user2402107 user2402107 - 1 year ago 111
Javascript Question

Using a Custom Filter in AngularJs

I am relatively new to AngularJs and I came across a problem when using OrderBy: in regards to sorting objects, so I borrowed a custom filter to sort objects but I am not understanding what the correct syntax to use this Filter appropriately as it wont sort by the Key in the object I want it to:


<tbody ng-repeat="(field, profile) in currentSample.dsProfile | orderByObject:'profile[display-name]' track by $index">
<tr ng-style="$index % 2 === 0 && {'background-color': '#ffffff'} ||
$index % 2 === 1 && {'background-color': '#f9f9f9'}">
<td style="width: 19%; margin: 2px; padding: 0px;"
ng-style="profile['shown-in-details'] == true && {'background-color': 'gold'} ||
profile['shown-in-details'] == false && {'background-color': 'transparent'}">
<span class="btn-property"
ng-click="showInGenericDetails(currentSample, field)"

jsonenter image description here


app.filter('orderByObject', function() {
return function(items, field, reverse) {
var filtered = [];
angular.forEach(items, function(item) {
filtered.sort(function (a, b) {
return (a[field] > b[field] ? 1 : -1);
if(reverse) filtered.reverse();
return filtered;

without filter

<table id="data-sources-table" class="table drag-drop">
<tbody ng-repeat="(field, profile) in currentSchema.sProfile | orderBy:PROPERTY track by $index">
<tr ng-style="$index %2 === 0 && {'background-color': '#ffffff'} ||
$index %2 === 1 && {'background-color': '#f9f9f9'}">
<td style="width: 180px">
<span class="btn-property">

Answer Source

Since you can't use orderBy directly because this filter needs to filter a collection, you should parse your items to a collection, something like this:

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

app.controller('mainCtrl', function($scope) {
  var testObj = {  

  $scope.testArray = [];
  Object.keys(testObj).forEach(function(key) {
  // Now you can use $scope.testArray as a normal array in your view.
<!DOCTYPE html>
<html ng-app="app">

  <script src=""></script>

<body ng-controller="mainCtrl">
    <li ng-repeat="obj in testArray | orderBy: title: reverse" ng-bind="obj.title"></li>
  <button type="button" ng-model="reverse" ng-click="reverse = !reverse">Reverse order</button>


Note: Doing this way, you just need to parse your objects to array once, instead of doing this everytime when needs to sort.


I hope it helps!


I noticed you're using this construction:

ng-style="$index % 2 === 0 && {'background-color': '#ffffff'} || $index % 2 === 1 && {'background-color': '#f9f9f9'}"

You can simplify your life simply using the native special-properties, then you can have something like this:

ng-style="$even && {'background-color': '#ffffff'} || $odd && {'background-color': '#f9f9f9'}"

Note: Change your ng-repeat to your <tr> tag.

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