GroupBy from relations using laravel eloquent - laravel

Question

I have TypeOfVehicle model that has many Vehicle.
How can I group all vehicles by type of vehicle name with counts to get something like this
[
'Sedan' => 10,
'SUV' => 25,
'Crossover' => 5
]

Answer 1

I assume you have eloquent relation type in Vehicle model, e.g.:
public function type()
{
return $this->belongsTo('\App\TypeOfVehicle');
}
So, you can get you data this way:
$result = Vehicle::select('vehicle_type_id', DB::raw('count(vehicle_type_id) as cnt'))
->with('type') // with your type relation
->groupBy('vehicle_type_id') // group by type of vehicle
->get() // get collection from database
->pluck('cnt', 'type.name') // get only needful data
->toArray(); // cast to array if necessary

Answer 2

You can use
$counts = DB::table('tablename')
->select('TypeOfVehicle', DB::raw('count(*) as total'))
->groupBy('TypeOfVehicle')
->get();

Answer 3

Counting Related Models
If you want to count the number of results from a relationship without actually loading them you may use the withCount method, which will place a {relation}_count column on your resulting models.
$typeOfVehicles = App\TypeOfVehicle::withCount('vehicles')->get();
foreach ($typeOfVehicles as $typeOfVehicle) {
echo $typeOfVehicle->vehicles_count;
}

Answer 4

Try this it gives you your solution
$vehicle=Vehicle::all();
$grouped = $vehicle->groupBy(function ($item, $key) {
return substr($item['that_coloumn_name_like_type'], 0);
});
$groupCount = $grouped->map(function ($item, $key) {
return collect($item)->count();
});
//dd($groupCount); to check it work correctly