https://readouble.com/laravel/5.8/ja/validation.html

下記のValidatorの雛形があったとする

app/Validators/Member/ServiceValidator.php

<?php

namespace App\Validators\Member;

use Illuminate\Validation\Factory as Validator;

/**
 * Class CreateUpdateValidator.
 *
 * @package namespace App\Validators\Member;
 */
class ServiceValidator
{
    const SECTION_ID_RULE = "member_section_id_validation:%s";

    protected $rules = [
        'member_id' => 'required|member_id_and_module:member',
    ];
    protected $additional_rules = [
        "update" => [
            'member.*' => ['is_fill_langmember:section_id'],
            'member.*.*.enable' => ['required', 'boolean'],
        ],
        "common_update" => [
            'member.layout' => ['required', 'array'],
            'member.layout.*' => ['is_fill_langmember:section_id'],
            'member.setting' => ['is_fill_langmember:section_id'],
            'member.setting.*.favorite' => ['boolean'],
        ],
        "section" => [
            "section_id" => ['required']
        ],
        "movie" => [
            'file' => ['required', 'max:2097152', 'mimetypes:video/mp4'],
        ],
    ];

    public function __construct(Validator $v)
    {
        $this->v = $v;
    }

    public function commonValidate(array $data)
    {
        return $this->validate($data);
    }

    public function updateValidate(array $data)
    {
        if (!is_null($data["section_id"])) {
            $this->additional_rules["update"] = array_merge($this->additional_rules["update"], $this->additional_rules["section"]);
        }

        return $this->validate($data, "update");
    }

    public function commonUpdateValidate(array $data)
    {
        return $this->validate($data, "common_update");
    }

    public function movieValidate(array $data)
    {
        return $this->validate($data, "movie");
    }

    protected function validate(array $data, string $additional_rule = null)
    {
        $rules = !is_null($additional_rule) && isset($this->additional_rules[$additional_rule]) ?
            array_merge($this->rules, $this->additional_rules[$additional_rule]) : $this->rules;
        $this->validator = $this->v->make($data, $rules);
        return $this->validator->validate();
    }
}

updateValidate()を拡張する

• 更新データの配列がユニークであることを判定するルールを追加してみる

app/Validators/Member/UniqueKeyValidator.php

<?php

namespace App\Validators\Member;

use Illuminate\Http\Request;

/**
 * Class UniqueKeyValidator
 *
 * @package namespace App\Validators\Member;
 */
class UniqueKeyValidator
{
    public function __construct(
        Request $request
    ) {
        $this->request = $request;
    }

    /**
     * keyがユニークであることをチェックする
     */
    public function validate($attribute, $value, $parameters, $validator)
    {
        $keys = [];
        $unique_keys = [];

        if (!is_array($value)) {
            return false;
        }
        foreach ($value as $item) {
            $keys[] = $item['key'];
        }
        $unique_keys = array_unique($keys);

        // 元の配列とユニークにした配列で比較する
        if ($keys != $unique_keys) {
            return false;
        }
        return true;
    }
}

適用

<?php

namespace App\Validators\Member;

use Illuminate\Validation\Factory as Validator;

/**
 * Class CreateUpdateValidator.
 *
 * @package namespace App\Validators\Member;
 */
class ServiceValidator
{
+   // メンバー詳細のレイアウトのkeyがユニークであるかをチェック
+   const UNIQUE_KEY_RULE = 'unique_key_validation';

    protected $rules = [
        'member_id' => 'required|member_id_and_module:member',
    ];
・・・

    public function updateValidate(array $data)
    {
        if (!is_null($data["section_id"])) {
            $this->additional_rules["update"] = array_merge($this->additional_rules["update"], $this->additional_rules["movie"]);
        }
+       $this->additional_rules["update"] = array_merge($this->additional_rules["update"], self::UNIQUE_KEY_RULE);
        return $this->validate($data, "update");
    }
・・・

クラスを認識させる

app/Http/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

・・・

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Validator;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
・・・
        // メンバー詳細レイアウトのkeyがユニークであることをチェック
        Validator::extend(
            'unique_key_validation',
            '\App\Validators\Member\UniqueKeyValidator@validate'
        );
・・・
    }

読み込ませる

laravel > php artisan composer dumpa

利用イメージ

MemberController

<?php
namespace App\Http\Controllers\Member;

use App\Http\Controllers\Controller;
use App\Services\MeberService;
use Illuminate\Http\Request;

class MemberController extends Controller
{

    public function __construct(
        MemberService $service
    ) {
        $this->service = $service;
    }

・・・

    public function update(Request $request)
    {
        $content_json = json_decode($request->getContent(), true);
        $this->service->updateValidate($content_json["data"], $section_id);
        $this->service->updateContent("member", $content_json["data"], $section_id);

        return response(null, 204);
    }

MemberService

<?php

namespace App\Services\Member;

・・・

use App\Validators\Member\ServiceValidator;


class MemberrService extends SectionAbstractService implements
    MemberDesignServiceInterface,
    PlayAbleInterface
{
・・・
    public function __construct(
        ServiceValidator $validator
    ) {
        $this->validator = $validator;
    }

・・・

    public function updateValidate($content_data, $section_id = null)
    {
        $this->validator->updateValidate([
            "update" => $content_data
        ]);
    }
・・・