用空格键遍历数组 [英] Iterating through an array with Spacebars
问题描述
这是我最后一个问题的第 2 部分.感谢一些乐于助人的人，我现在有一个看起来像这样的文档:
This is somewhat of a part 2 to my last question. Thanks to some helpful folks, I now have a document that looks like this:
{ "_id" : "dndsZhRgbPK24n5LD", "createdAt" : ISODate("2014-11-26T16:28:02.655Z"), "data" : { "cat1" : 493.6, "cat2" : 740.4 }, "owner" : "GiWCb8jXbPfzyc5ZF", "text" : "asdf" }
具体来说，我想从空格键中 data 的每个属性中提取值并对其进行迭代以创建一个表 - 我知道对象 data 但数量可能会有所不同.是的，我知道这已经之前问过，但似乎没有人能够给出令人满意的答案.但作为最终结果，我想连续显示整个文档，就像这样
Specifically, I want to extract the value from each property of data in Spacebars and iterate over it to create a table - and I know the number of fields in object data but the number can vary. Yes, I know this has been asked before but nobody has seemed to be able to give a satisfactory answer that works. But as a final result I would like to display the whole document in a row, like this
<tbody>
<tr>
<td>493.6</td>
<td>740.4</td>
<td>asdf</td>
</tbody>
在此先感谢您的帮助.
推荐答案
以下是完整的工作示例:
Here's complete working example:
Cats = new Mongo.Collection(null);
Meteor.startup(function() {
Cats.insert({
data: {
cat1: 100,
cat2: 200
},
text: 'cat1'
});
Cats.insert({
data: {
cat1: 300,
cat2: 400,
cat3: 500
},
text: 'cat2'
});
});
Template.cats.helpers({
cats: function() {
return Cats.find();
},
// Returns an array containg numbers from a cat's data values AND the cat's
// text. For example if the current cat (this) was:
// {text: 'meow', data: {cat1: 100, cat2: 300}}, columns should return:
// [100, 200, 'meow'].
columns: function() {
// The current context (this) is a cat document. First we'll extract an
// array of numbers from this.data using underscore's values function:
var result = _.values(this.data);
// result should now look like [100, 200] (using the example above). Next we
// will append this.text to the end of the result:
result.push(this.text);
// Return the result - it shold now look like: [100, 200, 'meow'].
return result;
}
});
<body>
{{> cats}}
</body>
<template name='cats'>
<table>
{{#each cats}}
<tr>
{{#each columns}}
<td>{{this}}</td>
{{/each}}
</tr>
{{/each}}
</table>
</template>
这篇关于用空格键遍历数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
