Exporting CSV Reports with Renderless Livewire Component

ExportReportsLiveiwre.php

<?php

namespace App\Http\Livewire;

use Livewire\Component;
use Livewire\Attributes\Renderless;
use App\Traits\HasFilteredReports;

class Reports extends Component
{
    use HasFilteredReports;

    #[Renderless]
    public function exportCsv()
    {
        // liveiwre 2 (works with livewire 3 too)
        // $this->skipRender();
        return response()->stream(function () {

            // Open a writable stream to php://output (the browser)
            $file = fopen('php://output', 'w');

            // Write the header row to the CSV
            fputcsv($file, $this->selectedColumns);

            $this->getFilteredReports()->each(function ($row) use ($file) {
                // Parse the row data and write it to the CSV
                fputcsv($file, $row->toArray());
            });

            // Close the CSV file
            fclose($file);
        }, 200, [
            "Content-type" => "text/csv",
            "Content-Disposition" => "attachment; filename=reports.csv",
            "Pragma" => "no-cache",
            "Cache-Control" => "must-revalidate, post-check=0, pre-check=0",
            "Expires" => "0"
        ]);
    }

    public function render()
    {
        // some database operations which needed to render the component
        // operations happening here will not be executed if you call nonRenderingMethod() 

        return view('livewire.reports',[
            'reports'=> $this->getFilteredReports(),
            // other variables
        ]);
    }
}