How to pass multiple arrays/objects into DOMPDF?

@Sinnbeck

Too few arguments to function

@jake214 Show the full error please. And the complete controller method

@Sinnbeck

ArgumentCountError

Too few arguments to function App\Http\Controllers\AppointmentController::downloadPdf(), 0 passed in C:\xampp\htdocs\Appointment_Form\vendor\laravel\framework\src\Illuminate\Routing\Controller.php on line 54 and exactly 1 expected

@jake214 Show downloadPdf(), and how you are calling that route

@jake214 So you are expecting a date.

<form action="{{ route('view-pdf') }}" method="POST" target="__blank">
    @csrf
    <input type="hidden" name="date"  value="{{now()->toDateString()}}" />
    <button type="submit" style="float: right">Export</button>
</form>

and fix the method

public function downloadPdf(Request $request){
    $selectedDate = $request->input('date'); //get it from the form
    $dates = usersappointments::query()
    ->when($selectedDate, function ($query, $selectedDate) {
        $query->where('date', $selectedDate);
    })
    ->get()
    ->groupBy('date');

    $pdf = PDF::loadView('Appointments.usersAppointmentsGroup', ['dates' => $dates]);

    return $pdf->download('users-details.pdf');
}