pk8f3pmu2/miniprogram/pages/main/my_shixun/my_shixun.js

const app = getApp();
Component({
  properties: {

  },

  data: {
    shixuns:[]
  },
  pageLifetimes: {
    show(){
      this.refresh();
    }
  },
  attached(){
    this.options = {page:1, per_page:16};
    this.refresh();
  },
  methods: {
    refresh(){
      app.syncUser()
        .then(res => {
          if (res.user.user_id != this.user_id) {
            if(res.user_id==2)
              this.setData({shixuns:[]})
            else
              this.pullShixuns({ refresh: 1 })
            this.user_id = res.user.user_id;
          }
        })
    },
    pullShixuns({refresh=0}={}){
      if(refresh){
        if(refresh==1){
          this.options.page = 1;
          var { options } = this;
        }else if(refresh==2){
          var {page, per_page} = this.options;
          var options = {page:1, per_page: page*per_page};
        }
      }else{
        this.options.page++;
        var {options} = this;
      }
      return app.api("users.shixuns")(options).then(({shixuns})=>{
        if (!refresh)
          shixuns = this.data.shixuns.concat(shixuns);
        this.setData({ shixuns });
      }).catch(e=>{
        this.setData({shixuns:[]});
      })
    },
    onPullDownRefresh(){
      this.pullShixuns({refresh:2});
    },
    onReachBottom(){
      this.pullShixuns({refresh:0});
    }
  }
})