重复订单仅更改一次

我正在尝试使用Angular创建一个表，该表具有可以设置顺序的标题，到目前为止，它可以正常工作，但只设置一次顺序。

我已经使用console.log并且变量正在更改。

桌子

<table class="table table-striped table-bordered">
    <thead>
        <tr>
            <th ng-click="setOrder('iss.issueID')"> ID</th>
            <th ng-click="setOrder('iss.issueTitle')" >Issue</th>
            <th ng-click="setOrder('iss.zone')">Zone</th>
            <th ng-click="setOrder('iss.type')">Type</th>
            <th ng-click="setOrder('iss.time')">Time</th>
            <th ng-click="setOrder('iss.userID')">User ID</th>
            <th ng-click="setOrder('iss.user')">User</th>
        </tr>
    </thead>
    <tbody>
        <tr ng-repeat= "iss in issues | filter:name | orderBy:order">
            <td>{{ iss.issueID }}</td>
            <td>{{ iss.issueTitle }}</td>
            <td>{{ iss.zone }}</td>
            <td>{{ iss.type }}</td>
            <td>{{iss.time * 1000 | date:'yyyy-MM-dd HH:mm:ss '}}</td>
            <td>{{ iss.userID }}</td>
            <td>{{ iss.user }}</td>
        </tr>
   </tbody>
</table>

功能

$scope.issues = [

    <? php

         $result = mysqli_query($con, $qr);
         while ($row = mysqli_fetch_array($result)) {

             echo "{issueID: '".$row['issueID']."', 
                 user: '".$row['firstName'].' '.$row['lastName']."', 
                 userID: '".$row['userID']."',
                 issueTitle: '".$row['issue']."', 
                 issueDesc: '".$row['issueDesc']."', 
                 time: '".$row['timeReceived']."',
                 machine: '".$row['machineID'].' '.$row['manufacturer'].' '.$row['machineType']."',
                 zone: '".$row['zoneID'].' '.$row['Location'].' '.$row['Name']."',
                 type: '".$row['type']."',
                 technician: '".$row['techID']." ".$row['tfirstName']." ".$row['tlastName']."'";
             echo "},";
         }

     ?> 
];

$scope.setOrder = function (order) {
    $scope.order = order;
    console.log($scope.order = order);
};
});