jandl-taskmanager-app/be/database/seeders/DatabaseSeeder.php

<?php

namespace Database\Seeders;

// use Illuminate\Database\Console\Seeds\WithoutModelEvents;
use App\Models\Client;
use App\Models\MasterTask;
use App\Models\Project;
use App\Models\Team;
use App\Models\Timeblock;
use App\Models\Timesheet;
use App\Models\User;
use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     *
     * @return void
     */
    public function run()
    {
        Client::factory()
               ->count(20)
               ->create();

        Project::factory()
            ->hasClient()
            ->count(20)
            ->create();

        for ($i=0; $i < 5; $i++) {
            Team::factory()
                ->hasUsers(random_int(2, 5))
                ->create();
        }

        for ($i=0; $i < 30; $i++) {
            MasterTask::factory()
                   ->hasAttachments(random_int(0, 3))
                   ->hasSubTasks(random_int(3, 5))
                   ->create();
        }

        for ($i=0; $i < 30; $i++) {
            Timeblock::factory()
                     ->count(random_int(1, 2))
                     ->create();
        }

        for ($i=0; $i < 30; $i++) {
            Timesheet::factory()
                     ->count(random_int(1, 2))
                     ->create();
        }
    }
}