laravel 5.7如何将一个控制器的变量id传递给其他控制器

Question

I have two controllers and I try pass id of variable form method one controller to method to second controller and I got an error like this >MethodNotAllowedHttpException . I will add that my url after the action looks like this >http://localhost/comment?12 . How is the best way of solving this problem ?

Answer 1

You are most probably getting MethodNotAllowedException, because you are opening a route that is defined as a POST route via GET or the other way around.

To avoid that you can use php artisan route:list and get a list of all defined routes and see how you should "access" them:

+--------+-----------+----------------------------------------------------+------------------------+------------------------------------------------------------------------+--------------+
| Domain | Method    | URI                                                | Name                   | Action                                                                 | Middleware   |
+--------+-----------+----------------------------------------------------+------------------------+------------------------------------------------------------------------+--------------+
|        | GET|HEAD  | /a/show/{id}                                       |                        | App\Http\Controllers\AController@show                                  | web          |
|        | GET|HEAD  | /b/show/{id}                                       |                        | App\Http\Controllers\BController@show                                  | web          |

So let's say you have 2 controllers: AController and BController. Each of the controllers have a show() method declared in them.

class AController extends Controller {

    //... other AController related code

    public function show($id) {
        dd($id);
    }
}


class BController extends Controller  {

    //... other BController related code

    public function show($id) {
        dd($id);
    }

}

Then you can define your routes like this:

Route::get('/a/show/{id}', 'AController@show');

Links like: example.com/a/show/10 will "load" AController's show() method. All we have in our AController::show() method's body is dump and die on $id, we will get 10 printed if we visit that link.

We can replace that dd($id); with:

redirect()->action('BController@show', ['id' => $id]);

And define another route:

Route::get('/b/show/{id}', 'BController@show');

This way if we open the previous link: example.com/a/show/10, we will be redirected to: example.com/b/show/10 and BController::show() method will be executed and it prints the variable using dump and die.

Key points:

• Route Parameters
• Controller Parameters
• redirect()-ing