SOLID in Laravel.

SOLID in short 1/ S (Single Responsibility Principle) A class should have only one job. Keep controllers and models thin. Move logic to services or traits. 2/ O (Open/Closed Principle) Extend behavior without modifying existing code Use interfaces or abstract classes. Avoid editing core logic for new features. 3/ L (Liskov Substitution Principle) Subclasses must work like their parent class. Methods should keep expected behavior. Avoid overriding with incompatible logic. 4/ I (Interface Segregation Principle) Interfaces should be small and specific. No class should depend on unused methods. Split large interfaces into smaller ones. 5/ D (Dependency Inversion Principle) Depend on interfaces, not concrete classes. Use Laravel’s Service Container for injection. use Laravel’s Service Container Common Laravel Mistakes That Violate SOLID Fat controllers violating SRP. Too much logic in Models Direct Database Queries in Controllers (Violates SRP & DIP) Not using contracts/interfaces, leading to tight coupling (DIP). Laravel Tools & Features That Support SOLID Service Providers & Dependency Injection (DIP). Custom Requests Repositories & Interfaces (OCP, LSP). Middleware for separating concerns (SRP). Policies & Gates for clean authorization logic (SRP).

May 7, 2025 - 08:51

SOLID in short

1/ S

(Single Responsibility Principle)

2/ O

(Open/Closed Principle)

3/ L

(Liskov Substitution Principle)

4/ I

(Interface Segregation Principle)

5/ D

(Dependency Inversion Principle)

Depend on interfaces, not concrete classes.
Use Laravel’s Service Container for injection.
- use Laravel’s Service Container

Common Laravel Mistakes That Violate SOLID

Laravel Tools & Features That Support SOLID