Backgrid:render未被调用

Question

Backgrid正在渲染

<table class="backgrid"></table>

但别无他法。Backgrid:render()中的断点未到达。我是一个改编别人代码的骨干新手，所以不确定到底会发生什么，但是LayoutManager:render()是called..it，似乎永远不会到达Backgrid……我想要显示的数据正在被获取，看起来它们似乎在正确的位置，format...but不得不承认，一旦它们被包装在主干集合中，就很难区分它们。任何关于如何调试/为什么Backgrid的渲染没有被调用的指针都会被感激地收到。

代码如下：

ListenView.js

define([
    'backbone',
        'underscore',
        'backgrid',
    'app/models/PersonModel',
    'app/collections/PersonCollection',
    'app/views/PersonListView',
    'hbs!app/templates/listen_template'
    ],
    function(
    Backbone,
        _,
        Backgrid,
        Person,
    PersonCollection,
    PersonListView,
    listenTemplate
    ) {

    App = window.App || {};
    var ListenView = Backbone.View.extend({
        template: listenTemplate,
        initialize: function(params) {
            //fetch the list of seen people
            this.model.attributes.seenPeople.fetch( {
                success: function(coll, resp) {
                    //console.log(coll);
                }
            });
        },
        afterRender: function() {
            //initialise person view
        console.log("creating Backgrid");
        this.seenPeopleView = new Backgrid.Grid({
                        columns: [{
                                name: "email",
                                label: "Email",
                                cell: "string"  
                        },{
                                name: "id",
                                label: "ID",
                                cell: "integer"  
                        }, {
                                name: "title",
                                label: "Title",
                                cell: "string" }
                        ],
                        collection: this.model.attributes.seenPeople
                    });
            this.seenPeopleView.render();
                $('#seen-people-list').append(this.seenPeopleView.el);
    }

Answer 1

在fetch的成功方法中，您应该调用afterRender。

 var self=this;
 this.model.attributes.seenPeople.fetch( {
     success: function(coll, resp) {
                self.afterRender();
            }
 });

Answer 2

不是在视图(this.seenPeopleView)中创建背景网格实例，而是将实例创建为

var grid = new Backgrid.Grid({...<your columns and collection related code>..});

然后呈现网格并将根目录附加到HTML文档，如下所示

$('#seen-people-list').append(grid.render().el);

希望它能起作用:)