yii2行为用法1

静态绑定

<?php

namespace app\controllers;

use Yii;
use yii\filters\AccessControl;
use yii\web\Controller;

use vendor\animal\Cat;
use vendor\animal\Mourse;
use vendor\animal\Dog;
use yii\base\Event;

class AnimalController extends Controller
{

    public function actionIndex2()
    {

        $dog = new Dog();
        $dog->look();
        $dog->eat();
        $dog->height=100;
        $dog->trigger('wang');
    }

<?php
namespace  vendor\animal;
use app\behaviors\Behavior1;
use yii\base\Component;

class Dog extends Component{

    public function behaviors(){
        return [
            Behavior1::class,
        ];
    }

    public function look(){
        echo 'i am looking<br/>';
    }
}

Dog

<?php
namespace app\behaviors;
use yii\base\Behavior;


class Behavior1 extends  Behavior{
    public $height;
    public function eat(){
        echo 'dog eat <br>';
    }

    public function events()
    {
        return [
            'wang'=>'shout'
        ];
    }

    public function shout(){
        echo 'wang wang wang <br>';
    }

}

Behavior1

动态绑定

<?php

namespace app\controllers;

use Yii;
use yii\filters\AccessControl;
use yii\web\Controller;
use app\behaviors\Behavior1;
use vendor\animal\Cat;
use vendor\animal\Mourse;
use vendor\animal\Dog;
use yii\base\Event;

class AnimalController extends Controller
{

    /**
     * Displays homepage.
     *
     * @return string
     */
    public function actionIndex()
    {
        $cat = new Cat();
        $cat2 = new Cat();
        $mourse = new Mourse();
        $dog = new Dog();

        //类级别事件
        Event::on(Cat::class,'miao',[$mourse,'run']);

        //事件的绑定
//        $cat->on('miao',[$mourse,'run']);
        //事件的绑定 顺序
//        $cat->on('miao',[$dog,'look'],null,false);
        $cat->shout();
        $cat2->shout();


        //全局事件
        Yii::$app->on('miao', [$dog,'look']);
        Yii::$app->trigger('miao');
    }

    public function actionIndex2()
    {

        $dog = new Dog();

        $behavior1 = new Behavior1();
        //将行为绑定到类上 动态绑定
        $dog->attachBehavior('beh1',$behavior1);
        // 访问行为中的属性和方法，就和访问类自身的属性和方法一样
        $dog->eat();
        $dog->trigger('wang');
    }


}

<?php
namespace  vendor\animal;

use yii\base\Component;

class Dog extends Component{
    

    public function look(){
        echo 'i am looking<br/>';
    }
}

<?php
namespace app\behaviors;
use yii\base\Behavior;


class Behavior1 extends  Behavior{
    public $height;
    public function eat(){
        echo 'dog eat <br>';
    }

    public function events()
    {
        return [
            'wang'=>'shout'
        ];
    }

    public function shout(){
        echo 'wang wang wang <br>';
    }

}

更多：​​http://www.digpage.com/behavior.html​​