firebase query 回來資料反轉時間序（還未測）

https://github.com/angular/angularfire2/issues/283

ericel commented on 20 Jan • edited

In my case I had a field in the datebase called createdAt (createdAt: firebase.database.ServerValue.TIMESTAMP)
To retrieve I simply ask my list to query order by child

this.postList = this.af.database.list('post',  {
      query: {
        orderByChild: 'createdAt'
      }
    });

getPost() {
     return this.postList.map(posts => {
         return posts.reverse();
     });