Error Missing required parameters for [Route] after upgrading Laravel 5.8 to 6.0

Question

After upgrading Laravel 5.8 to 6.0 I get the below error:

local.ERROR: Missing required parameters for [Route: playlist-song.show] [URI: public/admin/playlist-song/{playlist_song}]. {"userId":1,"exception":"[object] (Illuminate\Routing\Exceptions\UrlGenerationException(code: 0):Missing required parameters for [Route: playlist-song.show] [URI: public/admin/playlist-song/{playlist_song}].at /var/www/vendor/laravel/framework/src/Illuminate/Routing/Exceptions/UrlGenerationException.php:17)

Chrome Inspect Result:

I have tried to find error and update route using _ or - but still can't solve this error:

any idea to solve this issue?

Thank You in Advance...

===Update

I suspect error here:

$datatables = app('datatables')->of($model)
 ->addColumn('action', function ($model) {
                return " $model->id]) ."' class='btn btn-success btn-sm'>" . 
                        "  $model->id]) . "' class='btn btn-primary btn-sm'>" .
                        " ";                        
});

Update the URL like below still can not solve the problem:

href='". {{ route('playlist-song.show', ['playlist-song' => $model]) }}."'

href="{{ route('playlist-song.show', ['playlist-song' => $model]) }}"

user_436560 · Answer

Your error tells you that your playlist_song parameter is missing. You will need to specify its value. A try would be

$datatables = app('datatables')->of($model)
 ->addColumn('action', function ($model) {
                return " $model->id]) ."' class='btn btn-success btn-sm'>" . 
                        "  $model->id]) . "' class='btn btn-primary btn-sm'>" .
                        " ";                        
});

This specifies the parameter. If you still have problems, then let me know what your new error message/problem is.

user_9540971 · Answer

you can do this by using view also as the following:

$datatables = app('datatables')->of($model)
 ->addColumn('action', function($model) {
                return view('partial.action', compact('model'));
            });

create your view where you want, and you can put inside it normal html code without concatenation and any other issue

the blade file :

Error Missing required parameters for [Route] after upgrading Laravel 5.8 to 6.0

2 Answers