Question

我有这段代码：

PageView.js

var PageView = Backbone.View.extend({
    events: {
         'click .unpublish': 'unpublish'
    },

    tagName: 'tr',
    className: 'pageedit',

    template: Handlebars.compile( PageViewTemplate ),

    render: function() {
        this.$el.html( this.template( this.model ) );
        return this;
    },

    unpublish: function() {
        alert('hi');
    }
});

PagesView.js

PagesView = Backbone.View.extend({

     tagName: 'tbody',

     initialize: function() {
         this.collection.on('reset', this.render, this);
         this.render();
     },

     template: Handlebars.compile(PagesTemplate),

     render: function() {
         var countPages = this.collection.at(0).get('count');

         _.each(this.collection.at(0).get('pages'), function(model) {
              pageView = new PageView({ model: model });
              this.$el.append( pageView.render().el );
         }, this);

         $('.main').html( this.template({ pages: this.$el.html() }) );

         this.delegateEvents(this.events);

         return this;
     },
});

Page.hbs

<td class="pageId">
    {{ id }}
</td>
<td class="pagename">
    <a href="/pages/{{ alias }}">{{ pagename }}</a>
</td>
<td class="catname">{{ catname }}</td>
<td class="author">{{ author }}</td>
<td>{{ date }}</td>
<td>
    {{#if status}}
        <a href="#" class="unpublish">
            <img src='../{{ siteURL }}assets/img/admin/published.png'>
        </a>
    {{else}}
        <a href="#" class="publish">
            <img src='../{{ siteURL }}assets/img/admin/not-published.png'>
        </a>
    {{/if}}
</td>
<td>
    <a href="#" class="intrash">
        <img src='../{{ siteURL }}assets/img/admin/delete.png'>
    </a>
</td>

Pages.hbs

<table class="table table-bordered table-striped">
    <thead>
        <tr>
            <th>ID</th>
            <th>Name</th>
            <th>Catalog</th>
            <th>Author</th>
            <th>Date</th>
            <th>Status</th>
            <th>Intrash</th>
        </tr>
    </thead>
    <tbody>
        {{{pages}}}
    </tbody>
</table>

在router.js中创建所有实例：

var pages = new Pages();
pages.fetch().done(function() {
    new PagesView({ collection: pages});
});

如果单击.unpublish链接，则不会触发PageView中的事件。所有视图呈现良好，但事件不起作用:( 可以帮我？

Answer 1

我认为你的问题就在这里：

$('.main').html( this.template({ pages: this.$el.html() }) );

只要您说this.$el.html()，就会丢失您的活动。 Backbone将delegate（或其等价的on）绑定到视图的el以进行事件处理，因此事件处理绑定到DOM节点对象。当您说this.$el.html()时，您已将所有内容转换为字符串，并且该字符串会进入DOM;但事件绑定到DOM元素对象而不是字符串。结果是一切看起来都正确但没有事件发生。

您的Pages.hbs看起来应该更像这样：

<table class="table table-bordered table-striped">
    <thead>
        <tr>
            <th>ID</th>
            <th>Name</th>
            <th>Catalog</th>
            <th>Author</th>
            <th>Date</th>
            <th>Status</th>
            <th>Intrash</th>
        </tr>
    </thead>
</table>

然后你应该做这样的事情来获取页面上的所有内容：

// Add the basic <table> HTML.
$('.main').html(this.template());
// Append the <tbody> DOM node which has event handling attached to it.
$('.main').find('table.table').append(this.$el);

Backbone事件不会使用Handlebars模板触发

1 个答案: