# Eloquent Advanced (Laravel)

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

- 24 pertanyaan wawancara
- Senior
- [Pertanyaan Wawancara: Laravel](https://sharpskill.dev/id/technologies/laravel/pertanyaan-wawancara.md)

## 1. Apa itu local scope di Eloquent?

**Jawaban**

Local scopes memungkinkan pendefinisian constraint query yang dapat digunakan kembali di dalam model. Mereka dideklarasikan dengan prefix scope dan dipanggil tanpa prefix tersebut. Pendekatan ini meningkatkan keterbacaan kode dan mencegah duplikasi logika filtering di seluruh aplikasi.

## 2. Bagaimana cara mendefinisikan local scope bernama 'active' dalam model Eloquent?

**Jawaban**

Local scope didefinisikan dengan prefix scope diikuti nama dalam format PascalCase. Metode tersebut menerima objek query builder dan mengembalikan objek yang sama setelah dimodifikasi. Scope kemudian dipanggil tanpa prefix, dalam format camelCase, langsung pada query builder.

## 3. Apa itu global scope di Eloquent?

**Jawaban**

Global scope secara otomatis menerapkan constraint ke semua query pada sebuah model. Ia didaftarkan di metode boot model dan mengimplementasikan interface Scope. Fitur ini berguna untuk filter sistematis seperti soft delete atau multi-tenancy.

## 21 pertanyaan lagi tersedia

- Bagaimana cara menghapus sementara global scope dari sebuah query?
- Apa itu model observer di Laravel?

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