Laravel如何使用Observer實作日誌管理模組

Laravel使用Observer（觀察者）實作日誌管理模組

寫在前面：
這裡實作日誌管理寫了兩篇，第一篇是簡單的模型增刪改監聽並記錄日誌。第二篇主要介紹的是透過匯入檔案進行批次資料處理無法很好的被監聽處理到，這一部分的資料處理邏輯如何被記錄下來。詳細請看Laravel日誌管理記錄匯入檔案後的資料變化。

1、建立observer文件，我這裡要記錄倉庫庫存模組的操作日誌，所以執行下面的語句，會在app/Observers下方建立WarehouseInventoryObserver檔案。

php artisan make:observer WarehouseInventoryObserver --model=WarehouseInventory

由於模型都是放在app/Models下面，所以要指定路徑。

php artisan make:observer WarehouseInventoryObserver --model=Models/WarehouseInventory

在App\Providers\AppServiceProvider下面開啟observer

public function boot()
    {
        WarehouseInventory::observe(WarehouseInventoryObserver::class);
    }

2、監聽該模組下的增刪改操作，這裡使用Repository當然也可以直接使用model。 created、updated、deleted分別監聽WarehouseInventory模型的新增、更新和刪除的操作。

<?phpnamespace App\Observers;use App\Models\Warehouse;use App\Models\WarehouseInventory;use App\Repositories\ActionLogRepository;use Illuminate\Support\Arr;use Illuminate\Support\Facades\Auth;class WarehouseInventoryObserver{
    protected $user_id;

    protected $warehouse;

    protected $actionLogRepository;

    public function __construct(
        Warehouse $warehouse,
        ActionLogRepository $actionLogRepository
    )
    {
        $this->user_id = Auth::user() ? Auth::user()->id : null;
        $this->warehouse = $warehouse->pluck(&#39;name&#39;, &#39;id&#39;);
        $this->actionLogRepository = $actionLogRepository;
    }

    //创建
    public function created(WarehouseInventory $warehouseInventory)
    {
        if (!empty($this->user_id)) {
            $attributes = $warehouseInventory->getAttributes();
            $attributes = Arr::only($attributes, [&#39;warehouse_id&#39;, &#39;seller_sku&#39;, &#39;quantity&#39;, &#39;box&#39;]);
            $warehouse = $this->warehouse->get($attributes[&#39;warehouse_id&#39;]);
            //拼接数据
            $data = [
                &#39;module&#39; => &#39;warehouse_inventory&#39;,
                &#39;user_id&#39; => $this->user_id,
                &#39;type&#39; => &#39;create&#39;,
                &#39;content&#39; => [
                    &#39;warehouse&#39; => $warehouse,
                    &#39;seller_sku&#39; => $attributes[&#39;seller_sku&#39;],
                    &#39;original_quantity&#39; => 0,
                    &#39;current_quantity&#39; => $attributes[&#39;quantity&#39;],
                    &#39;box&#39; => $attributes[&#39;box&#39;]
                ]
            ];

            $this->actionLogRepository->makeModel()->create($data);
        }
    }

    //更新
    public function updated(WarehouseInventory $warehouseInventory)
    {
        if (!empty($this->user_id)) {
            $original = $warehouseInventory->getOriginal();
            $dirty = $warehouseInventory->getDirty();
            $dirty = Arr::except($dirty, [&#39;remark&#39;, &#39;updated_at&#39;]);
            if (count($dirty)) {
                if (Arr::has($dirty, &#39;warehouse_id&#39;)) {
                    $warehouse = $this->warehouse->get($dirty[&#39;warehouse_id&#39;]);
                } else {
                    $warehouse = $this->warehouse->get($original[&#39;warehouse_id&#39;]);
                }
                //拼接数据
                $data = [
                    &#39;module&#39; => &#39;warehouse_inventory&#39;,
                    &#39;user_id&#39; => $this->user_id,
                    &#39;type&#39; => &#39;update&#39;,
                    &#39;content&#39; => [
                        &#39;warehouse&#39; => $warehouse,
                        &#39;seller_sku&#39; => $original[&#39;seller_sku&#39;],
                        &#39;original_quantity&#39; => $original[&#39;quantity&#39;],
                        &#39;current_quantity&#39; => $dirty[&#39;quantity&#39;],
                        &#39;box&#39; => (Arr::has($dirty, &#39;box&#39;)) ? $dirty[&#39;box&#39;] : $original[&#39;box&#39;]
                    ]
                ];

                $this->actionLogRepository->makeModel()->create($data);
            }
        }
    }

    //删除
    public function deleted(WarehouseInventory $warehouseInventory)
    {
        if (!empty($this->user_id)) {

            $original = $warehouseInventory->getOriginal();
            $warehouse = $this->warehouse->get($original[&#39;warehouse_id&#39;]);
            //拼接数据
            $data = [
                &#39;module&#39; => &#39;warehouse_inventory&#39;,
                &#39;user_id&#39; => $this->user_id,
                &#39;type&#39; => &#39;delete&#39;,
                &#39;content&#39; => [
                    &#39;warehouse&#39; => $warehouse,
                    &#39;seller_sku&#39; => $original[&#39;seller_sku&#39;],
                    &#39;original_quantity&#39; => $original[&#39;quantity&#39;],
                    &#39;current_quantity&#39; => 0,
                    &#39;box&#39; => $original[&#39;box&#39;]
                ]
            ];

            $this->actionLogRepository->makeModel()->create($data);
        }
    }}

3、資料庫

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