laravel-5 - Laravel 多态数据库 Seeder Factory

Question

如何为以下配置创建数据库播种器工厂？

用户

// create_users_table.php
Schema::create('users', function (Blueprint $table) {
    $table->increments('id');
    ...
}

// User.php
public function notes()
{
    return $this->morphMany('App\Note', 'noteable');
}

复杂

// create_complex_table.php
Schema::create('complex', function (Blueprint $table) {
    $table->increments('id');
    ...
}

// Complex.php
public function notes()
{
    return $this->morphMany('App\Note', 'noteable');
}

注释

// create_notes_table.php
Schema::create('notes', function (Blueprint $table) {
    $table->increments('id');
    $table->integer('noteable_id');
    $table->string('noteable_type');
    ...
}

// Note.php
public function noteable()
{
    return $this->morphTo();
}

我正在努力寻找最可靠的方法来确保我不只是填充可能不存在的随机 id。

Answer 1

我改进了 HyperionX 的答案并从中删除了静态元素。

$factory->define(App\Note::class, function (Faker $faker) {
    $noteable = [
        App\User::class,
        App\Complex::class,
    ]; // Add new noteables here as we make them
    $noteableType = $faker->randomElement($noteables);
    $noteable = factory($noteableType)->create();

    return [
        'noteable_type' => $noteableType,
        'noteable_id' => $noteable->id,
        ...
    ];
});

基本上，我们随机选择一个值得注意的类，然后调用它自己的工厂来获取值得注意的实例，从而摆脱OP答案的静态性。