Laravel - Is it possible to validate a get wildcard Request with Illuminate\Foundation\Http\FormR-CodePudding

I have a GET route with a wildcard day.

This day wildcard is a string like so: 20220507 (YYYYMMDD).

After validation the string I wish to make a proper response. Before sending the response I want to validate the string length and the format.

My question is, is it possible to validate the string with Illuminate\Foundation\Http\FormRequest ou Illuminate\Http\Request make:request ? Or they only accepet Post Requests ?

Code:

php artisan make:request CalendarDayRequest

Example get route in web.php

Route::get('/calendar/{day}' , 'App\Http\Controllers\HomeController@calendar')->name('calendar');

Example Controller

use App\Http\Requests\CalendarDayRequest; 
public function calendar ( CalendarDayRequest $request ) {
    // Code
}

Or Example Controller 2

use Illuminate\Http\Request;

public function calendar ( Request $request ) {
    $validated = $request->validate([
        'day' => 'required',
     ]);
}

Both of them I got the error: infinite redirect loop, redirected it too many times.

CodePudding user response：

In Example 1:

You should overwrite this method in CalendarDayRequest:

protected function failedValidation(Validator $validator) {
    throw (new ValidationException($validator))
                ->errorBag($this->errorBag)
                ->redirectTo($this->getRedirectUrl());
}

If client expects json, laravel will return a json field instead of redirection. You can completely change this behavior by changing this method or customizing render() method in App\Exceptions\Handler.

In Example 2:

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;

public function calendar ( Request $request ) {
    $validator = Validator::make($request->all(), ['day'=>'required']);

    if ($validator->fails()) {
        $errors = $validator->errors();
        $messages = $validator->errors()->messages();
        $messageBag = $validator->errors()->getMessageBag();
    };
}

So you can use messages of validator for informing client.

CodePudding user response：

Firstly, you can not validate route parameters inside Form Request

But, you can use regex for validating your route Example:

Route::get('/calendar/{day}', 'App\Http\Controllers\HomeController@calendar')
    ->name('calendar')
    ->where('day', '/^[0-9]{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$/');

If You still want to use validate() function or Form Request

$request->merge[
   'day' => $day
];

$this->validate($request, [
   'day' => 'date_format:Ymd',
]);

Form Request Way - Override all() method

public function all($k = null){
   $data = parent::all($k);
   $data['day'] = $this->route('day');
   return $data;
}

Laravel 5 how to validate route parameters?

But I would suggest you to send it as request parameter if you want to use validate() function.