Add a hook to be executed before the hooked method
- Use a "before" hook when you have code that should execute before a hookable method executes.
- One benefit of using a "before" hook is that you can have it modify the arguments that are sent to the hookable method.
- This type of hook can also completely replace a hookable method if hook populates an
$event->replaceproperty. See the HookEvent class for details.
Example
// Attach hook to a method in current object
$this->addHookBefore('Page::path', $this, 'yourHookMethodName');
// Attach hook to an inline function
$this->addHookBefore('Page::path', function($event) { ... });
// Attach hook to a procedural function
$this->addHookBefore('Page::path', 'your_function_name');
// Attach hook from single object instance ($page) to inline function
$page->addHookBefore('path', function($event) { ... }); Usage
// basic usage
$string = $wire->addHookBefore($method, $toObject);
// usage with all arguments
$string = $wire->addHookBefore($method, $toObject, $toMethod = null, array $options = []);Arguments
| Name | Type(s) | Description |
|---|---|---|
method | string, array | Method to hook in one of the following formats (please omit 3 leading underscores):
|
toObject | object, null, callable | Specify one of the following:
|
toMethod (optional) | string, array | Method from $toObject, or function name to call on a hook event. This argument can be sustituted as the 2nd argument when the 2nd argument isn’t needed, or it can be the $options argument. |
options (optional) | array | Array of options that can modify behavior:
|
Return value
stringA special Hook ID (or CSV string of hook IDs) that should be retained if you need to remove the hook later.
API reference based on ProcessWire core version 3.0.248