ES6 angular-流星ng-table getData函数不调用

I'm trying to refactor my code to ES6. I'm using angular-meteor and ng-table. Before refactoring, the data is shown on the table. However, after refactoring to ES6 syntax, the data doesn't show anymore. This is a snippet of the refactored code:I'm trying to refactor my code to ES6. I'm usin