How to make a variable accessable to the whole controller in laravel

Question

Lets say I have a

IndexController

Which contains a function

public function store($store)
{
    $store = (query)->get();
    return $store;
}

Now I want one column from store to be accessible to all functions like

$id = $store->id

I want it to be usable like this

public function abv()
{
    $categories = (query)->where('id','=',$id)->get();
}

My point is that it becomes a global variable to the whole controller. How do I achieve this?

Answer 1

You can set this value in the constructor of your controller as a private property.

class MyController {
    private $id;

    public function __construct() {
        $this->id = (query)->get();
    }

    // More controller functions
}

Now any function in your controller will be able to call this property using $this->id.