# Eloquent Advanced (Laravel)

> Query scopes, local scopes, global scopes, observers, events, collections 메서드, custom casts, attribute casting

- 24 면접 질문
- Senior
- [면접 질문: Laravel](https://sharpskill.dev/ko/technologies/laravel/interview-questions.md)

## 1. Eloquent에서 local scope란 무엇입니까?

**답변**

local scope를 사용하면 model 안에서 재사용 가능한 쿼리 제약 조건을 정의할 수 있습니다. scope 접두사를 붙여 선언하고 접두사 없이 호출합니다. 이 접근 방식은 코드 가독성을 높이고 애플리케이션 전반에서 필터링 로직이 중복되는 것을 방지합니다.

## 2. Eloquent model에서 'active'라는 이름의 local scope를 어떻게 정의합니까?

**답변**

local scope는 scope 접두사 뒤에 PascalCase 이름을 붙여 정의합니다. 메서드는 query builder 객체를 받아 수정된 같은 객체를 반환합니다. 그런 다음 scope는 접두사 없이 camelCase로 query builder에서 직접 호출합니다.

## 3. Eloquent에서 global scope란 무엇입니까?

**답변**

global scope는 model의 모든 쿼리에 제약 조건을 자동으로 적용합니다. model의 boot 메서드에서 등록하고 Scope 인터페이스를 구현합니다. 이 기능은 soft delete나 multi-tenancy 같은 체계적인 필터에 유용합니다.

## 21개 추가 질문 이용 가능

- 쿼리에서 global scope를 일시적으로 제거하려면 어떻게 합니까?
- Laravel에서 model observer란 무엇입니까?

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