javascript - 使用 BackboneJS 从 subview 调用 View 函数

Question

我想知道是否可以使用 BackboneJS 从 subview 调用 View 函数。如果是，它是如何工作的？

我想从 subview 调用属于主视图的函数“hello”。

也许如果事件触发...

例子:

var MainView = Backbone.View.extend({

    initialize: function() {
        this.$template = $(template);
        this.subview = new SubView();               
        this.render();              
    },

    render: function() {
        this.$el.html(this.$template);
        var element = this.$template.attr('id');
        this.subview.setElement('#'+element).render();
    },

    hello: function() {
        alert('Hello');
    }

});


var SubView = Backbone.View.extend({

    initialize: function() {
        this.$template = $(template);           
        this.render();              
    },

    render: function() {
        this.$el.html(this.$template);
        //Call view function ' hello '
        //parentView.hello();
    }

});

谢谢!

Answer 1

您可以将引用从您的父 View 传递到您的 subview :

http://jsfiddle.net/puleos/hecNz/

var MainView = Backbone.View.extend({

    initialize: function() {
        this.$template = $("<span>foo</span>");
        this.subview = new SubView({parent: this});               
        this.render();              
    },

    render: function() {
        this.$el.html(this.$template);
        var element = this.$template.attr('id');
        this.subview.setElement('#'+element).render();
    },

    hello: function() {
        alert('Hello');
    }

});


var SubView = Backbone.View.extend({

    initialize: function(options) {
        this.$template = $("<span>bar</span>");
        this.parent = options.parent;
        this.render();              
    },

    render: function() {
        this.$el.html(this.$template);
        this.parent.hello();
    }

});

var mainView = new MainView();

console.log(mainView);