如何在laravel Validations中验证数组数据的唯一复合键

Question

请求数据

    {
        "exam_id": 10,
        "exam_scores": [
        {
          "student_id": 1,
          "subject_id": 1,
          "marks": 50,
        },
        {
          "student_id": 1,
          "subject_id": 2,
          "marks": 70,
        },
        {
          "student_id": 1,
          "subject_id": 3,
          "marks": 80,
        }
        ],

    }

其中 student_id 和 subject_id 是唯一的复合键，如何使用接受数据数组的规则方法为复合键制作验证器 () 我试过，但它没有按预期工作。

$validator = Validator::make(request()->all(), [
    "exam_id"=> "required|integer",
    "exam_scores"=> "required|array",
    'exam_scores.*.student_id' => [
        Rule::unique('results')->where(function ($query) {
            return $query
                ->whereStudent_idAndSubject_id(request()->get('exam_scores.*.student_id'),request()->get('exam_scores.*.subject_id'))
        })
    ],
]);

以下请求不应验证数据。 但它验证成功。

{
        "exam_id": 10,
        "exam_scores": [
        {
          "student_id": 1,
          "subject_id": 1,
          "marks": 50,
        },
        {
          "student_id": 1,
          "subject_id": 1,
          "marks": 70,
        }
       ],

    }

下面的请求成功验证了预期的 exam_scores 单个对象的数据。

    {
        "exam_id": 10,
        "exam_scores": {
            "student_id": 1,
            "subject_id": 1,
            "marks": 50,
        }
    }

$validator = Validator::make(request()->all(), [
    "exam_id"=> "required|integer",
    "exam_scores"=> "required|array",
    'exam_scores.student_id' => [
    Rule::unique('results')->where(function ($query) {
        return $query
            ->whereStudent_idAndSubject_id(request()->get('exam_scores.student_id'),request()->get('exam_scores.subject_id'))
    })
],
]);

Answer 1

在搜索了大量博客、教程和当然 Laravel 文档后，我得到了解决我的问题的东西，这里是博客链接。 这不是我真正想要的，但它清除了我必须做什么的概念。 这个人拯救了我的一天。

验证动态请求值

这是一个例子。

namespace App\Http\Requests;    
use App\Http\Requests\Request;

class OrderRequest extends Request
{

    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        $rules = [
            'name' => 'required|max:255',
        ];

        foreach ($this->request->get('items') as $key => $val) {
            $rules['items.' . $key] = 'required|max:10';
        }

        return $rules;
    }

    public function messages()
    {
        $messages = [];
        foreach ($this->request->get('items') as $key => $val) {
            $messages['items.' . $key . '.max'] = 'The field labeled "Book Title ' . $key . '" must be less than :max characters.';
        }
        return $messages;
    }

}

解决方案非常简单和容易。