Laravel中的页眉控制器

Question

I am working on Laravel for the first time

i have to make a Front End Menu Dynamic in Header and Footer [ list of categories will come from database ]. which controller I have to use for this.? any common controller available in this framework to send data to header and footer.

When I receive the data in HomeController index Action its available for the home page only.

class HomeController {
public function index() 
    {
        $categories = Category::get();
        return view('home', compact('categories'));
    }
}

Thanks.

Answer 1

This is a perfect case for View Composers:

View composers are callbacks or class methods that are called when a view is rendered. If you have data that you want to be bound to a view each time that view is rendered, a view composer can help you organize that logic into a single location.

You may attach a view composer to multiple views at once by passing an array of views as the first argument to the composer method:

View::composer(['partials.header', 'partials.footer'], function ($view) {
    $view->with('categories', [1, 2, 3]); // bind data to view
});

Now you could simply retrieve $categories within your view (blade template).

Tip: Common practice is to create a new service provider called ComposerServiceProvider and place the abovementioned composer logic in the boot() method.