Answers for "laravel 8 save date time"

laravel created_at where date format

$topshiriqnoma = $connection->table('topshiriqnoma')->select('created_at')->whereBetween('created_at',
    [
        Carbon::createFromFormat('Y-m-d', $start_time)->startOfDay()->toDateTimeString(),
        Carbon::createFromFormat('Y-m-d', $end_time)->endOfDay()->toDateTimeString()
    ]
)->orderBy('created_at', 'ASC')->get()->groupBy(function ($query) {
    return Carbon::parse($query->created_at)->format('Y-m-d');
});

laravel 8 date format

// in model 
protected $casts = [
        'date_of_approval' => 'date:d-m-Y'
    ];

// if you want change format any where
$appointment->date_of_approval->format('Y-m-d');

// if you have not cast in model data format
Carbon\Carbon::parse($appointment->date_of_approval)->format('Y-m-d');