php - 传递给 HasOneOrMany::save() 的 Laravel 参数 1 必须是给定的模型数组的实例

Question

我是 Laravel 的新手，当我尝试将数据数组保存到数据库时遇到问题。这是我得到的错误

Argument 1 passed to Illuminate\Database\Eloquent\Relations\HasOneOrMany::save() must be an instance of Illuminate\Database\Eloquent\Model, array given, called in S:\Documents\samdyk\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Relations\HasOneOrMany.php on line 267 and defined

这是我的代码

class Skill extends Model
{
    protected $fillable = ['skill_title', 'knowledge_level'];
}

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    public function skills() {
        return $this->hasMany(Skill::class);
    }
}

这里是 Controller 函数

public function editMyProfile(Request $request) {
        $user = Auth::user();

        dump($request->get('skills'));
       // dump($request->get('skills')[0]);
        dump($user->skills()->saveMany($request->get('skills')));
       return 1;
}

所以这是$request->get('skills')数据

array:5 [
  0 => array:2 [
    "skill_title" => "fghjghj"
    "knowledge_level" => "20"
  ]
  1 => array:2 [
    "skill_title" => "gjghjhgj"
    "knowledge_level" => "50"
  ]
  2 => array:2 [
    "skill_title" => "ghjhgjgfjh"
    "knowledge_level" => "80"
  ]
  3 => array:2 [
    "skill_title" => "hjkhgkkkhgjkjhkhjgk"
    "knowledge_level" => "53"
  ]
  4 => array:2 [
    "skill_title" => "jghjhgjhgj"
    "knowledge_level" => "57"
  ]
]

如您所见，我尝试保存一个数组(这很明显)。然而，即使在 laravel 文档中我也看到了这个$post = App\Post::find(1);

$post->comments()->saveMany([
    new App\Comment(['message' => 'A new comment.']),
    new App\Comment(['message' => 'Another comment.']),
]);

那么为什么我的代码是错误的呢？

Answer 1

您需要将一组 Skill 对象传递给 saveMany() 方法:

$skillModels = [];
foreach ($request->skills as $skill) {
    $skillsModels[] = new Skill($skill);
}

$user->skills()->saveMany($skillModels);

并且您正在传递一个简单的数组。