<div>{{parent.name}}</div>
<div ng-repeat="child in children | filter: {id: {{parent.id}}}">
{{child.name}}
</div>

app.controller("parentCtrl", function($scope, $location, $routeParams, $http) {
  //Get parent
  $scope.children = [];
    $http.get('/children').success(function(children) {
    $scope.loaded = true;
    $scope.children = children;
  });
});