如何“被追踪”正确地添加到ngRepeat

我有这个网站如何“被追踪”正确地添加到ngRepeat

<ion-item ng-repeat="item in ::itemsToShow = extensionItems | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)"> 
    ...details... 
</ion-item>

我找不出正确的方式来增加track by:item._id，我总是得到这个错误：

Syntax Error: Token 'track' is an unexpected token at column 30 of the expression [itemsToShow = extensionItems track by:_id |...

我尝试：

<ion-item ng-repeat="item in ::itemsToShow = extensionItems track by:item._id | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)"> 

<ion-item ng-repeat="item in ::itemsToShow = extensionItems track by:_id | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)"> 

<ion-item ng-repeat="item in ::itemsToShow = extensionItems | orderBy:'distance' track by:_id" class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)"> 

<ion-item ng-repeat="item in ::itemsToShow track by:_id = extensionItems | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)">

使用_id和item._id也试过，我总是得到同样的错误（当然不同的栏目）。我应该怎样或在哪里写track by？

编辑：角版本1.4.3

编辑2：JSON数据有这样的结构

_id: "000000426" 
_rev: "1-5003008fcf25b8f130233b944bb761c9" 
someText: "<p class="bodytext ">Something for you.</p>" 
name : "You-Shop" 
homepage : "http://www.youshop.com" 
id: 426

来源

2016-11-16 distante

什么是角度版本？ – Sajeetharan

@Sajeetharan我将版本添加到我的文章，它是1.4.3 – distante

你只是错过了事实track by必须不跟一个冒号（:）...

来源

2016-11-16 16:33:08 MarcoS

奥赫！很简单... – distante

`track by` MUST be the final statement in a ng-repeat.

来源

2016-11-16 16:35:57

如何“被追踪”正确地添加到ngRepeat

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