applicant-site/database/seeders/DocumentSeeder.php

<?php

namespace Database\Seeders;

use Illuminate\Database\Seeder;
use Illuminate\Support\Facades\DB;

class DocumentSeeder extends Seeder
{
    /**
     * Run the database seeds.
     */
    public function run(): void
    {
        DB::table('documents')->insert([
            [
                'name' => 'файл 1',
                'file_name' => 'file1',
                'description' => 'description1',
                'url' => 'url/url1',
                'position' => 2,
                'admission_id' => 1,
                'created_at' => now(),
            ],
            [
                'name' => 'файл 2',
                'description' => 'description2',
                'file_name' => 'file2',
                'url' => 'url/url2',
                'position' => 3,
                'admission_id' => 1,
                'created_at' => now(),
            ],
            [
                'name' => 'файл 3',
                'file_name' => 'file3',
                'description' => 'description3',
                'url' => 'url/url3',
                'admission_id' => 1,
                'position' => 1,
                'created_at' => now(),
            ]
        ]);
    }
}