Cannot wp_redirect inside Components anymore

[eavonius]

Version

4.0.2

What did you expect to happen?

Previously if I added a wp_redirect call in the constructor of a component, it would go to the new page. I usually do a check to know if it's a post or not (this is for a form post being handled by the component). Regardless, wp_redirect doesn't do anything. I do have exit; called right after it.

What actually happens?

The same page appears.

Steps to reproduce

1. Create an acorn component
2. Add it to a blade template
3. Add a call to wp_redirect to the constructor
4. Hit the page

System info

No response

Log output

No response

Please confirm this isn't a support request.

No

[retlehs]

Can you please post some actual code needed to reproduce this?

[eavonius]

1. Create a file under resources/views/components/forms/test-form.blade.php with the following:

   <form method="post">
      <input type="text" name="test" />
      <input type="submit" />
   </form>

2. Create a file under app/View/Components/Forms/TestForm.php with the contents:

   <?php
   declare(strict_types=1);
   
   namespace App\View\Components\Forms;
   
   use Roots\Acorn\View\Component;
   use Illuminate\Http\Request;
   
   class TestForm extends Component
   {
       public function __construct(Request $request)
       {
           if ($request->isMethod("post")) {
               error_log("Redirecting");
   
               wp_redirect('/thank-you/');
               exit;
           }
       }
   
       public function render()
       {
           error_log("Rendering");
   
           return $this->view('components.forms.test-form');
       }
   }

3. Add the component to the index.blade.php for your theme:

   <x-forms.test-form />
   

4. Bring up the page. Type "test" in the input field and click submit. The following error occurs in Wordpress (where this would simply redirect to the URL /thank-you/ before:

   [07-Feb-2024 19:51:29 UTC] PHP Warning:  Cannot modify header information - headers already sent by (output started at /workspaces/**redacted**/wordpress/web/wp/wp-includes/class-wp-styles.php:214) in /workspaces/**redacted**/wordpress/web/wp/wp-includes/pluggable.php on line 1435
   [07-Feb-2024 19:51:29 UTC] PHP Warning:  Cannot modify header information - headers already sent by (output started at /workspaces/**redacted**/wordpress/web/wp/wp-includes/class-wp-styles.php:214) in /workspaces/**redacted**/wordpress/web/wp/wp-includes/pluggable.php on line 1438
   

[Log1x]

I am going to close this issue as nothing has changed in Acorn related to how view components are handled. If this was broken/changed at some point, it would've been done in an upstream change in Laravel or it could possibly be related to roots/sage#3167