laravel 实现向公共模板中传值 (view composer)

php artisan make:provider ComposerServiceProvider

public function boot()
 {
  view()->composer(
   'app', //模板名
   'App\Http\ViewComposers\MovieComposer' //方法名或者类中的方法
  );
 }

view()->composer('app','App\Http\ViewComposers\MovieComposer@foobar'); //自己定义的方法

<?php

namespace App\Http\ViewComposers;

use Illuminate\View\View;//**记得引入这个啊（因为在composer函数参数里使用了View类）**

class MovieComposer
{
 public $movieList = [];
 public function __construct()
 {
  $this->movieList = [
   'Shawshank redemption',
   'Forrest Gump',
  ];
 }
 public function compose(View $view)
 {
  $view->with('latestMovie');
 }
}

view()->composer('*', function (View $view) {
 //logic goes here
});

view()->composer(['nav', 'footer'],'App\Http\ViewComposers\MovieComposer');

 view()->composer(['admin.admin'], function ($view){
   $column = $this->object_array(DB::table('column')->get());
   foreach($column as $k=>$v){
    $chid = explode(',',$v['childid']);
    foreach($chid as $value){
     $column[$k]['chname'][] = $this->object_array(DB::table('column_child')->where('id',$value)->first());
    }
   }
   $view->with('columns',$column);
  });