Populate form and update with Laravel Collective

I didn't understand the documentations and examples I've found around about populating a form with Form::model() and updating the data.

First, the form is not being populated with it.

{!! Form::model($post, ['route' => ['/admin/post/edit', $post->id]]) !!}
...
{!! Form::close() !!}

The Controller:

public function edit($id)
{
    return \View::make('admin/post/edit')->with([
        'post' => \DB::table('posts')->find($id)
    ]);
}

The route:

Route::get('/admin/post/edit/{id}', [
    'as' => '/admin/post/edit',
    'uses' => 'Admin\PostController@edit'
]);

According to what I've seen, the form was supposed to be filled with the selected data automagically, but that's not the case with me. I tested the $post variable with {{ var_dump($post) }} and it printed the information from the database, which means it's returned, but why isn't the form filled?

via Chebli Mohamed