小编Ser*_*nal的帖子

import { Component } from '@angular/core';
import { IonicPage,  NavParams, ViewController } from 'ionic-angular';
import {AngularFireDatabase, FirebaseListObservable} from 'angularfire2/database';
import { Observable} from 'rxjs';
import { Response } from '@angular/http';

@IonicPage()
@Component({
  selector: 'page-modal-groups',
  templateUrl: 'modal-groups.html'
})
export class ModalGroupsPage {

  groups: FirebaseListObservable<any>;

  constructor(public navParams: NavParams,
    public viewCtrl:ViewController,
    public afDatabase: AngularFireDatabase) {
  }

  getItems = (ev: any) : Observable<Response> =>  {
    
    this.groups =  this.afDatabase.list('/Groups', {
       query:{
         orderByChild: 'namelower',
         startAt: (ev.target.value),
         endAt: (ev.target.value + '\uf8ff')
       }
      } …