Laravel 5 - 所有模板中都可用的全局 Blade 视图变量 [英] Laravel 5 - global Blade view variable available in all templates

问题描述

我如何在 Laravel 5 中创建可在所有 Blade 模板中使用的全局变量?

How can I in Laravel 5 make global variable which will be available in all Blade templates?

推荐答案

选项 1:

你可以像这样使用view::share():

<?php namespace AppHttpControllers;

use View;

//You can create a BaseController:

class BaseController extends Controller {

    public $variable1 = "I am Data";

    public function __construct() {

       $variable2 = "I am Data 2";


       View::share ( 'variable1', $this->variable1 );
       View::share ( 'variable2', $variable2 );
       View::share ( 'variable3', 'I am Data 3' );
       View::share ( 'variable4', ['name'=>'Franky','address'=>'Mars'] );
    }  

}

class HomeController extends BaseController {

    //if you have a constructor in other controllers you need call constructor of parent controller (i.e. BaseController) like so:

    public function __construct(){
       parent::__construct();
    }

    public function Index(){
      //All variable will be available in views
      return view('home');
    }

}

选项 2:使用作曲家:

1. 在 appComposersHomeComposer.php
创建一个 Composer 文件

1. Create a composer file at appComposersHomeComposer.php

注意:如果 appComposers 不存在，则创建它

NB: create appComposers if it does not exists

<?php namespace AppComposers;

class HomeComposer
{

    public function compose($view)
    {
        //Add your variables
        $view->with('variable1',      'I am Data')
             ->with('variable2',      'I am Data 2');
    }
}

然后您可以通过执行此操作将作曲家附加到任何视图

<?php namespace AppHttpControllers;

use View;

class HomeController extends Controller{


    public function __construct(){

        View::composers([
            'AppComposersHomeComposer'  => ['home'] //attaches HomeComposer to home.blade.php
        ]);

    }

    public function Index(){
        return view('home');
    }

}

选项 3:将 Composer 添加到服务提供者，在 Laravel 5 中，我更喜欢将我的 Composer 放在 AppProvidersViewServiceProvider

Option 3: Add Composer to a Service Provider, In Laravel 5 I prefer having my composer in AppProvidersViewServiceProvider

1. 在 appComposersHomeComposer.php

将 HomeComposer 添加到 AppProvidersViewServiceProvider

Add HomeComposer to AppProvidersViewServiceProvider

<?php

namespace AppProviders;

use IlluminateSupportServiceProvider;
use View;
use AppComposersHomeComposer;
use IlluminateSupportFacadesBlade;

class ViewServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
 *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        //add to all views
        view()->composer('*', HomeComposer::class);
        //add to only home view 
        //view()->composer('home', HomeComposer::class);
    }
}

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