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Building an AI-Powered Laravel + MongoDB App

 


Building an AI-Powered Laravel + MongoDB App

A Walkthrough Using Laravel Boost

This tutorial shows how to build a modern AI-enabled app using:

  • Laravel 11

  • 🍃 MongoDB

  • 🤖 OpenAI API (for AI features)

  • 🚀 Laravel Boost (for AI-assisted development)

We’ll build a simple AI Knowledge Base App where:

  • Users submit content

  • AI generates summaries

  • Data is stored in MongoDB

  • AI responses are cached and reusable

Step 1: Install Laravel 11

composer create-project laravel/laravel ai-mongo-app
cd ai-mongo-app

Step 2: Install MongoDB in Laravel

Laravel doesn’t support MongoDB natively, so we install the MongoDB driver:

composer require mongodb/laravel-mongodb

Update .env

DB_CONNECTION=mongodb
DB_HOST=127.0.0.1
DB_PORT=27017
DB_DATABASE=ai_app
DB_USERNAME=
DB_PASSWORD=

Update config/database.php

'default' => env('DB_CONNECTION', 'mongodb'),

Step 3: Create MongoDB Model

Unlike SQL, MongoDB uses collections instead of tables.

php artisan make:model Article -m

Update Article.php:

use MongoDB\Laravel\Eloquent\Model;

class Article extends Model
{
protected $connection = 'mongodb';
protected $collection = 'articles';

protected $fillable = [
'title',
'content',
'summary',
'ai_embedding'
];
}

 No traditional migrations needed unless you want validation structure.


Step 4: Add OpenAI Integration

Install HTTP client if needed:

composer require guzzlehttp/guzzle

Create a service:

php artisan make:service OpenAIService

app/Services/OpenAIService.php

namespace App\Services;

use Illuminate\Support\Facades\Http;

class OpenAIService
{
public function summarize($text)
{
$response = Http::withToken(env('OPENAI_API_KEY'))
->post('https://api.openai.com/v1/chat/completions', [
'model' => 'gpt-4o-mini',
'messages' => [
['role' => 'user', 'content' => "Summarize this: ".$text]
],
]);

return $response['choices'][0]['message']['content'] ?? null;
}
}

Add in .env:

OPENAI_API_KEY=your_key_here

Step 5: Store AI Summary in MongoDB

Create controller:

php artisan make:controller ArticleController
use App\Models\Article;
use App\Services\OpenAIService;

public function store(Request $request, OpenAIService $ai)
{
$summary = $ai->summarize($request->content);

Article::create([
'title' => $request->title,
'content' => $request->content,
'summary' => $summary,
]);

return back()->with('success', 'AI summary generated!');
}

Now every article automatically gets an AI-generated summary.

Step 6: Using Laravel Boost for Faster Development

Laravel Boost helps you:

  • Generate models instantly

  • Create controllers with AI prompts

  • Generate test cases

  • Refactor code intelligently

  • Create API resources quickly

Example AI Prompt inside Boost:

Generate a RESTful API for Articles with pagination, filtering, and search.

Boost will auto-generate:

  • Controller

  • Resource class

  • API routes

  • Validation rules

  • Feature tests

Huge productivity gain 🚀


Step 7: Add AI Embeddings (Advanced Feature)

For semantic search:

  1. Generate embeddings from OpenAI

  2. Store vector inside MongoDB

  3. Use vector search (MongoDB Atlas)

Modify OpenAI service:

public function embedding($text)
{
$response = Http::withToken(env('OPENAI_API_KEY'))
->post('https://api.openai.com/v1/embeddings', [
'model' => 'text-embedding-3-small',
'input' => $text,
]);

return $response['data'][0]['embedding'] ?? [];
}

Store in MongoDB:

'ai_embedding' => $embeddingArray

Now you can implement:

  • AI-powered search

  • Recommendation system

  • Similar content suggestions


Recommended Architecture

User Input →
Controller →
AI Service →
MongoDB Store →
Vector Index →
AI Search →
Response

Best Practices

✔ Cache AI responses
✔ Queue AI requests (don’t block request lifecycle)
✔ Use Laravel Queues
✔ Rate-limit API calls
✔ Validate input length
✔ Log AI failures


Real Use Cases

  • AI Blog Platform

  • Smart CRM Notes

  • AI Resume Analyzer

  • AI SaaS Dashboard

  • Knowledge Base Search

  • AI-powered Chat Support


When to Use MongoDB Instead of MySQL?

Use MongoDB when:

✔ You need flexible schema
✔ You store AI vectors
✔ You handle JSON-heavy data
✔ Rapid prototyping
✔ Large text content

Use MySQL when:

✔ Strong relational data
✔ Complex joins
✔ Traditional business systems


Final Thoughts

Laravel + MongoDB + AI is powerful for:

  • SaaS apps

  • AI startups

  • Automation tools

  • Smart dashboards

Using Laravel Boost dramatically speeds up development and testing.

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