComponentRegistry$registry A ComponentRegistry for this component
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array$config optional Array of config.
__debugInfo() ¶ public
__debugInfo(): arrayReturns an array that can be used to describe the internal state of this object.
Returns
array__get() ¶ public
__get(string $name): mixedMagic method for lazy loading $components.
Parameters
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string$name Name of component to get.
Returns
mixed_configDelete() ¶ protected
_configDelete(string $key): voidDelete a single config key
Parameters
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string$key Key to delete.
Returns
voidThrows
Cake\Core\Exception\Exceptionif attempting to clobber existing config
_configRead() ¶ protected
_configRead(string|null $key): mixedRead a config variable
Parameters
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string|null$key Key to read.
Returns
mixed_configWrite() ¶ protected
_configWrite(string|array $key, mixed $value, bool|string $merge = false): voidWrite a config variable
Parameters
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string|array$key Key to write to.
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mixed$value Value to write.
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bool|string$merge optional True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false.
Returns
voidThrows
Cake\Core\Exception\Exceptionif attempting to clobber existing config
config() ¶ public
config(string|array|null $key = null, mixed|null $value = null, bool $merge = true): mixedUsage
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:
$this->config(['one' => 'value', 'another' => 'value']);Parameters
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string|array|null$key optional The key to get/set, or a complete array of configs.
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mixed|null$value optional The value to set.
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bool$merge optional Whether to recursively merge or overwrite existing config, defaults to true.
Returns
mixedThrows
Cake\Core\Exception\ExceptionWhen trying to set a key that is invalid.
configShallow() ¶ public
configShallow(string|array $key, mixed|null $value = null): $thisMerge 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:
$this->config(['one' => 'value', 'another' => 'value']);Parameters
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string|array$key The key to set, or a complete array of configs.
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mixed|null$value optional The value to set.
Returns
$thiserror() ¶ public @method
error(string $message, array $options = []): voidSet a message using "error" element
Parameters
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string$message -
array$options optional
Returns
voidimplementedEvents() ¶ public
implementedEvents(): arrayGet 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
arrayinitialize() ¶ public
initialize(array $config): voidConstructor hook method.
Implement this method to avoid having to overwrite the constructor and call parent.
Parameters
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array$config The configuration settings provided to this component.
Returns
voidlog() ¶ public
log(mixed $msg, int|string $level = LogLevel::ERROR, string|array $context = []): boolConvenience method to write a message to Log. See Log::write() for more information on writing to logs.
Parameters
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mixed$msg Log message.
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int|string$level optional Error level.
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string|array$context optional Additional log data relevant to this message.
Returns
boolset() ¶ public
set(stringException $message, array $options = []): voidUsed 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: $this->Flash->set('This has been saved');
Options:
keyThe key to set under the session's Flash keyelementThe element used to render the flash message. Default to 'default'.paramsAn array of variables to make available when using an elementclearA bool stating if the current stack should be cleared to start a new one
Parameters
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stringException$message Message to be flashed. If an instance of \Exception the exception message will be used and code will be set in params.
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array$options optional An array of options
Returns
voidsuccess() ¶ public @method
success(string $message, array $options = []): voidSet a message using "success" element
Parameters
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string$message -
array$options optional
Returns
voidProperty Detail
$_configInitialized ¶ protected
Whether the config property has already been configured with defaults
Type
bool$_defaultConfig ¶ protected
Default configuration
These are merged with user-provided config when the component is used.
Type
array$_registry ¶ protected
Component registry class used to lazy load components.
Type
Cake\Controller\ComponentRegistry