How do I create a callback for ng-repeat orderBy?

问题

Looking for a way to get AngularJS'a ng-repeat orderBy filter to do a callback once it's done rendering...

Markup:

    <div ng-controller="MyCtrl">
    <table>
        <thead>
            <tr>
                <th ng-click="sort('name')">Name:</th>
                <th ng-click="sort('age')">Age:</th>
            </tr>
        </thead>
        <tbody>
            <tr ng-repeat="item in items | orderBy:sortColumn:reverseSort">
                <td>{{item.name}}</td>
                <td>{{item.age}}</td>
            </tr>
        </tbody>
    </table>
</div>

JS:

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

function MyCtrl($scope) {
    $scope.items = [{
        "name": "John",
            "age": 25
    }, {
        "name": "Amy",
            "age": 75
    }, {
        "name": "Sarah",
            "age": 12
    }, {
        "name": "Matt",
            "age": 55
    }, {
        "name": "Xaviour",
            "age": 2
    }];

    $scope.sortColumn = 'name';
    $scope.reverseSort = false;

    $scope.sort = function (column) {
        $scope.sortColumn = column;
        $scope.reverseSort = !$scope.reverseSort;
    };

    $scope.sortRenderFinished = function(){
        console.log('Done Rendering!');
        //Do something
    };
}

JSfiddle

As you can see.. I'd like to see something like $scope.sortRenderFinished() fire once the orderBy filter is done executing and changing the order of the table rows.

Any help would be MUCH appreciated! :-)

回答1:

As usual I was over-thinking the problem..

Just needed to create a custom sort function and manage the array manually instead of relying on the orderBy filter in the ng-repeat directive:

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

function MyCtrl($scope, $filter) {
    $scope.items = [{
        "name": "John",
            "age": 25
    }, {
        "name": "Amy",
            "age": 75
    }, {
        "name": "Sarah",
            "age": 12,
    }, {
        "name": "Matt",
            "age": 55
    }, {
        "name": "Xaviour",
            "age": 2
    }];



    $scope.addChild = function () {
        var
        matt = $scope.items[findIndexByKeyValue($scope.items, 'name', 'Matt')],
            savannah = {
                "name": "Savannah",
                    "age": 2,
                    "parent": matt
            };

        console.log('matt');
        console.log(matt);

        $scope.items.splice($scope.items.indexOf(matt) + 1, 0, savannah);
        matt.child = savannah;
        $scope.matt = matt;
        $scope.savannah = savannah;
    };

    var findIndexByKeyValue = function (obj, key, value) {
        for (var i = 0; i < obj.length; i++) {
            if (obj[i][key] == value) {
                return i;
            }
        }
        return null;
    };


    $scope.sortColumnExp = '';

    $scope.sort = function (column) {
        $scope.sortColumnExp = ($scope.sortColumnExp.indexOf('-') == 0) ? column : '-' + column;
        console.log($scope.sortColumnExp);
        if ($scope.savannah) {
            $scope.items.splice($scope.items.indexOf($scope.savannah), 1);
        }
        $scope.items = $filter('orderBy')($scope.items, $scope.sortColumnExp);
        if ($scope.savannah) {
            $scope.items.splice($scope.items.indexOf($scope.savannah.parent) + 1, 0, $scope.savannah);
        }
    };

}

Working JSFiddle for what I was trying to do... Thanks to @LcLk for the breadcrumb above..

来源：https://stackoverflow.com/questions/21270845/how-do-i-create-a-callback-for-ng-repeat-orderby