无法在同一模型上创建一对多关系

Question

我想在我的网站上创建sponsors用户。我使用与关系相同的模型。

User.php (型号)：

public function sponsor(): HasMany
{
    return $this->hasMany(self::class, 'sponsored_id', 'sponsor_id');
}

public function sponsored(): BelongsTo
{
    return $this->BelongsTo(self::class, 'sponsor_id', 'sponsored_id');
}

赞助商行：

Schema::table('users', function (Blueprint $table) {
    $table->foreignId('sponsor_id')->nullable();
    $table->foreignId('sponsored_id')->nullable();
});

我的UserSeeder：

$sponsor = User::factory()->create(['name' => 'sponsor']);

$sponsor->sponsor()->save(
    User::factory()->make()
);

Answer 1

根据您的评论，您正在尝试从sponser检索一条记录，因此它应该是

$sponsor->sponsor()->first()