Laravel FormRequest Validation for Rest API 获取带有 2 个查询 json 参数的调用无法正常工作

这里存在许多问题：

• 在 中，您有一个 try/catch 块，它对捕获的异常不执行任何操作。与您的评论所建议的相反，它不会作为验证错误返回，因为您正在捕获它。即使它没有被捕获，我不确定它是否会在客户端显示为 422 错误。prepareForValidation()
• json_decode()默认情况下不会抛出错误，因此您的 try/catch 语句无论如何都没有什么可以使用的！
• json_decode()默认情况下，还可以解码为对象;如果没有数组，后续验证规则将无法运行。
• 对于在查询字符串中发送的数据，您有一个验证规则。表单请求验证仅适用于邮件正文，而不适用于查询字符串。您想要验证的任何内容都需要手动合并。

这是我会尝试的：

<?php

namespace App\Http\Requests;

use Illuminate\Validation\ValidationException;
use Throwable;

class RecipeFindRequest extends FormRequest
{

    protected function prepareForValidation(): void
    {
        try {
            if ($this->query->has('sorters')) {
                $sorters = json_decode($this->query->get('sorters'), associative: true, flags: \JSON_THROW_ON_ERROR);
            }

            if ($this->query->has('filters')) {
                $filters = json_decode($this->query->get('filters'), associative: true, flags: \JSON_THROW_ON_ERROR);
            }

            $this->merge([
                // user cannot easily change the headers of a request
                // so you should set a sensible default for this value
                'language' => $this->headers->get('language', 'en'),
                'page' => $this->query->get('page'),
                'per_page' => $this->query->get('per_page'),
                'sorters_decoded' => $sorters ?? null,
                'filters_decoded' => $filters ?? null,

            ]);
        } catch(Throwable $e) {
            if (isset($sorters)) {
                // if this is set, the error was with the second decode
                $messages = ['filters' => 'An invalid filter value was passed'];
            } else {
                $messages = ['sorters' => 'An invalid sort value was passed'];
            }
            throw ValidationException::withMessages($messages);
        }
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, mixed>
     */
    public function rules(): array
    {
        return [
            'sorters_decoded' => ['required', 'array'],
            'sorters_decoded.*.name' => ['required', 'string', Rule::in(['likes', 'ratings', 'calories', 'carbs', 'protein', 'fat', 'created'])],
            'sorters_decoded.*.direction' => ['required', 'string', Rule::in(['asc', 'desc'])],
            'sorters_decoded.*.order' => ['required', 'integer'],
            'filters_decoded.duration_high' => ['integer', 'min:0'],
            'filters_decoded.duration_low' => ['integer', 'min:0'],
            'filters_decoded.title' => ['string'],
            'filters_decoded.difficulty' => ['array'],
            'filters_decoded.difficulty.*' => ['string', 'exists:difficulties,id'],
            'filters_decoded.ingredients' => ['array'],
            'filters_decoded.ingredients.*.id' => ['string', 'exists:ingredients,id'],
            'filters_decoded.ingredients.*.relation' => ['string', Rule::in(['include', 'exclude'])],
            'filters_decoded.liked_by_me' => ['boolean'],
            'filters_decoded.cookbooks' => ['array'],
            'filters_decoded.cookbooks.*' => ['string', 'exists:cookbooks,id'],
            'filters_decoded.nutritions' => ['array'],
            'filters_decoded.nutritions.*.category_id' => ['string', 'exists:nutrition_categories,id'],
            'filters_decoded.nutritions.*.nutrition_high' => ['numeric', 'min:0'],
            'filters_decoded.nutritions.*.nutrition_low' => ['numeric', 'min:0'],
            'language' => ['string', 'size:2', 'exists:i18n_languages,short'],
            'page' => ['integer', 'min:1'],
            'per_page' => ['integer', 'min:1'],
        ];
    }
}

这些 URL 的大小必须很大;这是 POST 请求最适合使用的那种事情。（但这不是一个硬性规定，只是我的意见。