baoshi-was/database/seeds/OrderPackageReceivedSyncRecordSeeder.php

<?php

use Illuminate\Database\Seeder;

class OrderPackageReceivedSyncRecordSeeder extends Seeder
{
    /**
     * Run the database seeds.
     * @return void
     */
    public function run()
    {
        $logistic_names = ['中通', '顺丰', '韵达', '圆通', '其他'];
        $recorded_ats = now()->subMonth()->daysUntil(now());
        foreach ($recorded_ats as $recorded_at) {
            foreach ($logistic_names as $logistic_name) {
                factory(\App\OrderPackageReceivedSyncRecord::class)->create([
                    'recorded_at' => $recorded_at->toDateString(),
                    'logistic_name' => $logistic_name,
                ]);
            }
        }
    }
}