How capable and flexible is Filament?

Filament is a powerful tool for building admin panels in Laravel applications, and it can be quite flexible with some customizations. Let's address your scenarios:

1. PDF Viewing and Form Filling:

   Filament can handle this scenario by leveraging custom pages and components. You can create a custom page in Filament where you use a JavaScript library to display the PDF on one side and a form on the other. Here's a basic outline of how you might achieve this:

   • Create a Custom Page: Use Filament's custom page feature to create a new page.
   • PDF Display: Use a JavaScript library like pdf.js to render the PDF in a <div> on the left side of the page.
   • Form: Use Filament's form components on the right side of the page.

   Here's a rough example of how you might set up the page:

   // In your Filament page class
   public function render()
   {
       return view('filament.pages.custom-pdf-form', [
           'pdfUrl' => $this->getPdfUrl(), // Method to get the PDF URL
       ]);
   }
   

   <!-- In your Blade view (resources/views/filament/pages/custom-pdf-form.blade.php) -->
   <div style="display: flex;">
       <div style="flex: 1;">
           <!-- PDF.js viewer -->
           <div id="pdf-viewer"></div>
       </div>
       <div style="flex: 1;">
           <!-- Filament form -->
           <form>
               <!-- Your form fields here -->
           </form>
       </div>
   </div>
   
   <script>
       // Use PDF.js to render the PDF
       const url = "{{ $pdfUrl }}";
       // Initialize PDF.js and render the PDF in the #pdf-viewer div
   </script>
   

2. Polling for Pending Workflows:

   For the polling feature, you can use JavaScript to periodically fetch data from the server and update the UI. Filament doesn't have built-in polling, but you can easily implement it with a bit of JavaScript.

   • JavaScript Polling: Use setInterval to fetch data every 5-10 seconds.
   • Stop Polling: Check the response to determine if all workflows are completed and stop polling if they are.

   Here's a simple example:

   function fetchPendingWorkflows() {
       fetch('/api/pending-workflows')
           .then(response => response.json())
           .then(data => {
               // Update your UI with the data
               if (data.allCompleted) {
                   clearInterval(pollingInterval);
               }
           });
   }
   
   const pollingInterval = setInterval(fetchPendingWorkflows, 5000);
   

   • Backend Endpoint: Create an API endpoint in Laravel to return the pending workflows.

   Route::get('/api/pending-workflows', function () {
       $workflows = Workflow::where('status', 'pending')->get();
       return response()->json([
           'workflows' => $workflows,
           'allCompleted' => $workflows->isEmpty(),
       ]);
   });
   

By combining Filament's capabilities with some custom JavaScript and Blade templates, you can achieve the flexibility you need for these scenarios.