math_cms/database/factories/TeacherFactory.php

<?php

namespace Database\Factories;

use App\Models\Teacher;
use Illuminate\Database\Eloquent\Factories\Factory;

class TeacherFactory extends Factory
{
    protected $model = Teacher::class;

    public function definition(): array
    {
        return [
            'teacher_id' => $this->faker->unique()->numberBetween(1000, 9999),
            'user_id' => null,
            'name' => $this->faker->name(),
            'subject' => $this->faker->randomElement(['数学', '语文', '英语']),
        ];
    }
}