Final Report: Code Review, Optimization & Documentation

1. Introduction

This report summarizes the process of refactoring, optimizing, and documenting the Laravel project located at:

• Local Path: C:\xampp\htdocs\internship-project
• Database: intern_db
• GitHub Repository: laravel-admin-panel

Objectives:

• Review project structure and code quality.
• Implement any final optimizations (query optimization, caching).
• Complete documentation and push final code to GitHub.

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2. Execution

2.1 Identifying Code Duplication

Repetitive CRUD operations have been identified in the CategoryController.php and ProductController.php files.

To improve maintainability, these functionalities were moved into service classes.

• Before Refactoring (ProductController.php):

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2.2 Creating ProductService.php

A new service class, ProductService.php, was created in the app/Services/ directory.

ProductService.php Code:

namespace App\Services;

use App\Models\Product;
use App\Models\Category;

class ProductService
{
    public function getAllProducts($search = null)
    {
        $query = Product::with('category');
        if ($search) {
            $query->where('name', 'LIKE', "%$search%");
        }
        return $query->paginate(10);
    }
}

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2.3 Updating ProductController.php

The ProductController.php file was modified to use ProductService.php instead of directly interacting with models.

Before & After Refactoring (ProductController.php):

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2.4 Creating CategoryService.php to manage category-related operations.

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2.5 Updating CategoryController.php using CategoryService.php.

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3. Database Optimization

3.1. Query Performance Analysis (EXPLAIN in MySQL)

• Used EXPLAIN in MySQL to analyze slow queries and reviewed indexing.
• Confirmed that appropriate indexes were added for products and categories tables.

Screenshot : Results of EXPLAIN command for a sample query.

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3.2. Implementing Query Caching

• Implemented caching for frequently accessed product queries in ProductController.php.
• Used Cache::remember() to store the search results for 600 seconds (10 minutes).

Screenshot 7: Updated index() method in ProductController.php with caching

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4. Project Cleanup & Documentation

4.1. Removing Unused Routes, Controllers, and Views

• Reviewed routes/web.php and removed unused routes.
• Deleted unnecessary controllers and views.

What Was Fixed

• Removed duplicate Route::resource('products', ProductController::class);
• Fixed incorrect Route::resource('categories', ProductController::class); (changed to CategoryController)
• Grouped dashboard, admin panel, products, and categories inside an auth middleware

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5. Project Pushed to GitHub (main branch)

The project has been successfully pushed to GitHub in the main branch.

Ensure all changes are added: git add .

Commit changes with a message: git commit -m "Refactored controllers using services."

Rename master to main: git branch -m master main

Push the local main branch to GitHub: git push -u origin main --force

Create a version tag: git tag v1.0.0

Push the tag to GitHub: git push origin v1.0.0

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6. Updating README.md

• Updated installation instructions in README.md.
• Added details for setting up the project, running migrations, and accessing the admin panel.

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7. Conclusion

The first version of the project has been successfully tagged and pushed to GitHub.

Version: v1.0.0

The project is now available for use and further improvements.