Laravel Core Structure Summary

SolvingSphere/
│
├── app/
│   ├── Http/Controllers/       ← 🟢 Controllers (C)
│   │   ├── Problems/           ← 🟢 Folder for problems section contains multibles files or folders if needed
│   │   │   ├── ProblemController.php
│   │   │   ├── ...
│   │   │   └── any other files you need
│   │   ├── Blogs/
│   │   │   └── ...
│   │   ├── Containers/
│   │   │   └── ...
│   │   ├── Status/
│   │   │   └── ...
│   │   ├── Groups/
│   │   │   └── ...
│   │   ├── Admins/
│   │   │   └── ...
│   │   └── Profiles/
│   │       └── ...
│   │
│   │
│   └── Models/                 ← 🔵 Models (M)
│       ├── problems.php        ← 🔵 file for problems sectoin (usually contains one Model)
│       ├── blogs.php
│       ├── containers.php
│       ├── status.php
│       ├── groups.php
│       ├── admin.php
│       └── profile.php
│
│
├── database/                   ← 🟠 Folder to control the database
│   ├── factories/              ← 🟠 Factories (Generate fake or static data according to Models)
│   │   └── ProblemFactory.php
│   ├── migrations/             ← 🟠 Migrations (define schema for Models)
│   │   └── 2024_01_01_create_problems_table.php
│   └── seeders/                ← 🟠 Seeders (Fill the tables "Models" with factories' data)
│       └── ProblemSeeder.php
│
│
├── resources/
│   ├── views/                  ← 🔴 ALL Views (V)
│   │   ├── Components/         ← 🔴 Blade General Components 
│   │   │   └── MyButton.blade.php
│   │   ├── index.blade.php
│   │   ├── Problems/           ← 🔴 Views for problems Section
│   │   │   ├── all_problems.blade.php
│   │   │   ├── ...
│   │   │   └── problem.blade.php
│   │   ├── Blogs/
│   │   │   └── ...
│   │   ├── Containers/
│   │   │   └── ...
│   │   ├── Status/
│   │   │   └── ...
│   │   ├── Groups/
│   │   │   └── ...
│   │   ├── Admins/
│   │   │   └── ...
│   │   └── Profiles/
│   │       └── ...
│   ├── js/                     ← 🔴 React General files
│   │   ├── Components/         ← 🔴 React General Components 
│   │   │   └── MyButton.jsx
│   │   └── app.jsx
│   └── css/                    ← 🔴 CSS General files (for custom styles)
│       └── app.css         
├── routes/
│   └── web.php                ← Connects routes to Controllers

🗂️ Legend:

• 🟢 Controllers: Handle app logic and return views or JSON.
• 🔵 Models: Represent data and DB logic using Eloquent ORM.
• 🔴 Views: Blade templates for rendering HTML.
• 🟠 Databases: Manage database

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Laravel: MVC Structure

Models (solvingsphere/app/Models/)

• Represent a database table using Eloquent ORM.
• Define relationships and data logic.

class Post extends Model {
    protected $fillable = ['title', 'body'];
}

---

Views (solvingsphere/resources/views/)

• Blade templates for the user interface.
• Use logic + HTML to display data from controllers.

<!-- posts/index.blade.php -->
@foreach ($posts as $post)
    <h2>{{ $post->title }}</h2>
@endforeach

---

Controllers (solvingsphere/app/Http/Controllers/)

• Handle logic for user requests.
• Receive data from routes, interact with models, and return views or JSON.

// Example
public function index() {
    $posts = Post::all();
    return view('posts.index', compact('posts'));
}

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Laravel : Database Component

Migrations (solvingsphere/database/migrations/)

• Define database structure in PHP.
• Track changes to the schema over time (versioning).

Schema::create('problems', function (Blueprint $table) {
    $table->string('problem_handle')->primary();
    $table->string('website');
    $table->string('title');
    .
    ...
    $table->timestamps();
});

---

Factories (solvingsphere/database/factories/)

• Used to generate fake data for testing or seeding.
• Often paired with models and seeders.

Problem::factory()->count(10)->create();

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Seeders (solvingsphere/database/seeders/)

• Insert sample or default data into your tables.
• Often used to fill the DB with test data after migrations.

Problem::factory(10)->create();

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🛠️ Stages of Building a Laravel App

Stage 1: Set Up Project

• Install Laravel via Composer.
• Configure .env for DB and app settings.

composer create-project laravel/laravel my-app

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🧱 Stage 2: Design Database

• Plan your tables and relationships.
• Create models and migrations.

php artisan make:model Post -m

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📂 Stage 3: Run Migrations

• Build your database schema using migrations.

php artisan migrate

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🏭 Stage 4: Create Factories & Seeders

• Add test data with factories and seeders.

php artisan make:seeder PostSeeder
php artisan db:seed

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⚙️ Stage 5: Define Routes and Controllers

• Add logic to respond to HTTP requests.
• Create controllers and connect them to routes.

php artisan make:controller PostController

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🧠 Stage 6: Build Views

• Create Blade templates for displaying content.
• Pass data from controller to view.

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🌐 Stage 7: Test and Run App

• Use Laravel’s built-in server to run the app.

php artisan serve

• Test routes, views, and data flow.

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