ldc-qrcollector-back/app/Http/Requests/Bo/Urls/UpdateUrlRequest.php

<?php

namespace App\Http\Requests\Bo\Urls;

use Illuminate\Validation\Rule;

class UpdateUrlRequest extends StoreUrlRequest
{
    /**
     * Prepare the data for validation.
     * @return void
     */
    protected function prepareForValidation(): void
    {
        $this->merge([
            'key' => $this->url->key,
        ]);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        $rules = [
            'key' => [
                'required',
                'string',
                'max:45',
                Rule::unique('urls', 'key')->ignore($this->url->id)
            ],
        ];

        return \array_merge(
            parent::rules(),
            $rules,
        );
    }
}