backbone.js - 为什么行为不允许动态传递？

Question

我正在研究 Marionette.behavior。我试图在 View 初始化时动态传递行为哈希，但它没有被分配给 View 的行为对象。因为行为在 View 构建时被初始化。
所以我们通过以下方式实现了解决方案，但这是实现它的正确方法吗？
有没有其他方法可以实现？和
为什么行为不允许动态传递？

这是代码:

var Behaviour = new Marionette.Application();

Behaviour.addRegions({
    mainRegion:"#main-region"
});


var Person = Backbone.Model.extend({
       defaults:{
         firstName:"NA",
         lastName:"NA",
        phoneNumber:"NA",
        presentAddr:"NA",
        permanantAddr:"NA"
    }
});


var buttonView=Marionette.ItemView.extend({

template:"#buttontemplate",


 constructor:function(options){


     this.behaviors = options.behaviors;
     Marionette.ItemView.apply(this, arguments);

 },


events:{

    "click .display":"displayDetail"
 },

 displayDetail:function(){

     this.triggerMethod("DisplayPersonDetails");

},

//behaviors:{Behavior1:{ },Behavior2:{ }}
})


var PersonDetailsView = Marionette.ItemView.extend({

template:"#static-template",

ui: {
"Change": ".change"
},

events:{

"click @ui.Change":"changeBehavior"
},

 changeBehavior:function(){

},

});

var Behavior1 = Marionette.Behavior.extend({

    onDisplayPersonDetails:function(){

    var person=new      Person({firstName:"abhijeet",lastName:"avhad",phoneNumber:"9604074690",permanantAddr:"sangamner",presentAddr:""})
    var myView = new PersonDetailsView({model:person});
    Behaviour.mainRegion.show(myView);

    }

});

var Behavior2 = Marionette.Behavior.extend({

    onDisplayPersonDetails:function(){


    var person =new Person({firstName:"abhijeet",lastName:"avhad",phoneNumber:"9604074690",permanantAddr:"",presentAddr:"shivajinagar"})
    var myView =new PersonDetailsView({model:person});
    Behaviour.mainRegion.show(myView);


    }

});


Behaviour.on("initialize:after", function(){

    console.log(" started!");

        Marionette.Behaviors.behaviorsLookup = function() {
         return window.Behaviors;
    };  


    window.Behaviors = {};

        window.Behaviors.Behavior1 = Behavior1;
        window.Behaviors.Behavior2 = Behavior2; 

    var buttonview=new buttonView({behaviors:{Behavior1:{ },Behavior2:{}}});
        Behaviour.mainRegion.show(buttonview);  

});
Behaviour.start();

Answer 1

实现这一点的另一种方法是在您的定义中声明一个函数，该函数返回初始化时提供的行为，如下所示:

var buttonView=Marionette.ItemView.extend({
    ...
    behaviors: function () {
        return this.options.behaviors;
    },
    ...