我希望$year
变量可用于PagesController
的所有功能。我试过这段代码,但我没有成功。
class PagesController extends Controller
{
public function __construct()
{
$dt = Carbon::parse();
$year = $dt->year;
}
public function index()
{
return view('pages.index');
}
public function about()
{
return view('pages.about', compact('year'));
}
public function create()
{
return view('pages.create', compact('year'));
}
}
答案 0 :(得分:19)
<强> 1。选项:使用AppServiceProvider
在这种情况下,所有视图都可以使用$ year!
<?php
namespace App\Providers;
use Carbon;
class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
{
view()->share('year', Carbon::parse()->year);
}
/**
* Register the service provider.
*
* @return void
*/
public function register()
{
//
}
}
<强> 2。选项:使用View Composer
在这种情况下,变量仅适用于您需要的视图。
不要忘记将新创建的提供程序添加到config/app.php
!
<?php
namespace App\Providers;
use Illuminate\Support\ServiceProvider;
use Carbon;
class ComposerServiceProvider extends ServiceProvider
{
/**
* Register bindings in the container.
*
* @return void
*/
public function boot()
{
// Using Closure based composers...
view()->composer('pages.*', function ($view) {
$view->with('year', Carbon::parse()->year);
});
}
/**
* Register the service provider.
*
* @return void
*/
public function register()
{
//
}
}
第3。使用刀片@inject-method
在需要这一年的视图中,你可以像这样注入一个Carbon实例:
@inject('carbon', 'Carbon\Carbon')
{{ $carbon->parse()->year }}
答案 1 :(得分:7)
试试这个:
//give private declaration
private $year;
public function __construct()
{
$dt = Carbon::parse();
$this->year = $dt->year;
}
public function index()
{
return view('pages.index');
}
public function about()
{
$year = $this->year;
return view('pages.about',compact('year') );
}
public function create()
{
$year = $this->year;
return view('pages.create',compact('year') );
}
答案 2 :(得分:5)
您可以在事件
之前的App ::中创建全局单例App::before(function($request) {
App::singleton('customYear', function(){
$dt = Carbon::parse();
$customYear = $dt->year;
return $customYear;
});
// If you use this line of code then it'll be available in any view
View::share('customYear', app('customYear'));
//To get the same data in any controller you may use:
$customYear = app('customYear');
});