自定义“未找到" Laravel的路由“显式绑定"的行为 [英] Customizing The "Not Found" Behavior of Laravel's Routing "Explicit Binding"

问题描述

以下是文档: https://laravel.com/docs/5.2/routing#route-model-binding

路线:

Route::group(['prefix' => 'u'], function () {
    Route::post('create', ['as' => 'createUser', 'uses' => 'UserController@create']);
    Route::get('{uuid}', ['as' => 'userDashboard', 'uses' => 'UserController@dashboard']);
});

UserController.php:

The UserController.php:

public function dashboard(User $uuid)
{
    return View::make('user.dashboard');
}

每当在数据库中找不到用户时，它都会引发以下两个异常:

Whenever the User isn't found in the database it throws these two exceptions:

2/2
NotFoundHttpException in Handler.php line 103:
No query results for model [App\User].

1/2
ModelNotFoundException in Builder.php line 303:
No query results for model [App\User].

如何自定义错误?我想重定向到createUser路由.该文档指示将Closure作为第三个参数传递，但是我不知道如何使用当前代码执行该操作.

How do I customize the error? I want to redirect to the createUser route. The documentation instructs to pass a Closure as a third argument but I don't know how to do that with my current code.

编辑1

这是到目前为止我没有成功尝试过的事情:

This is what I've tried so far without success:

   Route::model('{uuid}', ['as' => 'userDashboard', 'uses' => 'UserController@dashboard'], function () {
        App::abort(403, 'Test.');
    });

   Route::get('{uuid}', ['as' => 'userDashboard', 'uses' => 'UserController@dashboard'], function () {
        App::abort(403, 'Test.');
    });

推荐答案

这实际上非常简单.由于没有一个答案能真正给出确切的答案，因此我自己回答.

This is actually very simple. As none of the answers really give a definite answer I am answering it myself.

在文件RouteServiceController.php的boot函数中添加以下内容:

In the file RouteServiceController.php's boot function add the following:

    $router->model('advertiser', 'App\Advertiser', function () {
        throw new AdvertiserNotFoundException;
    });

然后在App\Exceptions中创建一个新的空类，称为(c5):

Then create a new empty class in App\Exceptions called (in this case) AdvertiserNotFoundException.php:

<?php

namespace App\Exceptions;

use Exception;

class AdvertiserNotFoundException extends Exception
{

}

最后要做的是像这样在Handler.php的render函数(App\Exception)中捕获异常:

The last thing to do is to catch the exception in the Handler.php's render function (App\Exception) like so:

public function render($request, Exception $e)
{
    switch ($e)
    {
        case ($e instanceof AdvertiserNotFoundException):
            //Implement your behavior here (redirect, etc...)
    }
    return parent::render($request, $e);
}

就是这样！ :)

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