php - 嵌套资源 : Missing required parameters (laravel)

Question

我对 Laravel 很陌生，老实说 - 这是一个很棒的框架。然而，我对一些嵌套资源有点困惑——包括对它们进行增删改查。

对于我正在使用的路线

Route::resource('startups','StartupsController');
Route::resource('startups.usecases','UsecasesController');

php artisan 路线:列表

|        | GET|HEAD  | admin/startups                                   | admin.startups.index            | App\Http\Controllers\StartupsController@index                               | web,admin,auth:admin |
|        | POST      | admin/startups                                   | admin.startups.store            | App\Http\Controllers\StartupsController@store                               | web,admin,auth:admin |
|        | GET|HEAD  | admin/startups/create                            | admin.startups.create           | App\Http\Controllers\StartupsController@create                              | web,admin,auth:admin |
|        | DELETE    | admin/startups/{startup}                         | admin.startups.destroy          | App\Http\Controllers\StartupsController@destroy                             | web,admin,auth:admin |
|        | GET|HEAD  | admin/startups/{startup}                         | admin.startups.show             | App\Http\Controllers\StartupsController@show                                | web,admin,auth:admin |
|        | PUT|PATCH | admin/startups/{startup}                         | admin.startups.update           | App\Http\Controllers\StartupsController@update                              | web,admin,auth:admin |
|        | GET|HEAD  | admin/startups/{startup}/edit                    | admin.startups.edit             | App\Http\Controllers\StartupsController@edit                                | web,admin,auth:admin |
|        | GET|HEAD  | admin/startups/{startup}/usecases                | admin.startups.usecases.index   | App\Http\Controllers\UsecasesController@index                               | web,admin,auth:admin |
|        | POST      | admin/startups/{startup}/usecases                | admin.startups.usecases.store   | App\Http\Controllers\UsecasesController@store                               | web,admin,auth:admin |
|        | GET|HEAD  | admin/startups/{startup}/usecases/create         | admin.startups.usecases.create  | App\Http\Controllers\UsecasesController@create                              | web,admin,auth:admin |
|        | DELETE    | admin/startups/{startup}/usecases/{usecase}      | admin.startups.usecases.destroy | App\Http\Controllers\UsecasesController@destroy                             | web,admin,auth:admin |
|        | GET|HEAD  | admin/startups/{startup}/usecases/{usecase}      | admin.startups.usecases.show    | App\Http\Controllers\UsecasesController@show                                | web,admin,auth:admin |
|        | PUT|PATCH | admin/startups/{startup}/usecases/{usecase}      | admin.startups.usecases.update  | App\Http\Controllers\UsecasesController@update                              | web,admin,auth:admin |
|        | GET|HEAD  | admin/startups/{startup}/usecases/{usecase}/edit | admin.startups.usecases.edit    | App\Http\Controllers\UsecasesController@edit                                | web,admin,auth:admin |

对于 parent 来说，这里称为“初创公司”，一切都很好，我可以 CRUD 一切都很好。

对于 child 来说，这里称为“用例”，index、create 和 store 都可以。当我尝试在模板中添加指向编辑、删除或显示的链接时，我开始收到:缺少 [Route: admin.startups.usecases.destroy] [URI: admin/startups/{startup}/usecases 所需的参数/{用例}].

我的索引 Blade 文件中的链接:

<li><a href="{{ route('admin.startups.usecases.show',$startup->id, $usecase->id) }}">Show</a></li> 

返回那个错误。

在我的 UsecasesController 中

public function show($startup_id, $usecase_id)
    {
        $startups = $startup_id;
        $usecase = Usecase::find($usecase_id);
        return view('admin.startups.usecases.show')
        ->with('usecase', $usecase)
        ->with('startups', $startups);
    }

TLDR:我可以访问和 CRUD 父“初创公司”上的所有内容。我可以为 child 创建和存储，但不能编辑、显示或删除 - 对于“用例”。

感谢您的帮助。

Answer 1

您需要将参数作为数组传递:

route('admin.startups.usecases.show', [$startup->id, $usecase->id])

show() 方法将如下所示:

public function show($startup, $usecase)
{
    ....