php - 在 Laravel 5.1 中执行 Action 之前

Question

我在存储和更新方法中编写了以下代码:

$v = Validator::make($request->all(), [
    'field' => 'required|max:100|min:5'
]);

if ($v->fails()) {
    return redirect('route name')
                ->withErrors($v)
                ->withInput();
}

是否有在执行任何操作方法之前执行的内置操作方法？如果是这样，它对单个操作方法或 Controller 有效吗？

Answer 1

您可以使用中间件或覆盖callAction，https://laravel.com/api/5.6/Illuminate/Routing/Controller.html#method_callAction

use Illuminate\Routing\Controller;

class MyController extends Controller
{
    public function callAction($method, $parameters)
    {
        // code that runs before any action
        if (in_array($method, ['method1', 'method2'])) {
            // trigger validation
        }

        return parent::callAction($method, $parameters);
    }
}

2020 年更新:

如果您发现自己在 Laravel 5+ 中重复使用验证规则，我建议将它们添加到请求中:https://laravel.com/docs/6.x/validation#form-request-validation

/**
 * Store the incoming blog post.
 *
 * @param  StoreBlogPost  $request
 * @return Response
 */
public function store(StoreBlogPost $request)
{
    // The incoming request is valid...

    // Retrieve the validated input data...
    $validated = $request->validated();
}