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<?php
namespace Laravel\Scout;
use Closure;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Facades\Config;
class ModelObserver
{
/**
* Indicates if Scout will dispatch the observer's events after all database transactions have committed.
*
* @var bool
*/
public $afterCommit;
/**
* Indicates if Scout will keep soft deleted records in the search indexes.
*
* @var bool
*/
protected $usingSoftDeletes;
/**
* Indicates if the model is currently force saving.
*
* @var bool
*/
protected $forceSaving = false;
/**
* The class names that syncing is disabled for.
*
* @var array
*/
protected static $syncingDisabledFor = [];
/**
* Create a new observer instance.
*
* @return void
*/
public function __construct()
{
$this->afterCommit = Config::get('scout.after_commit', false);
$this->usingSoftDeletes = Config::get('scout.soft_delete', false);
}
/**
* Enable syncing for the given class.
*
* @param string $class
* @return void
*/
public static function enableSyncingFor($class)
{
unset(static::$syncingDisabledFor[$class]);
}
/**
* Disable syncing for the given class.
*
* @param string $class
* @return void
*/
public static function disableSyncingFor($class)
{
static::$syncingDisabledFor[$class] = true;
}
/**
* Determine if syncing is disabled for the given class or model.
*
* @param object|string $class
* @return bool
*/
public static function syncingDisabledFor($class)
{
$class = is_object($class) ? get_class($class) : $class;
return isset(static::$syncingDisabledFor[$class]);
}
/**
* Handle the saved event for the model.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return void
*/
public function saved($model)
{
if (static::syncingDisabledFor($model)) {
return;
}
if (! $this->forceSaving && ! $model->searchIndexShouldBeUpdated()) {
return;
}
if (! $model->shouldBeSearchable()) {
if ($model->wasSearchableBeforeUpdate()) {
$model->unsearchable();
}
return;
}
$model->searchable();
}
/**
* Handle the deleted event for the model.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return void
*/
public function deleted($model)
{
if (static::syncingDisabledFor($model)) {
return;
}
if (! $model->wasSearchableBeforeDelete()) {
return;
}
if ($this->usingSoftDeletes && $this->usesSoftDelete($model)) {
$this->whileForcingUpdate(function () use ($model) {
$this->saved($model);
});
} else {
$model->unsearchable();
}
}
/**
* Handle the force deleted event for the model.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return void
*/
public function forceDeleted($model)
{
if (static::syncingDisabledFor($model)) {
return;
}
$model->unsearchable();
}
/**
* Handle the restored event for the model.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return void
*/
public function restored($model)
{
$this->whileForcingUpdate(function () use ($model) {
$this->saved($model);
});
}
/**
* Execute the given callback while forcing updates.
*
* @param \Closure $callback
* @return mixed
*/
protected function whileForcingUpdate(Closure $callback)
{
$this->forceSaving = true;
$result = $callback();
$this->forceSaving = false;
return $result;
}
/**
* Determine if the given model uses soft deletes.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return bool
*/
protected function usesSoftDelete($model)
{
return in_array(SoftDeletes::class, class_uses_recursive($model));
}
}