jquery - ng-repeat sorting arrow not working in javascript datatables

Question

I'm very new to AngularJs and datatables. I have a requirement to populate the data in table rows using ng-repeat. Iam able to populate the rows and enabling the sorting for the first time. When i click on the arrows to sort ascend or descend the row data wiping off.

Here is my table data

<table datatable="ng" id="example" class="display" cellspacing="0"    width="100%">
                <thead>
                    <tr>
                        <th class="col1">Campaign Name</th>
                        <th class="col4">Description</th>
                        <th class="col5">Activate/Deactivate</th>
                        <th class="col5">edit</th>
                        <!-- <th class="col5">status</th> -->
                        <!-- <th class="col5">Details</th> -->
                    </tr>
                </thead>
                <tbody >
                    <tr ng-repeat="campaign in campaignListData">
                             <td>{{campaign.campaignObject.campaignName}}</td>
                             <td>{{campaign.campaignObject.campaignMessage}}</td>
                            <td><button type="button" class="pay-amount pending" style="margin-top:-10px;margin-right:17px;width:128px;height:34px"
                            value = "{{ campaign.campaignObject.label }}" title="ACTIVATE" ng-click="updateCampaignStatus(campaign.campaignObject.id)">
                                <span style="margin-left:-10px;margin-right:17px;width:128px;height:34px">{{ campaign.campaignObject.label }}</span>
                                </button>
                            </td>
                            <td><a href="<c:url value="${contextPath}/merchant/manageCampaign/editCampaignConfiguration"/>?campaignId={{ campaign.campaignObject.id }}">
                                <img class="tableImage" style="margin-left:-8px;margin-top:-10px;" src="<c:url value="/resources/images/setting.png" />" ></a>
                            </td>
                    </tr>
                </tbody>
            </table> 

Here is my sorting javascript code

<script type="text/javascript">
    $(document).ready(function() {
        $("#noCampaignData").hide();
        //$("#example_paginate").hide();
        var rowCount = $("#example tr").length;
        console.log("Row count value is"+rowCount);
        if (rowCount >= 0) {
            console.log("Entered into Sorting");
            $("#example").dataTable({
                "pagingType" : "full_numbers",
                "order" : [ [ 2, "desc" ] ]
            });
        }
    });
</script>

I'm getting rowcount for tr is 1

I have the js file included at the bottom of the page

<script src="<c:url value="/resources/js/CampaignListController.js" />"></script>
<script src="<c:url value="/resources/js/jquery.dataTables.min.js" />"></script>

When Im loading data its fine loading with ng-repeat. But when i click on header to sort ascending or descending, rows are wiped off.

Please advise me where i'm doing wrong? I'm unable to sort the data ascending, descending and pagination is not at all working.

Sorry for my English.

Answer 1

No offense, but this is a typical mix-up of jQuery and Angular thinking, or a lack of understanding how Angular works. Here an attempt to wrap some jQuery logic into the angular digest loop. Read a great answer to the question “Thinking in AngularJS” if I have a jQuery background?

You cannot ever combine $(document).ready(function() { and Angular. In fact, you can be very sure that your ready() is executed long before Angular has finished its ng-repeat business. And thats why you always get 1 for the row count (the header) and why the rows are dissappearing when you click on the headers. At the time you get row count there is not inserted any rows, and at the time you instantiate the dataTable(), no rows have been inserted.

You can use $timeout to force delay of the code, or force it into the next digest loop :

$scope.initDataTable = function() {
   $timeout(function() {
      $("#noCampaignData").hide();
      //$("#example_paginate").hide();
      var rowCount = $("#example tr").length;
      console.log("Row count value is"+rowCount);
      if (rowCount >= 0) {
         console.log("Entered into Sorting");
         $("#example").dataTable({
            "pagingType" : "full_numbers",
            "order" : [ [ 2, "desc" ] ]
         });
      }
   }, 200)
}

or create a directive that instantiates the dataTable once the data is populated by ng-repeat, as demonstrated in multiple answers for ng-repeat finish event :

.directive('repeatDone', function() {
    return function(scope, element, attrs) {
        if (scope.$last) { // all are rendered
            scope.$eval(attrs.repeatDone);
        }
    }
})

...

<tr ng-repeat="campaign in campaignListData" repeat-done="initDataTable">

...

$scope.initDataTable = function() {
      $("#noCampaignData").hide();
      $("#example").dataTable({
         ...
      });
}

Hope this will help you out.