ng-model and ng-option for the category dropdown has bugs
ng-model and ng-option for the category dropdown has bugs

TIY-DC-FEE-2016-Mar/popular-science,HaWyanHa/popular-science,TIY-DC-FEE-2016-Mar/popular-science,mattgrosso/popular-science,mattgrosso/popular-science,HaWyanHa/popular-science