baoshi-was/database/seeds/CitiesSeeder.php

<?php

use Illuminate\Database\Seeder;

class CitiesSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        \App\City::create([
            'province_id'=>1,
            'name'=>'廊坊'
        ]);


    }
}