using part of a list in angularJS ng-repeat - angularjs

Question

I'm doing an angularJS data-binding as follows:
<div class="timeSlotWrapper">
<div class="timeSlotItem" ng-repeat="t in timeSlots" time-slot-obj="t" id ="{{t.id}}"
ng-click="timeSlotClick(cardId, $index)">{{ t.signalingTimeSlot}}</div>
</div>
the collection timeslots contain some 60 items, 30 of each belonging to one category. Lets say typeId is 0 for 30, and 1 for the other 30. I want to use ng-repeat for the first 30 only. Is it possible to do within ng-repeat or do I have to create the collection according to my need in code behind?

Answer 1

<div class="timeSlotWrapper">
<div class="timeSlotItem" ng-repeat="t in timeSlots | filter:{typeId:0}" time-slot-obj="t" id ="{{t.id}}"
ng-click="timeSlotClick(cardId, $index)">{{ t.signalingTimeSlot}}</div>
</div>

Answer 2

You can make use of angular filter. Example for same
myApp.filter('filterList', function () {
return function(id) {
if(id==1)
return id;
}
});
And in your html markup
<div class="timeSlotItem" ng-repeat="t in timeSlots | filterList:t.id" time-slot-obj="t" id ="{{t.id}}"
ng-click="timeSlotClick(cardId, $index)">{{ t.signalingTimeSlot}}</div>
UPDATE:
If 1 need not be hardcoded then a $scope object can be used in the filter:
myApp.filter('filterList', function () {
return function($scope) {
$scope.Objs.forEach(function(Obj){
if(id==$scope.Obj.id) {
return id;
}
});
}
});
and in html markup pass this object
<div class="timeSlotItem" ng-repeat="t in timeSlots | filterList:this" time-slot-obj="t" id ="{{t.id}}"
ng-click="timeSlotClick(cardId, $index)">{{ t.signalingTimeSlot}}</div>
Documentation on Angular Filters