Events

Introduction

LdapRecord events provide a method of listening for certain LDAP actions that are called and execute tasks for that specific event.

The LdapRecord event dispatcher was actually derived from the Laravel Framework with Broadcasting & Queuing omitted to remove extra dependencies that would be required with implementing those features.

If you've worked with Laravel's event system before, this will feel very familiar.

Registering Listeners

Before we get to registering listeners, it's crucial to know that events throughout LdapRecord are fired irrespective of the current connection or provider in use.

This means that when using multiple LDAP connections, the same events will be fired. This allows you to set listeners on events that occur for all LDAP connections you utilize.

If you are required to determine which events are fired from alternate connections, see below.

To register a listener on an event, retrieve the event dispatcher and call the listen() method:

$dispatcher = \LdapRecord\Container::getEventDispatcher();

$dispatcher->listen(Binding::class, function (Binding $event) {
    $event->connection; // LdapRecord\Connections\Ldap instance
    $event->username; // 'jdoe@acme.org'
    $event->password; // 'super-secret'
});

The first argument is the event name you would like to listen for, and the second is either a closure or class name that should handle the event.

Using a Class Based Listener

When using just a class name, the class must contain a public handle() method that will handle the event.

$dispatcher = \LdapRecord\Container::getEventDispatcher();

$dispatcher->listen(Binding::class, MyApp\BindingEventHandler::class);

namespace MyApp;

use LdapRecord\Auth\Events\Binding;

class BindingEventHandler
{
    public function handle(Binding $event)
    {
        // Handle the event...
    }
}

Model Events

Model events are handled the same way as authentication events.

Simply call the event dispatcher listen() method with the model event you are wanting to listen for:

use LdapRecord\Container;
use LdapRecord\Models\Events\Saving;

$dispatcher = Container::getEventDispatcher();

$dispatcher->listen(Saving::class, function (Saving $event) {
    // Returns the model instance being saved,
    // eg. `LdapRecord\Models\Entry`
    $event->getModel();
});

Wildcard Event Listeners

You can register listeners using the * as a wildcard parameter to catch multiple events with the same listener.

Wildcard listeners will receive the event name as their first argument, and the entire event data array as their second argument:

use LdapRecord\Container;

$dispatcher = Container::getEventDispatcher();

// Listen for all model events.
$dispatcher->listen('LdapRecord\Models\Events\*', function ($eventName, array $data) {
    // Returns 'LdapRecord\Models\Events\Updating'
    echo $eventName;

    // Returns [0] => (object) LdapRecord\Models\Events\Updating;
    var_dump($data);
});

$connection = Container::getDefaultConnection();

$user = $connection->query()->find('cn=User,dc=local,dc=com');

$user->company = 'New Company';

$user->save();

Determining the Connection

If you're using multiple LDAP connections and you require the ability to determine which events belong to a certain connection, you can do so by verifying the host of the LDAP connection.

Here's an example:

use LdapRecord\Container;
use LdapRecord\Models\Events\Creating;

$dispatcher = Container::getEventDispatcher();

$dispatcher->listen(Creating::class, function ($event) {
    $connection = $event->model->getConnection();

    $host = $connection->getHost();

    echo $host; // Displays 'ldap://192.168.1.1:386'
});

Example with authentication events:

use LdapRecord\Container;
use LdapRecord\Auth\Events\Binding;

$dispatcher = Container::getEventDispatcher();

$dispatcher->listen(Binding::class, function ($event) {
    $connection = $event->connection;

    $host = $connection->getHost();

    echo $host; // Displays 'ldap://192.168.1.1:386'
});

List of Events

Authentication Events

There are several events that are fired during initial and subsequent binds to your configured LDAP server. Here is a list of all events that are fired:

Model Events

There are several events that are fired during the creation, updating and deleting of all models.

Here is a list of all events that are fired: