angularjs - How do I code a custom ordering function in angular? -

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having 

<div class="item" data-ng-repeat="course in courses | filter:filtercourses | orderby:predicate">...

and 

$scope.predicate = function(course) {     //$scope.orderprop };

what code need put inside predicate can

  1. order same way default orderby:predicate order(not sure if makes sense)
  2. place empty course.startdate @ end of list

notes:

  • course object different properties title, startdate, code
  • $scope.orderprop contains value sort by: title, startdate, code. when startdate empty place items @ end of list still keep sorting date properly, start date "integer" later display ng-date in nicer form

thank you

answer: here's ended http://jsfiddle.net/3hz2j8j7/

orderby can accept list of predicates (a bit saying "order a, b"). first predicate ensure blank start dates go @ end, , second 1 use value of orderprop:

<div ... orderby:[nonemptystartdate, orderprop]">  $scope.nonemptystartdate = function(course) {     return course.startdate=="" ? 1 : 0; }

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