총 업로드 파일 크기에 대한 맞춤형 Laravel 유효성 검사 규칙 생성 🚫✅

1- 입력:

    <form action="images/upload" method="POST">
        <input
            type="file"
            id="thumbnail"
            name="thumbnail"
            class="h-full w-full z-50 opacity-0 cursor-pointer"
            accept="image/png, image/jpeg, image/jpg, image/gif, image/webp"
            multiple
            required
        />
    </form>

2- 경로:

Route::post('images/upload', [ImageUploadController::class, 'store'])->name('images.upload');

3- 검증:

    public function rules()
    {
        return [

            'images' => ['bail', 'required'],
            'images.*' => ['bail', 'image', 'mimes:jpeg,jpg,png,gif,webp']
        ];
    }

A rule object contains a single method: __invoke. This method receives the attribute name, its value, and a callback that should be invoked on failure with the validation error message.

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\InvokableRule;

class Maxsize implements InvokableRule
{
    /**
     * Run the validation rule.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @param  \Closure  $fail
     * @return void
     */
    public function __invoke($attribute, $value, $fail)
    {
        // Logic goes here
    }
}

array_reduce — Iteratively reduce the array to a single value using a callback function

    public function __invoke($attribute, $value, $fail)
    {
        $total_size = array_reduce($value, function ($sum, $item) {
            // each item is UploadedFile Object
            $sum += filesize($item->path());
            return $sum;
        });

        if ($total_size > 10000 * 1000) {
            $fail('Total images size should be maximum 10 Megabytes');
        }
    }

<?php

namespace App\Http\Requests;

use App\Rules\Maxsize;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class StoreImagesRequest extends FormRequest
{
    /**
     * 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<string, mixed>
     */
    public function rules()
    {
        return [

            'images' => ['bail', 'required', new Maxsize],
            'images.*' => ['bail', 'image', 'mimes:jpeg,jpg,png,gif,webp']
        ];
    }
}