javascript – ng-repeat过滤器类似于Meteor Blaze / Spacebars中的功能

我来自AngularJS背景,最近开始学习Meteor.

在AngularJS中,我可能有类似的东西：

<div ng-repeat="person in persons | filter:search">
   <h4>{{person.name}}</h4>
   <b>{{person.age}}</b>
</div>

搜索对象可以绑定(双向绑定)到HTML文本框.只要文本框发生更改,过滤器就会自动更新.

如何在流星中这样做？

解决方法:

我不熟悉AngularJS,但这里有一个如何使用Meteor完成此任务的示例.

此示例显示了一个人员列表,以及可用于按年龄过滤显示列表的HTML编号输入.

客户端/视图/人/ persons.html

<template name="persons">
  <input class="age" type="number" value="{{filter}}">
  <ul>
    {{#each personsFiltered}}
      {{> person}}
    {{/each}}
  </ul>
</template>

<template name="person">
  <li>{{name}} is {{age}}</li>
</template>

客户端/视图/人/ persons.js

// dummy collection for testing purpose, living only in the client
// (not backed by a real server-side persistent collection)
Persons=new Mongo.Collection(null);

// dummy dataset
Persons.insert({
  name:"Alice",
  age:25
});
Persons.insert({
  name:"Bob",
  age:35
});
Persons.insert({
  name:"Charlie",
  age:18
});

// on create, initialize our filter as a ReactiveVar
// need to meteor add reactive-var to use this
Template.persons.created=function(){
  this.filter=new ReactiveVar(20);
};

Template.persons.helpers({
  // value of the filter to initialize the HTML input
  filter:function(){
    return Template.instance().filter.get();
  },
  // reactively return the persons who are older than the input value
  personsFiltered:function(){
    return Persons.find({
      age:{
        $gt:Template.instance().filter.get()
      }
    });
  }
});

// bind the value of the input to the underlying filter
Template.persons.events({
  "input .age":function(event,template){
    var currentValue=template.find(".age").valueAsNumber;
    template.filter.set(currentValue);
  }
});

标签：javascript,meteor,meteor-blaze,spacebars
来源： https://codeday.me/bug/20190628/1320340.html