[php] Laravel 4: how to "order by" using Eloquent ORM

Simple question - how do I order by 'id' descending in Laravel 4.

The relevant part of my controller looks like this:

$posts = $this->post->all()

As I understand you use this line:

->orderBy('id', 'DESC');

But how does that fit in with my above code?

This is how I would go about it.

$posts = $this->post->orderBy('id', 'DESC')->get();

If you are using the Eloquent ORM you should consider using scopes. This would keep your logic in the model where it belongs.

So, in the model you would have:

public function scopeIdDescending($query)
{
        return $query->orderBy('id','DESC');
}   

And outside the model you would have:

$posts = Post::idDescending()->get();

More info: http://laravel.com/docs/eloquent#query-scopes