(二十三)小程序详细页赞的处理

后端api

url(r'^favor/', news.FavorView.as_view()),

class FavorModelSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.NewsFavorRecord
        fields = ['news']



class FavorView(APIView):
    authentication_classes = [UserAuthentication, ]

    def post(self, request, *args, **kwargs):

        ser = FavorModelSerializer(data=request.data)

        if not ser.is_valid():
            return Response({}, status=status.HTTP_400_BAD_REQUEST)
        news_obj = ser.validated_data.get('news')

        queryset = models.NewsFavorRecord.objects.filter(user=request.user, news=news_obj)
        exists = queryset.exists()

        if exists:
            queryset.delete()
            return Response({}, status=status.HTTP_200_OK)
        models.NewsFavorRecord.objects.create(user=request.user, news=news_obj)
        return Response({}, status=status.HTTP_201_CREATED)

小程序端

      <text wx:if="{{news.is_favor}}" class="red" bindtap="doFavor" data-news="{{news.id}}">赞</text>
      <text wx:else bindtap="doFavor" data-news="{{news.id}}">赞</text>

// js

 doFavor:function(e){
    if(!app.globalData.userinfo){
      wx.navigateTo({
        url: '/pages/auth/auth',
      })
      return
    }
    var news_id = e.currentTarget.dataset.news
    wx.request({
      url: api.FavorAPI,
      data: {
        news:news_id
      },
      header: {
        'Authorization': app.globalData.userinfo ? app.globalData.userinfo.token : null
      },
      method: 'POST',
      dataType: 'json',
      responseType: 'text',
      success: (res)=> {
        console.log(res)
        if(res.statusCode==200){
          this.setData({
            ['news.is_favor']:false
          })
        }else if(res.statusCode==201){
          this.setData({
            ['news.is_favor']: true
          })
        }else{
          wx.showToast({
            title: '请求错误',
            icon:'none'
          })
        }
      },

    })
  },