流星火焰通过数组索引选择一个特定的项目 [英] Meteor blaze select a specific item by the array index

问题描述

有没有办法在流星火焰中访问每个块助手中的数组索引?

Is there a way to access array index inside each block helper in meteor blaze?

我正在寻找类似的东西.

I am looking for something like this.

{{#each myarray}}
    {{this.arrayIndex3}}
{{/each}}

推荐答案

恐怕还没有一种标准的方法，但是您可以编写一个将数组映射到索引/值对列表的助手.并对其进行迭代以显示您想要的内容.

I'm afraid there is not yet a standard way to do this, however you can write a helper that maps your array to a list of index / value pairs and iterate over it to display what you want.

JS

Template.myTemplate.helpers({
  myArrayWithIndex: function(){
    return _.map(this.myArray,function(value,index){
      return {
        index:index,
        value:value
      };
    });
  }
});

HTML

<template name="myTemplate">
  {{#each myArrayWithIndex}}
    myArray[{{index}}] == {{value}}
  {{/each}}
</template>

您还可以定义自己的名为{{#eachWithIndex}}的块帮助程序，以自动执行此过程.

You could also define your own block helper called {{#eachWithIndex}} that would automate this process.

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