AngularJS orderby:将数组元素保留在顶部 [英] AngularJS orderby : keep an element of array on top

问题描述

我已经搜索过，但没有找到我的问题的答案.希望，我已经很好地搜索了！所以，这是我的问题:

I have searched and don't found an answer to my question. Hope, I've well searched ! So, this is my problem :

<div id="{{expression.comment_id.$id}}" class="comments" ng-repeat="expression in expressions| orderBy:orderProp"

所以，orderBy 效果很好，但我有一个特定的需求:id 为0"的 expression.comment_id 必须保持在最前面.

So, orderBy works great, but I have a specific need : expression.comment_id with '0' id must stay on top.

怎么能这样呢?我想我必须使用个人过滤器，但我不确定这是更有效的解决方案.如果这是一个好方法，我该如何正确实施?

How can do this ? I think I must use a personnal filter but I'm not sure this is the more efficient solution. If this is a good way, how can I implement it correctly ?

感谢您的帮助！

推荐答案

here you go made a fiddle for you: http://jsfiddle.net/sameersemna/81q9jwg9/

here you go made a fiddle for you: http://jsfiddle.net/sameersemna/81q9jwg9/

基本上你必须做一个自定义的 orderBy 过滤器:

basically you have to make a custom orderBy filter:

<ul ng-repeat="expression in expressions | orderBy:myValueFunction">

在控制器中:

$scope.myValueFunction = function(expression) {
        if(expression.comment_id == 0){
            return expression.comment_id;
        }else{
            return expression.orderProp;
        }
    }

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