如何在 Yii2 中编写全局函数并在任何视图中访问它们(不是自定义方式) [英] How to write global functions in Yii2 and access them in any view (not the custom way)

问题描述

Yii1.1 有一个 CComponent 类，它有一个 CBaseControllerCController 的基类.有一个/protected/components/Controller.php 类，它允许在任何视图中访问该类中的任何函数.

Yii1.1 had a CComponent class that had a CBaseController which was the base class for CController. There was a /protected/components/Controller.php class which enabled any function in that class to be accessed in any view.

Yii2 不再拥有 CComponent 类.Yii2 指南 指出Yii 2.0 中断1.1 中的 CComponent 类分为两个类:yii\base\Object 和 yii\base\Component".有谁知道如何在 Yii2 中编写全局函数，并在任何视图中编写它们，就像在 Yii1.1 中使用/protected/components/Controller.php 一样?

Yii2 no longer possess the CComponent class. The Yii2 guide indicates that "Yii 2.0 breaks the CComponent class in 1.1 into two classes: yii\base\Object and yii\base\Component". Does anyone know how to write global functions in Yii2 and them in any view, just like it was in Yii1.1 using /protected/components/Controller.php?

几个类似的主题 讨论自定义答案，但我想知道是否有官方的方式来做到这一点，而不是自定义方式.

A couple of similar topics discuss custom answers, but I would like to know whether there is an official way of doing that, not the custom way.

推荐答案

按照步骤:
1)创建以下目录后端/组件"
2)在components"文件夹中创建BackendController.php"控制器

Follow Step:
1) create following directory "backend/components"
2) create "BackendController.php" controller in "components" folder

<?php    
    namespace backend\components;
    use Yii;

    class BackendController extends \yii\web\Controller
    {
        public function init(){
            parent::init();

        }
        public function Hello(){
            return "Hello Yii2";
        }
    }

3) 所有支持的控制器都扩展到BackendController"(如).

3) all backed controller extend to "BackendController" (like).

<?php
namespace backend\controllers;

use Yii;
use backend\components\BackendController;

class SiteController extends BackendController
{

    public function beforeAction($event)
    {
        return parent::beforeAction($event);
    }

    public function actionIndex(){
        /* You have to able for call hello function to any action and view */
        //$this->Hello(); exit;

        return $this->render('index');
    }
}

4) 创建你的动作视图页面 "index.php" (like)

4) create your action view page "index.php" (like)

<?php
print $this->Hello();
?>

这篇关于如何在 Yii2 中编写全局函数并在任何视图中访问它们(不是自定义方式)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！