Customizing The "Not Found" Behavior of Laravel's Routing "Explicit Binding" - php

Question

Here's the documentation: https://laravel.com/docs/5.2/routing#route-model-binding
The routes:
Route::group(['prefix' => 'u'], function () {
Route::post('create', ['as' => 'createUser', 'uses' => 'UserController#create']);
Route::get('{uuid}', ['as' => 'userDashboard', 'uses' => 'UserController#dashboard']);
});
The UserController.php:
public function dashboard(User $uuid)
{
return View::make('user.dashboard');
}
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].
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.
EDIT 1
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.');
});

Answer 1

This is actually very simple. As none of the answers really give a definite answer I am answering it myself.
In the file RouteServiceController.php's boot function add the following:
$router->model('advertiser', 'App\Advertiser', function () {
throw new AdvertiserNotFoundException;
});
Then create a new empty class in App\Exceptions called (in this case) AdvertiserNotFoundException.php:
<?php
namespace App\Exceptions;
use Exception;
class AdvertiserNotFoundException extends Exception
{
}
The last thing to do is to catch the exception in the Handler.php's render function (App\Exception) like so:
public function render($request, Exception $e)
{
switch ($e)
{
case ($e instanceof AdvertiserNotFoundException):
//Implement your behavior here (redirect, etc...)
}
return parent::render($request, $e);
}
That's it! :)

Answer 2

for a similar case i did,
I took the parent Illuminate\Foundation\Exceptions\Handler isHttpException function and copied it to app/Exceptions/Handler.php and changed it's name to my isUserNotFoundException.
protected function isUserNotFoundException(Exception $e)
{
return $e instanceof UserNotFoundException;
}
and than in the render function add
if ($this->isUserNotFoundException($e))
return redirect('path')->with('error',"Your error message goes here");
Following code must be placed in your RouteServiceProvider::boot method
$router->model('uuid', 'App\User', function () {
throw new UserNotFoundException;
});
and make sure to include this in your view file
and this forum post might help you
https://scotch.io/tutorials/creating-a-laravel-404-page-using-custom-exception-handlers

Answer 3

To do so you need to check if the id exist in the model like so:
public function dashboard(User $uuid)
{
if(User::find($uuid))
{
return View::make('user.dashboard');
} else {
redirect('xyz');
}
}

Answer 4

I think this tutorial will be helpful for you Laravel Model Binding

Answer 5

You could add the exception and treat in in app/Exceptions/Handler.php
/**
* Render an exception into an HTTP response.
*
* #param \Illuminate\Http\Request $request
* #param \Exception $e
* #return \Illuminate\Http\Response
*/
public function render($request, Exception $e)
{
if (!env('APP_DEBUG')) {
if ($e instanceof \Illuminate\Database\Eloquent\ModelNotFoundException) {
//treat error
return response()->view('errors.404');
}
return parent::render($request, $e);
}
Edit 1:
This piece of code is from a working project so if this doesn't work it must have an error somewhere else:
if ($e instanceof \Illuminate\Database\Eloquent\ModelNotFoundException) {
$data= \App\Data::orderBy('order', 'asc')->get();
return response()->view('errors.404', [
'data' => $data
], 404);
}
Edit 2:
You can use the above code and this tutorial in order to create a new Exception type in order to get your desired behavior. To my understanding at least. :)