When and why do we use Laravel Inertiajs Vue3?

When deciding whether to use Laravel with Inertia.js and Vue 3 for a production-level application, it's important to consider the specific needs of your project and the benefits that this stack can provide.

Inertia.js is a library that allows you to create a single-page application (SPA) without much of the complexity that comes with a full Vue.js frontend and a separate backend API. It allows you to write your Vue components and manage your frontend just like a typical Vue SPA, but your page visits are powered by server-side routing and controllers, thanks to Laravel.

Here are some reasons why you might choose Laravel with Inertia.js and Vue 3 for your project:

1. Tighter Integration: Since Inertia.js allows you to use server-side routes and controllers to manage page visits, you can leverage the full power of Laravel's features directly within your Vue components. This can lead to a more integrated development experience.

2. Simplified Stack: By using Inertia.js, you avoid the complexity of managing API endpoints for a separate frontend application. This can simplify development and reduce the amount of code you need to maintain.

3. Faster Prototyping: If you need to move quickly from idea to prototype, Laravel with Inertia.js and Vue 3 can be a great choice. You can iterate rapidly without having to set up and manage a separate API.

4. Reduced Complexity for SEO: Since Inertia.js serves pages via server-side controllers, it can be easier to manage SEO compared to a fully client-side SPA, which often requires additional tools like server-side rendering or pre-rendering.

5. Shared Authentication: You can use Laravel's built-in authentication for your Vue components without the need for separate tokens or API authentication mechanisms.

However, there are also scenarios where you might prefer a separate frontend and backend:

1. Large Scale Applications: For very large applications with complex frontend requirements, a separate frontend might be beneficial. This allows for more focused scaling and optimization of the frontend and backend independently.

2. Microservices Architecture: If you're planning to build a microservices architecture, having a separate frontend application that communicates with various backend services via APIs might be more appropriate.

3. Diverse Frontend Needs: If your application will have multiple frontends (web, mobile, desktop), a separate API backend can serve all these clients without duplication of logic.

In conclusion, whether you should use Laravel with Inertia.js and Vue 3 from the beginning depends on your project requirements. If you value a simplified stack with tight integration between the frontend and backend and you're not building a highly complex application, Laravel with Inertia.js and Vue 3 can be an excellent choice. If you anticipate needing a more decoupled architecture, starting with a separate frontend and backend might be the better path.

Here's a basic example of how you might set up a Laravel route using Inertia.js and Vue 3:

// In a Laravel routes file
Route::get('/dashboard', function () {
    return Inertia::render('Dashboard', [
        'props' => 'value'
    ]);
});

And the corresponding Vue 3 component:

<template>
  <div>
    <h1>Dashboard</h1>
    <!-- Your dashboard content here -->
  </div>
</template>

<script>
export default {
  props: {
    // Define the props your component will receive from Laravel
  },
  // Component logic here
}
</script>

Remember to install and set up Inertia.js according to the official documentation to ensure everything works smoothly.