Grouping objects with AngularJS -


i have bunch of objects in array , trying figure out how group them within angular repeater. example want group fruit items parenttag key tag key of parent. fruit has tag of 1 , apple has parent tag value of 1, meaning apple grouped fruit.

so using array...

[ {     "code":"fruit",     "tag":1 }, {     "code":"apple",     "tag":2,     "parenttag":1 }, {     "code":"vegetable",     "tag":3 }, {     "code":"meat",     "tag":4 }, {     "code":"banana",     "tag":5,     "parenttag":1 }, {     "code":"carrot",     "tag":6,     "parenttag":3 }, {     "code":"chicken",     "tag":7,     "parenttag":4 } ] 

i trying group objects this...

fruit

  • apple
  • banana

vegetable

  • carrot

meat

  • chicken

so far have repeater displays objects...

<div ng-repeat="product in products"> {{code}} <span ng-if="product.tag != null">{{product.tag}}</span> <span ng-if="product.parenttag > null">{{product.parenttag}}</span> </div> 

but don't know how use groupby in case. ideas?

please see demo below

var app = angular.module('app', []);    app.controller('homectrl', function($scope) {      $scope.products = [{      "code": "fruit",      "tag": 1    }, {      "code": "apple",      "tag": 2,      "parenttag": 1    }, {      "code": "vegetable",      "tag": 3    }, {      "code": "meat",      "tag": 4    }, {      "code": "banana",      "tag": 5,      "parenttag": 1    }, {      "code": "carrot",      "tag": 6,      "parenttag": 3    }, {      "code": "chicken",      "tag": 7,      "parenttag": 4    }];      });
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>    <body>    <div ng-app="app">      <div ng-controller="homectrl">        <div ng-repeat="product in products | filter :{parenttag:'!'}">          <h3>{{product.code}}</h3>          <div ng-repeat="subproduct in products | filter :{parenttag:product.tag}">            <span>{{subproduct.code}}</span>            <span>{{subproduct.tag}}</span>            <span>{{subproduct.parenttag}}</span>          </div>            </div>      </div>  </body>


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