点击类别链接时，项目的筛选器列表 [英] filter list of items when clicking category link

问题描述

我有一个项目为NG重复列表。每个项目包含一个链接标题和链接类别的div。当一个类别点击，我要过滤的项目的列表，因此，它仅示出了属于该类别的项目。我怎样才能做到这一点？

I have a list of items with "ng-repeat". Each item contains a div with a link title and link category. When clicking on a category, I want to filter the list of items, so that it only shows the items belonging to that category. how can I achieve that?

到目前为止，我有一个项目列表：

So far I have a list of items:

  <div class="link_line" ng-repeat="link in links | filter: ? ">
    <div class="title"><a href="{{link.url}}" target="_blank">{{link.title}}</a></div>
    <div class="category_label" ng-click="filterCategory(link)>{{ link.category }}</div>
  </div>

和在控制器我有一个函数filterCategory，它显示了与链路类别警报。和我有过滤器？在这里我想过滤器的值有来。 THS是控制器的功能：

And in the controller I have a function "filterCategory" which shows an alert with the link category. And I have the "filter: ?" where I guess the value of the filter has to come. Ths is the controller function:

  $scope.filterCategory = (link) ->
    alert(link.category)

不知道如何进行呢？谢谢！

Any idea how to proceed? Thanks!

推荐答案

您可以创建用于过滤功能控制器的范围对象，并把它传递给过滤器前$ p中$ pssion NG-重复

You can create an object on your controller's scope intended for filtering and pass it to the filter expression in ng-repeat

var app = angular.module('app', []);

app.controller('main', function($scope) {
    $scope.filters = { };

    $scope.links = [
        {name: 'Apple', category: 'Fruit'},
        {name: 'Pear', category: 'Fruit'},
        {name: 'Almond', category: 'Nut'},
        {name: 'Mango', category: 'Fruit'},
        {name: 'Cashew', category: 'Nut'}
    ];
});

所以现在我们有一个过滤器对象连接到的范围。如果它获得类别的一个键，过滤器前pression会根据是否自动过滤的对象他们不具有类别的关键，它相匹配。

So now we have a filters object attached to the scope. If it gets a key of category, the filter expression will automatically filter the objects according to whether or not they have a key of category and it matches.

有关详细信息，看过滤文档的参数一节。

For more details, look at the "Parameters" section of the filter docs.

所以你的HTML可能看起来像：

So your HTML could look like:

<div class="link_line" ng-repeat="link in links | filter:filters">
    <div class="title"><a href="{{link.url}}" target="_blank">{{link.title}}</a></div>
    <div class="category_label" ng-click="filters.category = link.category">{{ link.category }}</div>
</div>

下面是这个动作快速小提琴。

这篇关于点击类别链接时，项目的筛选器列表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！