How can i deploy pagination after foreach loop in laravel - php

Question

I'm trying to create a pagination in my search result. I have one queries in my repository like:
public function getFilteredVehicles($id,$pax,$categories,$search_type,$from_date,$to_date)
{
$vehicles = Vehicle::whereHas('destinations', function($q) use($id){
$q->where('destination_id',$id)
->where('active',1);
})
->paginate(1);
if($search_type == 'disposal' || $search_type == 'pnd')
{
$vehicles = $vehicles->where('registered_location',$id);
}
if($categories)
{
$vehicles = $vehicles->where('vehicle_categoryid',$categories);
}
return $vehicles;
}
The returned result again needs to be processed via loop like:
public function calculateLocationAmount($vehicles,$fdate,$tdate,$destination_id)
{
$datetime1 = new DateTime($fdate);
$datetime2 = new DateTime($tdate);
$interval = $datetime1->diff($datetime2);
$days = $interval->format('%a');
$days = $days+1;
$nights = $days-1;
foreach ($vehicles as $key => $vehicle) {
# code...
$perday_rate = $vehicle->destinations->where('id',$destination_id)->first()->pivot->day_rate;
$pernight_rate = $vehicle->destinations->where('id',$destination_id)->first()->pivot->night_rate;
$day_rate = $perday_rate * $days;
$night_rate = $pernight_rate * $nights;
$total_amount = $day_rate + $night_rate;
$vehicle['total_amount'] = $total_amount;
$vehicle['availability'] = 'true';
if($vehicle->whereHas('unavailability', function($q) use($fdate,$tdate){
$q->whereRaw("? BETWEEN `from_date` AND `to_date`", [$fdate])
->orwhereRaw("? BETWEEN `from_date` AND `to_date`", [$tdate]);
})->count()>0){
$vehicle['availability'] = 'false';
}
}
return $vehicles;
}
This final result needs to be paginated. How can i do it?
Using foreach is changing the value to collection due to which links is not working. If i don't do paginate() or get(), for loop is not executed.
Kindly help.

Answer 1

You can paginate your initial query just as you have, then loop over the pagination object as if it was your regular collection or use $pagination->items()
You should also use nested with('relation') in your initial query to stop N+1 queries https://laravel.com/docs/8.x/eloquent-relationships#constraining-eager-loads