automatically failing custom request in laravel

Question

I have created a custom request that needs to check a variable before proceeding forward. This is my CustomRequest and have something like this

class CustomRequest extends FormRequest
{

    public function rules(){
        if ($variable == "abc") {
            return [
                "method"             => [
                    "required",
                    "in:mail",
                ]
            ];
        }
    }

}

And in my controller it is

public function addMethod(CustomRequest $request)
{
    //
}

I want that if the $variable is not equal to abc it just automatically fails and redirects the user back with message. I don't know how to do that.

Is there any possibility to achieve such functionality?

This is akin to CSRF checks, so it's possible. You just need to check for `Input::get('variable')` or `$request->get('variable')` — aynber, Jun 12 '19 at 13:02
I reckon, but I just don't want to touch the controller method. Everything should be in Request class — Ali Rasheed, Jun 12 '19 at 13:04
Using a [Middleware](https://laravel.com/docs/master/middleware) might be the best use for this instead of the CustomRequest class. Middlewares process the request first before it gets to a controller. — aynber, Jun 12 '19 at 13:05
maybe try `if($variable != "abc"){return back()->withMessage('message')}` im not sure if this is what you mean tho — HashtagForgotName, Jun 12 '19 at 13:06
@SagarGautam I think authorize is the right answer. I should be able to redirect? — Ali Rasheed, Jun 12 '19 at 13:10
@anyber Middleware means updating routes or Controller which I cannot. — Ali Rasheed, Jun 12 '19 at 13:10
@Ali Rasheed then you can make the message like this `['fail' => 'error message']` — HashtagForgotName, Jun 12 '19 at 13:12

score 1 · Answer 1 · answered Jun 12 '19 at 13:11

1

Add following function in your custom form request class.

public function authorize()
{
    return true;
}

Then it will work.

By default, it is set to false and we have to set it true manually.

answered Jun 12 '19 at 13:11

Sagar Gautam

9,049
6
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Is there a way to add a message and redirect? – Ali Rasheed Jun 12 '19 at 13:14
@AliRasheed You have to make a custom rule for that which will handle all these things – Sagar Gautam Jun 12 '19 at 13:15
If it fails authorization is throws an exception, is it possible to rather send a json response? Keeping in mind no changes in controller method. – Ali Rasheed Jun 12 '19 at 13:39
@AliRasheed You can send validation errors as json response by extending a function of the form request. That is failedValidation – Sagar Gautam Jun 12 '19 at 14:13

score 1 · Answer 2 · answered Jun 12 '19 at 13:13

1

Just make a middleware, put it in the Kernel so that it can be applied for all routes and inside the middleware, you can check the variable value and take appropriate action.

answered Jun 12 '19 at 13:13

Abhay Maurya

11,819
8
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Hmm, this sounds interesting too. But I should be able to skip some routes after in web.php or controller? – Ali Rasheed Jun 12 '19 at 13:15
In that case you dont put it in kernet as global ones, just register it normally and then in your web.php, you can create a route group where you can apply this middleware to selected routes – Abhay Maurya Jun 12 '19 at 13:49

automatically failing custom request in laravel

2 Answers2