在文本框VueJS 2中键入时搜索列表

Question

我有一个数组用户列表.我想根据顶部的搜索框(名称)过滤它们.我看到VueJS 1中有过滤器.但是VuesJS 2中没有过滤器.如何在VueJS 2中实现这一点

<input type="text" v-model="search"/>   
<div class="row profile" v-for="customer in customers">
 <div class="col-md-offset-1 col-md-3"><img :src="customer.profile_pic" class="profile-pic" /></div>
 <div class="col-md-8"><h4 class="name">{{customer.name}}</h4></div>
</div>
<script>
    data: function () {
      return{
        search: '',
        customers: [
          { id: '1', name: 'user 1', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'ab@gmail.com', phone:'+91959657248', unread:'0' },
          { id: '2', name: 'user 2', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'abcd@gmail.com', phone:'+919456664023', unread:'0' },
          { id: '3', name: 'user 3', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'test@gmail.com', phone:'+919566565065', unread:'0' },
          { id: '4', name: 'user 4', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'sample@gmail.com', phone:'+916466004566', unread:'0' }
        ]
      }
    }
</script>

Answer 1

我通过将我的属性"array"与数据元素和带有过滤元素的计算属性(数组)一起完成此操作.HTML呈现已过滤的元素.我有一个绑定到文本框的属性.为简单起见,这样的事情:

data: function () {
      return{
        search: '',
        customers: [
          { id: '1', name: 'user 1', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'ab@gmail.com', phone:'+91959657248', unread:'0' },
          { id: '2', name: 'user 2', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'abcd@gmail.com', phone:'+919456664023', unread:'0' },
          { id: '3', name: 'user 3', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'test@gmail.com', phone:'+919566565065', unread:'0' },
          { id: '4', name: 'user 4', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'sample@gmail.com', phone:'+916466004566', unread:'0' }
        ]
},
computed:
{
    filteredCustomers:function()
    {
        var self=this;
        return this.customers.filter(function(cust){return cust.name.toLowerCase().indexOf(self.search.toLowerCase())>=0;});
    }
}

将HTML绑定到filteredCustomers.您现在应该根据您在搜索上键入的内容来设置反应式HTML.这个"过滤器"方法是数组的原生JavaScript,我将两个值都设置为低位,使其不区分大小写.

这是一个小提琴的工作示例:https: //jsfiddle.net/dkmmhf5y/1/

编辑:在计算属性中添加小提琴和代码更正

Answer 2

过滤器已在vuejs 2中删除.正如@ azamat-sharapov所建议的那样,您可以使用以下3种方法之一来获得可重用的过滤器:

我怎么能在2.0中做到这一点？

• 混入
• 用方法分开模块
• 具有计算螺旋功能的独立模块

vuejs 2中过滤器的简单实现可以使用计算属性,该属性可以调用方法来获取过滤列表.在该方法中,您可以传递列表,查询,它可以返回已过滤的列表.看看下面的代码和工作演示在这里.以下是通用功能,可以移动到mixin或模块,并可以在多个组件中重复使用.

var vm = new Vue({
  el: '#demo',
  data: {
    customers: [
          { id: '1', name: 'user 1', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'ab@gmail.com', phone:'+91959657248', unread:'0' },
          { id: '2', name: 'user 2', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'abcd@gmail.com', phone:'+919456664023', unread:'0' },
          { id: '3', name: 'user 3', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'test@gmail.com', phone:'+919566565065', unread:'0' },
          { id: '4', name: 'user 4', profile_pic: 'https://i.stack.imgur.com/CE5lz.png', email:'sample@gmail.com', phone:'+916466004566', unread:'0' }
        ],
    columns: {
      id : {
        displayname : "id",
        sortorder : 1
      },
      name : {
        displayname : "name",
        sortorder : 1
      },
      email : {
        displayname : "email",
        sortorder : 1
      }
    },
    query: '',
   },
  computed: {
    tableFilter: function () {
        return this.findBy(this.customers, this.query, 'name')
    }
  },
  methods: {
    findBy: function (list, value, column) {
      return list.filter(function (item) {
        return item[column].includes(value)
      })
    }
  }
})