insert data if not exist in the column using Laravel elequant - eloquent

Question

I'm developing a doctor's appointment laravel project. the condition is if a user fixes an appointment they can't able to fix the appointment for the same doctor at the same date and time. I tried with firstOrCreate method but doesn't match my condition. here are my conditions
1.if doctors_id AND date AND time already exist then shouldn't insert the data
2.if doctors_id OR date OR time, any three of this already exist then can insert the data
3.if all fields already not exist then insert data
here are the code snippets
In view
<div class="card-body">
<form action="appointment" method="post">
{{ #csrf_field() }}
<select name="doctors" id="" class="form-control">
#foreach ($docList as $item)
<option value="{{$item->id}}">{{$item->name}}</option>
#endforeach
</select><br><br>
<input type="date" name="date" id="" class="form-control">
<br><br>
<select name="time" class="form-control">
<option value="9-10AM">9-10AM</option>
<option value="10-11AM">10-11AM</option>
<option value="1-2PM">1-2PM</option>
<option value="2-3PM">2-3PM</option>
<option value="3-4PM">3-4PM</option>
</select>
<button type="submit" class="btn btn-primary">Fix Appointment</button>
</form>
</div>
In controller
public function store(Request $request)
{
$uId = Auth::id();
$fixAppointment = Appointment::firstOrNew(['doctors_id'=>$request->doctors,'date'=>request('date')],['time'=>request('time')]);
$fixAppointment->users_id = $uId;
$fixAppointment->save();
}

Answer 1

Here I sorted out the issue by using where condition
In controller
$appointment = Appointment::where('date', '=', request('date'))->where('time','=',request('time'))->where('doctors_id','=',request('doctors'))->first();
if ($appointment === null)
{
$fixAppointment = New Appointment;
$fixAppointment->doctors_id = $request->doctors;
$fixAppointment->users_id = $uId;
$fixAppointment->date = $request->date;
$fixAppointment->time=$request->time;
$fixAppointment->save();
}
here is the link which I referred to find this solution.