AngularJS $filter in controller with or condition for same attribute

Question

controller:

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

myApp.controller('myCtrl', ['$scope', '$filter', function($scope, $filter){

    $scope.tickets = [
                      {title : 'ticket1', assignee : {id:'pratap', name: 'PRATAP'}},
                      {title : 'ticket2', assignee : null},
                      {title : 'ticket3', assignee : {id:'ak', name: 'AK'}}
                      ];    

    $scope.defaultOption = 1;
    $scope.options = [
                      {id:1, name : 'MY TICKETS'},
                      {id:2, name : 'OTHERS TICKET'}
                      ];

    $scope.filteredTicket = [];

    $scope.filterData = function(criteria) {
        if (criteria == 1) {
            $scope.filteredTicket = $filter('filter')($scope.tickets, {assignee: {id:'pratap'}});
        } else {
            $scope.filteredTicket = $filter('filter')($scope.tickets, {assignee: null, assignee: {id:'ak'}});
            console.log($scope.filteredTicket);
        }


    };

    $scope.filterData($scope.defaultOption);

}]);

HTML:

<div ng-controller="myCtrl">
<div>Current User: pratap</div>
<div>
    FILTER: <select ng-model="defaultOption" ng-change="filterData(defaultOption)" ng-options="option.id as option.name for option in options"></select>
</div>
    <div>
        <h1>Tickets</h1>
        <ul>
            <li ng-repeat="ticket in filteredTicket">{{ticket.title}}</li>
        </ul>
    </div>  
</div>  

I would like to know if it is possible to use same object attribute to form or condition in $filter, something like below

$scope.filteredTicket = $filter('filter')($scope.tickets, {assignee: null, assignee: {id:'ak'}});

so that I get both object which has assignee:null and assignee:'ak'. If I select OTHERS TICKETS I need to dispplay ticket2 and ticket3, but as of now I am getting only ticket3.

Can some one please help??

Created-Plunker-Here

Answer 1

You can add a function in filter's expression:

$scope.filteredTicket = $filter('filter')($scope.tickets, function(value){
        return value.assignee === null || value.assignee.id === 'ak';
});

Plunkr