How to sort and filter ngTable date (milliseconds) data?

Question

I am pretty new to Angularjs need some help with sorting date in milliseconds in descending order as well as a filter for the table columns. I created a plunker here but when I key in some filter param I do not see any filtered data and the data is lost from table.

Please help me in sorting date column and doing a case insensitive filter search, below I am providing my code.

<table ng-table="tableParams" show-filter="true" class="table" >
  <tr ng-repeat="item in $data" height="10px">
    <td data-title="'Date'" filter="{ 'item[0]': 'date' }" sortable="'item[0]'">{{translate(item[0])}}</td>
    <td data-title="'Count'" filter="{ 'item[1]': 'text' }" sortable="'item[1]'">{{item[1]}}</td>
  </tr>
</table>

$scope.translate = function(value) {
    if (value == null || value == undefined)
        return value;
    var monthNames = [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ];
    var myDate = new Date( value );
    return myDate.getDate() + " " + monthNames[myDate.getMonth()] + " "+myDate.getFullYear();
}
$scope.tableParams = new ngTableParams({
    page: 1,            // show first page
    count: 10          // count per page        
}, {
    total: $scope.tasksRunDataForTable.length, // length of data
    getData: function($defer, params) {
        // use build-in angular filter
        var sortedData = params.sorting() ?
                            $filter('orderBy')($scope.tasksRunDataForTable, params.orderBy()) :
                            $scope.tasksRunDataForTable;
        var orderedData = params.filter() ?
               $filter('filter')(sortedData, params.filter()) :
               sortedData;
        params.total(orderedData.length); // set total for recalc pagination
        $defer.resolve(orderedData.slice((params.page() - 1) * params.count(), params.page() * params.count()));
    }
});

Update

I am able to get filter work on count, but no luck with date and sorting on both columns. Updated plunker

<td data-title="'Count'" filter="{ '1': 'text' }" sortable="'1'">{{item[1]}}</td>

Answer 1

Date Sorting

This is not an issue of the ngTable but how the underlying angular filter for 'OrderBy' works.

Just use valueOf()[0], valueOf()[1] respectively where 0 & 1 are the indexes for your inner array. Here is the html and there is no need to change your getData callback.

<table ng-table="tableParams" show-filter="true" class="table" >
    <tr ng-repeat="item in $data" height="10px">
        <td data-title="'Date'" filter="{ '0': 'text' }" sortable="valueOf()[0]">{{ item[0] | date: 'd MMM yyyy HH:mm' }}</td>
        <td data-title="'Count'" filter="{ '1': 'text' }" sortable="valueOf()[1]">{{ item[1] }}</td>
    </tr>
</table>

Please note that you don't need a translate for presenting your dates from milliseconds as this is supported by an other angular filter 'date'.

See also this somehow related post https://stackoverflow.com/a/15858739/61577

Date Filtering (from string)

In order to achieve filtering from date you need to use a custom "comperator" function as a third argument when filtering on the controller. Something like this will do the trick

var dateComperator = function(obj, text) {
   var valueAsText = obj + '';
    if (valueAsText.length == 13) { // must be milliseconds.
      valueAsText = $filter('date')(obj, 'd MMM yyyy HH:mm');
    } 
    return !text || (obj && valueAsText.toLowerCase().indexOf(text.toLowerCase()) > -1);
};

then on your controller getData callback:

    getData: function($defer, params) {
        // use build-in angular filter
        var sortedData = params.sorting() ?
                            $filter('orderBy')($scope.tasksRunDataForTable, params.orderBy()) :
                            $scope.tasksRunDataForTable;
        var filterInfo = params.filter();
        var comparer = (filterInfo && filterInfo['0']) ? dateComparer : undefined;
        $log.log(angular.toJson(filterInfo))
        var orderedData = filterInfo ?
               $filter('filter')(sortedData, filterInfo, comparer) :
               sortedData;
        params.total(orderedData.length); // set total for recalc pagination
        $defer.resolve(orderedData.slice((params.page() - 1) * params.count(), params.page() * params.count()));
    }

UPDATE: updated the answer to tackle the filtering issue. UPDATE 2: Updated the answer to tackle when searching with both date and count.

here is the complete plunker http://plnkr.co/edit/D2n7MdAfugXpKeKOGosL?p=preview

Hope this helps.