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Directory >> /home/whitjouh/public_html/core/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/

File / Folder	Size	Action
.	-
GuardsAttributes.php	5.876KB	edt ren
HasAttributes.php	65.347KB	edt ren
HasEvents.php	10.462KB	edt ren
HasGlobalScopes.php	3.157KB	edt ren
HasRelationships.php	30.038KB	edt ren
HasTimestamps.php	4.967KB	edt ren
HasUlids.php	2.14KB	edt ren
HasUniqueIds.php	0.988KB	edt ren
HasUuids.php	2.135KB	edt ren
HidesAttributes.php	2.841KB	edt ren
QueriesRelationships.php	31.977KB	edt ren

<?php

namespace Illuminate\Database\Eloquent\Concerns;

use Illuminate\Contracts\Events\Dispatcher;
use Illuminate\Events\NullDispatcher;
use Illuminate\Support\Arr;
use InvalidArgumentException;

trait HasEvents
{
    /**
     * The event map for the model.
     *
     * Allows for object-based events for native Eloquent events.
     *
     * @var array
     */
    protected $dispatchesEvents = [];

/**
     * User exposed observable events.
     *
     * These are extra user-defined events observers may subscribe to.
     *
     * @var array
     */
    protected $observables = [];

/**
     * Register observers with the model.
     *
     * @param  object|array|string  $classes
     * @return void
     *
     * @throws \RuntimeException
     */
    public static function observe($classes)
    {
        $instance = new static;

foreach (Arr::wrap($classes) as $class) {
            $instance->registerObserver($class);
        }
    }

/**
     * Register a single observer with the model.
     *
     * @param  object|string  $class
     * @return void
     *
     * @throws \RuntimeException
     */
    protected function registerObserver($class)
    {
        $className = $this->resolveObserverClassName($class);

// When registering a model observer, we will spin through the possible events
        // and determine if this observer has that method. If it does, we will hook
        // it into the model's event system, making it convenient to watch these.
        foreach ($this->getObservableEvents() as $event) {
            if (method_exists($class, $event)) {
                static::registerModelEvent($event, $className.'@'.$event);
            }
        }
    }

/**
     * Resolve the observer's class name from an object or string.
     *
     * @param  object|string  $class
     * @return string
     *
     * @throws \InvalidArgumentException
     */
    private function resolveObserverClassName($class)
    {
        if (is_object($class)) {
            return get_class($class);
        }

if (class_exists($class)) {
            return $class;
        }

throw new InvalidArgumentException('Unable to find observer: '.$class);
    }

/**
     * Get the observable event names.
     *
     * @return array
     */
    public function getObservableEvents()
    {
        return array_merge(
            [
                'retrieved', 'creating', 'created', 'updating', 'updated',
                'saving', 'saved', 'restoring', 'restored', 'replicating',
                'deleting', 'deleted', 'forceDeleting', 'forceDeleted',
            ],
            $this->observables
        );
    }

/**
     * Set the observable event names.
     *
     * @param  array  $observables
     * @return $this
     */
    public function setObservableEvents(array $observables)
    {
        $this->observables = $observables;

return $this;
    }

/**
     * Add an observable event name.
     *
     * @param  array|mixed  $observables
     * @return void
     */
    public function addObservableEvents($observables)
    {
        $this->observables = array_unique(array_merge(
            $this->observables, is_array($observables) ? $observables : func_get_args()
        ));
    }

/**
     * Remove an observable event name.
     *
     * @param  array|mixed  $observables
     * @return void
     */
    public function removeObservableEvents($observables)
    {
        $this->observables = array_diff(
            $this->observables, is_array($observables) ? $observables : func_get_args()
        );
    }

/**
     * Register a model event with the dispatcher.
     *
     * @param  string  $event
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    protected static function registerModelEvent($event, $callback)
    {
        if (isset(static::$dispatcher)) {
            $name = static::class;

static::$dispatcher->listen("eloquent.{$event}: {$name}", $callback);
        }
    }

/**
     * Fire the given event for the model.
     *
     * @param  string  $event
     * @param  bool  $halt
     * @return mixed
     */
    protected function fireModelEvent($event, $halt = true)
    {
        if (! isset(static::$dispatcher)) {
            return true;
        }

// First, we will get the proper method to call on the event dispatcher, and then we
        // will attempt to fire a custom, object based event for the given event. If that
        // returns a result we can return that result, or we'll call the string events.
        $method = $halt ? 'until' : 'dispatch';

$result = $this->filterModelEventResults(
            $this->fireCustomModelEvent($event, $method)
        );

if ($result === false) {
            return false;
        }

return ! empty($result) ? $result : static::$dispatcher->{$method}(
            "eloquent.{$event}: ".static::class, $this
        );
    }

/**
     * Fire a custom model event for the given event.
     *
     * @param  string  $event
     * @param  string  $method
     * @return mixed|null
     */
    protected function fireCustomModelEvent($event, $method)
    {
        if (! isset($this->dispatchesEvents[$event])) {
            return;
        }

$result = static::$dispatcher->$method(new $this->dispatchesEvents[$event]($this));

if (! is_null($result)) {
            return $result;
        }
    }

/**
     * Filter the model event results.
     *
     * @param  mixed  $result
     * @return mixed
     */
    protected function filterModelEventResults($result)
    {
        if (is_array($result)) {
            $result = array_filter($result, function ($response) {
                return ! is_null($response);
            });
        }

return $result;
    }

/**
     * Register a retrieved model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function retrieved($callback)
    {
        static::registerModelEvent('retrieved', $callback);
    }

/**
     * Register a saving model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function saving($callback)
    {
        static::registerModelEvent('saving', $callback);
    }

/**
     * Register a saved model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function saved($callback)
    {
        static::registerModelEvent('saved', $callback);
    }

/**
     * Register an updating model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function updating($callback)
    {
        static::registerModelEvent('updating', $callback);
    }

/**
     * Register an updated model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function updated($callback)
    {
        static::registerModelEvent('updated', $callback);
    }

/**
     * Register a creating model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function creating($callback)
    {
        static::registerModelEvent('creating', $callback);
    }

/**
     * Register a created model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function created($callback)
    {
        static::registerModelEvent('created', $callback);
    }

/**
     * Register a replicating model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function replicating($callback)
    {
        static::registerModelEvent('replicating', $callback);
    }

/**
     * Register a deleting model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function deleting($callback)
    {
        static::registerModelEvent('deleting', $callback);
    }

/**
     * Register a deleted model event with the dispatcher.
     *
     * @param  \Illuminate\Events\QueuedClosure|\Closure|string|array  $callback
     * @return void
     */
    public static function deleted($callback)
    {
        static::registerModelEvent('deleted', $callback);
    }

/**
     * Remove all the event listeners for the model.
     *
     * @return void
     */
    public static function flushEventListeners()
    {
        if (! isset(static::$dispatcher)) {
            return;
        }

$instance = new static;

foreach ($instance->getObservableEvents() as $event) {
            static::$dispatcher->forget("eloquent.{$event}: ".static::class);
        }

foreach (array_values($instance->dispatchesEvents) as $event) {
            static::$dispatcher->forget($event);
        }
    }

/**
     * Get the event dispatcher instance.
     *
     * @return \Illuminate\Contracts\Events\Dispatcher
     */
    public static function getEventDispatcher()
    {
        return static::$dispatcher;
    }

/**
     * Set the event dispatcher instance.
     *
     * @param  \Illuminate\Contracts\Events\Dispatcher  $dispatcher
     * @return void
     */
    public static function setEventDispatcher(Dispatcher $dispatcher)
    {
        static::$dispatcher = $dispatcher;
    }

/**
     * Unset the event dispatcher for models.
     *
     * @return void
     */
    public static function unsetEventDispatcher()
    {
        static::$dispatcher = null;
    }

/**
     * Execute a callback without firing any model events for any model type.
     *
     * @param  callable  $callback
     * @return mixed
     */
    public static function withoutEvents(callable $callback)
    {
        $dispatcher = static::getEventDispatcher();

if ($dispatcher) {
            static::setEventDispatcher(new NullDispatcher($dispatcher));
        }

try {
            return $callback();
        } finally {
            if ($dispatcher) {
                static::setEventDispatcher($dispatcher);
            }
        }
    }
}

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