Inertia.js and Vue with Pinia and Vue Router serve different purposes and have different philosophies when it comes to building a web application. Here's a breakdown of the considerations you mentioned:
a) Coupling between backend and frontend: Inertia.js does indeed couple your frontend and backend more closely than a traditional SPA setup with Vue, Pinia, and Vue Router. Inertia allows you to create server-driven single-page apps without building an API. It works by returning server-side responses that Inertia can handle on the client side, which means your backend is responsible for routing and can directly pass data to your Vue components.
If you want to maintain a strict separation between your frontend and backend, or if you plan to have multiple frontends (e.g., web and mobile) that consume the same API, then sticking with Vue, Pinia, and Vue Router might be a better choice. This way, your Laravel backend would only serve as an API, and you could swap out the frontend technology without affecting the backend.
b) Control over data loading: With Vue, Pinia, and Vue Router, you have granular control over data fetching and state management. You can decide exactly when to fetch data, how to cache it, and how to update it. This can be beneficial for large projects where performance and data management are critical.
Inertia.js simplifies the process by handling data passing as part of the page visit. It can indeed do lazy loading and partial reloads, but you might find that for very complex state management scenarios, you might prefer the explicit control that Pinia provides.
Inertia.js is great for projects where you want to get up and running quickly and prefer to write your routing and controllers in Laravel. It's also beneficial if you want to avoid the complexity of managing an API and prefer a more monolithic approach.
Ultimately, the choice between Inertia.js and Vue with Pinia and Vue Router depends on your project requirements and personal preferences. If you value a strict separation of concerns and need fine-grained control over state and routing, you might stick with Vue, Pinia, and Vue Router. If you prefer a more integrated approach and are comfortable with the coupling that Inertia.js introduces, then Inertia could be a good fit.
Here's a simple example of how you might use Inertia.js in a Laravel controller:
use Inertia\Inertia;
public function index()
{
$users = User::all();
return Inertia::render('Users/Index', ['users' => $users]);
}
And in your Vue component, you would access the users prop directly:
<template>
<div>
<ul>
<li v-for="user in users" :key="user.id">{{ user.name }}</li>
</ul>
</div>
</template>
<script>
export default {
props: {
users: Array
}
}
</script>
In contrast, with Vue and Pinia, you would fetch the data from an API endpoint using an Axios call within a Pinia action, and then use Vue Router for client-side routing.
Remember that there's no one-size-fits-all solution, and the best choice depends on the specific needs of your project.