sam-manage/app/Http/Requests/Auth/LoginRequest.php

<?php

namespace App\Http\Requests\Auth;

use Illuminate\Foundation\Http\FormRequest;

class LoginRequest 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, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
     */
    public function rules(): array
    {
        return [
            'email' => ['required', 'email', 'max:255'],
            'password' => ['required', 'string', 'min:8'],
            'remember' => ['nullable', 'boolean'],
        ];
    }

    /**
     * Get custom messages for validator errors.
     */
    public function messages(): array
    {
        return [
            'email.required' => '이메일을 입력해주세요.',
            'email.email' => '올바른 이메일 형식을 입력해주세요.',
            'password.required' => '비밀번호를 입력해주세요.',
            'password.min' => '비밀번호는 최소 8자 이상이어야 합니다.',
        ];
    }

    /**
     * Get custom attributes for validator errors.
     */
    public function attributes(): array
    {
        return [
            'email' => '이메일',
            'password' => '비밀번호',
        ];
    }
}