Reading Cookie Value Issue

I am trying to build an app that creates a cookie and stores a “station” value in a cookie parameter named “station_id”. It get generated when someone selects a “station” from a popup menu and then submits it to a function named “setStation”. that function looks like this:

 public function setStation(Request $request)
    {
        $request->validate([
            'station_id' => 'required|exists:stations,id',
        ]);

        // Set the 'station_id' cookie
        Cookie::queue('station_id', $request->station_id, 60 * 24 * 365 * 10); // 10 years

        return redirect()->route('display');
    }

If I add the following code immediately following the cook creation, it correctly shows me the numerical value stored in “station_id”:

$stationId = Cookie::get('station_id');
dd($stationId);

However, If I try to retrieve the value from another controller, it shows me what looks like the encrytpted value. For example, when I try to access it from the StaffingController and dump the value, using the function below:

namespace App\Http\Controllers;

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

class StaffingController extends Controller
{
    public function display()
    {
        // Retrieve 'station_id' from the cookie
        $stationId = Cookie::get('station_id');
        dd($stationId);
        
        $message = "Hello, World!";
        return view('blade-templates.staffing', compact('message', 'stationId'));

    }

I get a value of:

eyJpdiI6IjRQby9hSUZiZE4wb0lwWDBnSytwOHc9PSIsInZhbHVlIjoiNjRyZG1GTVNsMnNNODF3S29yVEU4SzAvU081QS9kamFSeElwN1lqVE10K2pwOTlKWmNqU1VJdUUrYkNLcFZJaiIsIm1hYyI6ImIzN2U0ZTUyZTMwZDBjMTRkYzRmODNlZWJjYTU4MzU4YTk3MDQyM2QwMzQxNzNjZjg3MTMyYzUzZmU1MzgwY2IiLCJ0YWciOiIifQ==

I am wondering if it has to do with the way the routes where I am trying to decrypt it are generated. I have some routes dynamically built in my ApplicationServiceProvider as shown here:

public function boot(): void
    {
        // Fetch all routes from the eam_pages table
        $dynamicRoutes = EamPage::all();

        // Loop through each route and define it dynamically
        $dynamicRoutes->each(function ($route) {
            $controllerClass = '\\App\\Http\\Controllers\\' . $route->controller_name . 'Controller';
            Route::get($route->route_name, [$controllerClass, $route->method_name])
                ->name($route->route_name);
        });
    }

What am I doing wrong?

LaryAI

1 year ago

Best Answer

Level 58

The issue you're encountering is due to Laravel's default behavior of encrypting cookies. When you set a cookie using Cookie::queue, Laravel encrypts the value. When you retrieve the cookie using Cookie::get, Laravel automatically decrypts it. However, if you see an encrypted value, it means the decryption process is not happening correctly.

Here are a few steps to troubleshoot and resolve the issue:

Ensure the APP_KEY is the same: Make sure the APP_KEY in your .env file is the same across all environments (local, staging, production). This key is used for encryption and decryption.
Check Middleware: Ensure that the EncryptCookies middleware is applied to your routes. This middleware is responsible for encrypting and decrypting cookies.
Verify Cookie Configuration: Ensure that your cookie configuration in config/session.php is correct, especially the encrypt setting.

Here is a step-by-step solution:

Step 1: Verify `APP_KEY`

Ensure that the APP_KEY in your .env file is the same across all environments.

Step 2: Check Middleware

Ensure that the EncryptCookies middleware is applied. This is usually included by default in the web middleware group.

// app/Http/Kernel.php

protected $middlewareGroups = [
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        // other middleware...
    ],
];

Step 3: Verify Cookie Configuration

Ensure that your cookie configuration in config/session.php is correct.

// config/session.php

return [
    // other settings...

    'encrypt' => true, // Ensure this is set to true
];

Step 4: Update Your Code

Ensure that you are using the Cookie facade correctly in both setting and getting the cookie.

Setting the Cookie

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

public function setStation(Request $request)
{
    $request->validate([
        'station_id' => 'required|exists:stations,id',
    ]);

    // Set the 'station_id' cookie
    Cookie::queue('station_id', $request->station_id, 60 * 24 * 365 * 10); // 10 years

    return redirect()->route('display');
}

Getting the Cookie

namespace App\Http\Controllers;

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

class StaffingController extends Controller
{
    public function display()
    {
        // Retrieve 'station_id' from the cookie
        $stationId = Cookie::get('station_id');
        dd($stationId);
        
        $message = "Hello, World!";
        return view('blade-templates.staffing', compact('message', 'stationId'));
    }
}

Step 5: Clear Cache

Sometimes, configuration or route caching can cause issues. Clear the cache using the following commands:

php artisan config:cache
php artisan route:cache
php artisan cache:clear

Conclusion

By ensuring the APP_KEY is consistent, the EncryptCookies middleware is applied, and the cookie configuration is correct, you should be able to retrieve the decrypted cookie value correctly. If the issue persists, double-check the middleware and configuration settings.

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