Roman_applicant-site/app/Http/Requests/Catalog/UpdateDepartmentRequest.php

<?php

namespace App\Http\Requests\Catalog;

use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Foundation\Http\FormRequest;

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

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, ValidationRule|array<mixed>|string>
     */
    public function rules(): array
    {
        return [
            'position' => 'int|max:255',
            'description' => 'string',
            'faculty_id' => 'int|required',
            'name' => [
                'required',
                'string',
                'max:255',
                "unique:educational_institutions,name,{$this->department->id}",
            ],
        ];
    }
}