我正在学习Ember JS和Handlebars JS,所以我对此很陌生。
我在尝试循环嵌套JSON数组时遇到问题。我无法遍历下面JSON中的“页面”。
这是JSON:
{
"Pages": [
{
"Id": 1,
"Name": "Page 1",
"Objects": [
{
"Width": 100,
"Height": 200,
"Type": "Shape"
},
{
"Width": 150,
"Height": 250,
"Type": "Image"
}
]
},
{
"Id": 2,
"Name": "Page 2",
"Objects": [
]
}
],
"Settings": {
"URL": "http://THEURL",
"Location": true,
"Navigation": true
},
"Id": 1,
"Title": "The Title",
"Description": "The Description"
}
这是我的车把模板:
<script type="text/x-handlebars" id="pages">
<div class="container">
<div class="row">
<h1>{{Title}}</h1> <!-- This works -->
<h2>{{Description}}</h2> <!-- This works -->
<!-- This doesn't work: -->
<ul>
{{#each Pages}}
<li>Page ID: {{Id}} <br /> Page Name: {{Name}} <br />
<ul>
{{#each Objects}}
<li>{{Type}}</li>
{{/each}}
</ul>
</li>
{{/each}}
</ul>
</div>
</div>
</script>
另外,当我刚添加:
{{Pages}}
在把手模板中,浏览器中的输出是:
[object Object],[object Object]
我不确定这是不是问题。
答案 0 :(得分:7)
大写变量被视为全局范围,您需要完全限定它们或将它们设为小写
http://emberjs.jsbin.com/UhIGevUf/1/edit
<div class="container">
<div class="row">
<h1>{{model.Title}}</h1> <!-- This works -->
<h2>{{model.Description}}</h2> <!-- This works -->
<!-- This doesn't work: -->
<ul>
{{#each page in model.Pages}}
<li>Page ID: {{page.Id}} <br /> Page Name: {{page.Name}} <br />
<ul>
{{#each obj in page.Objects}}
<li>{{obj.Type}}</li>
{{/each}}
</ul>
</li>
{{/each}}
</ul>
</div>
</div>