Laravel 5.1 : Passing Data to View Composer

Question

I'm using view composers in Laravel 5.1: nice. But how can I pass parameters to a view composer?

In my case I send week info (previous, current, next week, including the dates) to my view with de view composer. The current week is variable, not only from an url, but also from the controller.

public function compose(View $view)
{
   // I need a parameter here (integers)
}

Answer 1

If you have to pass parameters from a controller to a view composer, you can create a wrapper class for the composer and pass data to it whenever needed. Then, when you're done setting up you data, you can compose the view:

ComposerWrapper class

public function __construct(array $data)
{
    $this->data = $data;
}

public function compose()
{        
    $data = $this->data;

    View::composer('partial_name', function( $view ) use ($data) 
    {
        //here you can use your $data to compose the view
    } );
}

Controller

public function index()
{
    //get the data you need
    $data = ['first_value' = 1]; 

    //pass the data to your wapper class
    $composerWrapper = new ComposerWrapper( $data );

    //this will compose the view
    $composerWrapper->compose();

   //other code...
}

Answer 2

All the data you pass to your view in the controller will be available in the view controller. Use the getData method on the view instance like this:

$view->getData()["current_week"];

In your particular case, you can do this:

public function compose(View $view)
{
   $current_week = $view->getData()["current_week"];
   //use $current_week as desired 
}

You can also get the data in the route (route parameters) from the request like this:

request()->route()->getParameter('week_number');