To generate a signed URL in Laravel, use URL::signedRoute or URL::temporarySignedRoute. 1. Use URL::signedRoute('route.name', [params]) to generate a signed URL with a signature parameter. 2. Use URL::temporarySignedRoute('route.name', expiration, [params]) to generate a URL valid only for a set time. 3. Validate the signature in your controller using $request->hasValidSignature() or apply the 'signed' middleware to automatically validate the URL. Signed URLs are ideal for secure, temporary access like password resets, email verification, or file downloads without requiring authentication. Always validate the signature before executing critical actions and set reasonable expiration times for temporary URLs.
To generate a signed URL in Laravel, you can use the built-in URL signing features provided by the framework. These URLs include a signature that verifies the request hasn't been tampered with, making them useful for things like temporary access links or password reset emails.
Using URL::signedRoute
The most common way to generate a signed URL is using the URL::signedRoute method. This method creates a URL for a named route and appends a signature that verifies the integrity of the URL parameters.
For example:
use Illuminate\Support\Facades\URL;
$url = URL::signedRoute('route.name', ['user' => 1]);This will generate a URL like:
http://your-app.test/route/name?user=1&signature=abc123xyz
You can also specify an expiration time for the link if needed:
$url = URL::temporarySignedRoute('route.name', now()->addMinutes(30), ['user' => 1]);This creates a URL that’s only valid for 30 minutes.
Make sure the route you're generating a signed URL for actually exists and accepts the parameters you're passing.
Validating Signed URLs in Your Controller
Once a user clicks on the signed URL, you need to verify its validity inside your controller method. You can do this using the hasValidSignature method on the request object.
Here's how you might handle it:
use Illuminate\Http\Request;
public function show(Request $request)
{
if (!$request->hasValidSignature()) {
abort(403, 'Invalid or expired URL');
}
// Proceed with your logic here
}Alternatively, you can use middleware to automatically validate the signature before reaching your controller.
Laravel provides a middleware called ValidateSignature which you can apply directly in your routes:
Route::get('/example', [ExampleController::class, 'show'])->name('example.show')->middleware('signed');With this setup, Laravel handles the validation automatically.
- If the signature is missing or invalid, it returns a 403 error.
- If the URL has expired (for temporary signed URLs), it also blocks the request.
Use Cases and When to Use Signed URLs
Signed URLs are especially useful when you want to share sensitive or limited-time access without requiring full authentication.
Common scenarios include:
- Password reset links
- Email verification links
- Temporary file download links
- Invitation links for registration
They’re not meant to replace authentication entirely but provide a secure way to handle one-off actions that don’t require logging in.
A few tips:
- Always check for a valid signature before performing any critical action.
- For temporary URLs, set a reasonable expiration time.
- Don’t rely solely on obfuscation — the signature is about integrity, not secrecy.
That’s basically how you generate and use signed URLs in Laravel. It's straightforward once you understand the methods and flow.
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