流星列表项目计数(Meteor List item count)

编程入门行业动态更新时间:2024-10-26 18:24:21

我是Meteor和MongoDB的新手。我只是尝试将任务列表打印到表中，并希望获取数据库中每个任务的顺序。如果任务被删除，那么它将被重新排序。我知道这可能是一个两部分问题。

我已经能够使用以下方法获取集合中的项目总数：

Template.task.helpers({
  taskCount() {
    return Tasks.find().count(this._id)
  }
});
 
 我想知道我是否走在正确的道路上，或者是否有人建议如何实现这一目标。 
I am fairly new to Meteor and MongoDB. I am simply trying to print a task list to a table and would like to grab the order of each task in the DB. If a task is deleted then it would be reordered. I know this may be a two part question.  
I have been able to grab the total number of items in the collection using:  
Template.task.helpers({
  taskCount() {
    return Tasks.find().count(this._id)
  }
});
 
I am wondering if I am on the right path or if someone has a suggestion about how this could be accomplished. 
                最满意答案
                
                    
                         Blaze中内置了一个@index辅助函数，它返回当前项的基于零的索引：  
 .html文件  
<ul>
{{#each tasks}}
    <li>{{plus1 @index}}. {{title}}</li>
{{/each}}
</ul>
 
 .js文件  
Template.task.helpers({
  plus1(index) {
    return index + 1;
  }
});
There's a @index helper function built into Blaze that returns the zero based index for the current item: 
.html file 
<ul>
{{#each tasks}}
    <li>{{plus1 @index}}. {{title}}</li>
{{/each}}
</ul>
 
.js file 
Template.task.helpers({
  plus1(index) {
    return index + 1;
  }
});