laravel在视图之间共享变量

Question

Consider this route:

Route::get('/', function()
{
    $categories = Category::all()->toHierarchy();

    $stats = array(
        'total_users' => User::all()->count(),
        'total_services' => 5,
        'total_orders' => 2,
        'latest_service' => '1 hour ago'
    );

    return View::make('homepage')
                                ->with('categories', $categories)
                                ->with('stats', $stats);
});

But I need $categories and $stats in all views! I don't want to repeat db calls in every view or controller, how would I go about implementing this?

Answer 1

You're looking for View Composers . They allow you to run some code whenever a certain view (or all views via * ) are rendered.

View::composer('*', function($view){
    $categories = Category::all()->toHierarchy();

    $stats = array(
        'total_users' => User::all()->count(),
        'total_services' => 5,
        'total_orders' => 2,
        'latest_service' => '1 hour ago'
    );
    $view->with('categories', $categories)
         ->with('stats', $stats);
}

You can put this code in your app/filters.php or create a new file app/composers.php and include it by adding require app_path().'/composers.php'; at the end of app/start/global.php

Answer 2

You can use simple:

View::share('data', $data);
View::make....

for passing variables to all views.