FlashHelper class to render flash messages.
After setting messages in your controllers with FlashComponent, you can use this class to output your flash messages in your views.
Cake\View\View
The View instance this helper is attached to
array<string, mixed>
Runtime config
bool
Whether the config property has already been configured with defaults
array<string, mixed>
Default config for this helper.
array<string, array>
A helper lookup table used to lazy load helper objects.
array
List of helpers used by this helper
Provide non fatal errors on missing method calls.
Default Constructor
Returns an array that can be used to describe the internal state of this object.
Lazy loads helpers.
Deletes a single config key.
Reads a config key.
Writes a config key.
Returns a string to be used as onclick handler for confirm dialogs.
Adds the given class to the element options
Merge provided config with existing config. Unlike config()
which does a recursive merge for nested keys, this method does a simple merge.
Returns the config.
Returns the config for this specific key.
Get the view instance this helper is bound to.
Event listeners.
Constructor hook method.
Used to render the message set in FlashComponent::set()
Sets the config.
__call(string $method, array $params): mixed|void
Provide non fatal errors on missing method calls.
string
$method Method to invoke
array
$params Array of params for the method.
mixed|void
__construct(Cake\View\View $view, array<string, mixed> $config = [])
Default Constructor
Cake\View\View
$view The View this helper is being attached to.
array<string, mixed>
$config optional Configuration settings for the helper.
__debugInfo(): array<string, mixed>
Returns an array that can be used to describe the internal state of this object.
array<string, mixed>
__get(string $name): Cake\View\Helper|null|void
Lazy loads helpers.
string
$name Name of the property being accessed.
Cake\View\Helper|null|void
_configDelete(string $key): void
Deletes a single config key.
string
$key Key to delete.
void
Cake\Core\Exception\CakeException
_configRead(string|null $key): mixed
Reads a config key.
string|null
$key Key to read.
mixed
_configWrite(array<string, mixed>|string $key, mixed $value, string|bool $merge = false): void
Writes a config key.
array<string, mixed>|string
$key Key to write to.
mixed
$value Value to write.
string|bool
$merge optional True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false.
void
Cake\Core\Exception\CakeException
_confirm(string $okCode, string $cancelCode): string
Returns a string to be used as onclick handler for confirm dialogs.
string
$okCode Code to be executed after user chose 'OK'
string
$cancelCode Code to be executed after user chose 'Cancel'
string
addClass(array<string, mixed> $options, string $class, string $key = 'class'): array<string, mixed>
Adds the given class to the element options
array<string, mixed>
$options Array options/attributes to add a class to
string
$class The class name being added.
string
$key optional the key to use for class. Defaults to 'class'
.
array<string, mixed>
configShallow(array<string, mixed>|string $key, mixed|null $value = null): $this
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']);
array<string, mixed>|string
$key The key to set, or a complete array of configs.
mixed|null
$value optional The value to set.
$this
getConfig(string|null $key = null, mixed $default = null): mixed
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');
string|null
$key optional The key to get or null for the whole config.
mixed
$default optional The return value when the key does not exist.
mixed
getConfigOrFail(string $key): mixed
Returns the config for this specific key.
The config value for this key must exist, it can never be null.
string
$key The key to get.
mixed
InvalidArgumentException
getView(): Cake\View\View
Get the view instance this helper is bound to.
Cake\View\View
implementedEvents(): array<string, mixed>
Event listeners.
By defining one of the callback methods a helper 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 helpers to listen to non-standard events.
array<string, mixed>
initialize(array<string, mixed> $config): void
Constructor hook method.
Implement this method to avoid having to overwrite the constructor and call parent.
array<string, mixed>
$config The configuration settings provided to this helper.
void
render(string $key = 'flash', array<string, mixed> $options = []): string|null
Used to render the message set in FlashComponent::set()
In your template file: $this->Flash->render('somekey'); Will default to flash if no param is passed
You can pass additional information into the flash message generation. This allows you to consolidate all the parameters for a given type of flash message into the view.
echo $this->Flash->render('flash', ['params' => ['name' => $user['User']['name']]]);
This would pass the current user's name into the flash message, so you could create personalized messages without the controller needing access to that data.
Lastly you can choose the element that is used for rendering the flash message. Using custom elements allows you to fully customize how flash messages are generated.
echo $this->Flash->render('flash', ['element' => 'my_custom_element']);
If you want to use an element from a plugin for rendering your flash message you can use the dot notation for the plugin's element name:
echo $this->Flash->render('flash', [ 'element' => 'MyPlugin.my_custom_element', ]);
If you have several messages stored in the Session, each message will be rendered in its own element.
string
$key optional The [Flash.]key you are rendering in the view.
array<string, mixed>
$options optional Additional options to use for the creation of this flash message. Supports the 'params', and 'element' keys that are used in the helper.
string|null
setConfig(array<string, mixed>|string $key, mixed|null $value = null, bool $merge = true): $this
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']);
array<string, mixed>|string
$key The key to set, or a complete array of configs.
mixed|null
$value optional The value to set.
bool
$merge optional Whether to recursively merge or overwrite existing config, defaults to true.
$this
Cake\Core\Exception\CakeException
The View instance this helper is attached to
Cake\View\View
Runtime config
array<string, mixed>
Whether the config property has already been configured with defaults
bool
Default config for this helper.
array<string, mixed>
A helper lookup table used to lazy load helper objects.
array<string, array>
List of helpers used by this helper
array
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https://api.cakephp.org/4.4/class-Cake.View.Helper.FlashHelper.html