laravel自定义软删除

laravel框架自带的字段为deleted_at，但是我们现在的要求是改成is_delete 0=未删除，1=删除
这样问题就来了。deleted_at为时间戳格式。而我们的is_delete，直接use SoftDeletes会报错。
这样我们就需要自定义软删除了
laravel框架自带的model是直接执行delete操作，但是可以通过简单的复制代码把它设置为软删除，需要做到以下2点：

1）设置查询作用域

参考文档：https://docs.golaravel.com/docs/5.6/eloquent/#query-scopes

创建 SoftDeletingScope 类文件

<?phpnamespace App\ApiServices\Models\Utils;use Illuminate\Database\Eloquent\Scope;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Builder;class SoftDeletingScope implements Scope
{/*** 要添加到构建器的所有扩展。** @var string[]*/protected $extensions = ['Restore', 'WithTrashed', 'WithoutTrashed', 'OnlyTrashed'];/*** 将范围应用于给定的 Eloquent 查询构建器。** @param  \Illuminate\Database\Eloquent\Builder  $builder* @param  \Illuminate\Database\Eloquent\Model  $model* @return void*/public function apply(Builder $builder, Model $model){$builder->where('is_delete', '=', 0);}/*** 使用所需的功能扩展查询构建器。** @param  \Illuminate\Database\Eloquent\Builder  $builder* @return void*/public function extend(Builder $builder){foreach ($this->extensions as $extension) {$this->{"add{$extension}"}($builder);}$builder->onDelete(function (Builder $builder) {$column = $this->getDeletedAtColumn($builder);return $builder->update([$column => 1,]);});}/*** 获取构建器的“删除于”列。** @param  \Illuminate\Database\Eloquent\Builder  $builder* @return string*/protected function getDeletedAtColumn(Builder $builder){if (count((array) $builder->getQuery()->joins) > 0) {return $builder->getModel()->getQualifiedDeletedAtColumn();}return $builder->getModel()->getDeletedAtColumn();}/*** 将恢复扩展添加到构建器。** @param  \Illuminate\Database\Eloquent\Builder  $builder* @return void*/protected function addRestore(Builder $builder){$builder->macro('restore', function (Builder $builder) {$builder->withTrashed();return $builder->update([$builder->getModel()->getDeletedAtColumn() => 0]);});}/*** 将 with-trashed 扩展添加到构建器。** @param  \Illuminate\Database\Eloquent\Builder  $builder* @return void*/protected function addWithTrashed(Builder $builder){$builder->macro('withTrashed', function (Builder $builder, $withTrashed = true) {if (! $withTrashed) {return $builder->withoutTrashed();}return $builder->withoutGlobalScope($this);});}/*** 将没有垃圾的扩展添加到构建器。** @param  \Illuminate\Database\Eloquent\Builder  $builder* @return void*/protected function addWithoutTrashed(Builder $builder){$builder->macro('withoutTrashed', function (Builder $builder) {$model = $builder->getModel();$builder->withoutGlobalScope($this)->whereNull($model->getQualifiedDeletedAtColumn());return $builder;});}/*** Add the only-trashed extension to the builder.** @param  \Illuminate\Database\Eloquent\Builder  $builder* @return void*/protected function addOnlyTrashed(Builder $builder){$builder->macro('onlyTrashed', function (Builder $builder) {$model = $builder->getModel();$builder->withoutGlobalScope($this)->whereNotNull($model->getQualifiedDeletedAtColumn());return $builder;});}
}

2）删除动作设置为更新（使用is_deleted=1标识为已删除）


<?phpnamespace App\ApiServices\Models\Utils;trait SoftDeletes
{/*** Indicates if the model is currently force deleting.** @var bool*/protected $forceDeleting = false;/*** Boot the soft deleting trait for a model.** @return void*/public static function bootSoftDeletes(){static::addGlobalScope(new SoftDeletingScope);}/*** 为实例初始化软删除特性。** @return void*/public function initializeSoftDeletes(){if (! isset($this->casts[$this->getDeletedAtColumn()])) {$this->casts[$this->getDeletedAtColumn()] = 'bool';}}/*** 对软删除模型强制执行硬删除。** @return bool|null*/public function forceDelete(){$this->forceDeleting = true;return tap($this->delete(), function ($deleted) {$this->forceDeleting = false;if ($deleted) {$this->fireModelEvent('forceDeleted', false);}});}/*** 对该模型实例执行实际的删除查询。** @return mixed*/protected function performDeleteOnModel(){if ($this->forceDeleting) {$this->exists = false;return $this->setKeysForSaveQuery($this->newModelQuery())->forceDelete();}return $this->runSoftDelete();}/*** 对该模型实例执行实际的删除查询。** @return void*/protected function runSoftDelete(){$query = $this->setKeysForSaveQuery($this->newModelQuery());$isDelete = 1;$columns = [$this->getDeletedAtColumn() => $isDelete];$this->{$this->getDeletedAtColumn()} = $isDelete;if ($this->timestamps && ! is_null($this->getUpdatedAtColumn())) {$this->{$this->getUpdatedAtColumn()} = time();$columns[$this->getUpdatedAtColumn()] = $this->fromDateTime(time());}$query->update($columns);$this->syncOriginalAttributes(array_keys($columns));$this->fireModelEvent('trashed', false);}/*** 恢复软删除的模型实例。** @return bool|null*/public function restore(){// If the restoring event does not return false, we will proceed with this// restore operation. Otherwise, we bail out so the developer will stop// the restore totally. We will clear the deleted timestamp and save.if ($this->fireModelEvent('restoring') === false) {return false;}$this->{$this->getDeletedAtColumn()} = null;// Once we have saved the model, we will fire the "restored" event so this// developer will do anything they need to after a restore operation is// totally finished. Then we will return the result of the save call.$this->exists = true;$result = $this->save();$this->fireModelEvent('restored', false);return $result;}/*** 确定模型实例是否已被软删除。** @return bool*/public function trashed(){return ! empty($this->{$this->getDeletedAtColumn()});}/*** Register a "restoring" model event callback with the dispatcher.** @param  \Closure|string  $callback* @return void*/public static function restoring($callback){static::registerModelEvent('restoring', $callback);}/*** 向调度程序注册“恢复的”模型事件回调。** @param  \Closure|string  $callback* @return void*/public static function restored($callback){static::registerModelEvent('restored', $callback);}/*** 向调度程序注册“forceDeleted”模型事件回调。** @param  \Closure|string  $callback* @return void*/public static function forceDeleted($callback){static::registerModelEvent('forceDeleted', $callback);}/*** 确定模型当前是否正在强制删除。** @return bool*/public function isForceDeleting(){return $this->forceDeleting;}/*** Get the name of the "deleted at" column.** @return string*/public function getDeletedAtColumn(){return 'is_delete';}/*** 获取完全限定的“删除于”列。** @return string*/public function getQualifiedDeletedAtColumn(){return $this->qualifyColumn($this->getDeletedAtColumn());}}

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