微信小程序云开发-数据库查询渲染

1、集合(表)创建

建议创建表时最好带上“_openid”字段

也可以json导入和表格导入

//json格式
{"name":"大神",_openid:"",,"num":0.0,"content":"内容"},
{"name":"大神2",_openid:"","num":0.0,"content":"内容"},
{"name":"大神3",_openid:"","num":0.0,"content":"内容"},
{"name":"大神4",_openid:"","num":0.0,"content":"内容"},
{"name":"大神5",_openid:"","num":0.0,"content":"内容"},
{"name":"大神6",_openid:"","num":0.0,"content":"内容"},
{"name":"大神7",_openid:"","num":0.0,"content":"内容"},
{"name":"大神8",_openid:"","num":0.0,"content":"内容"},
{"name":"大神9",_openid:"","num":0.0,"content":"内容"},
{"name":"大神10",_openid:"","num":0.0,"content":"内容"},
{"name":"大神11",_openid:"","num":0.0,"content":"内容"}

2、权限设置

3、查询接口

页面的index.js文件

//index.js
const app = getApp()

Page({
  data: {
    formData:[   //定义页面渲染变量
    {_id: "ko", _openid: "", content: "内容", name: "大神", num: 0},
    {_id: "ko", _openid: "", content: "内容", name: "大神", num: 0}
    ]
  },
  onLoad: function() {
    const db = wx.cloud.database();
    db.collection('formData').where({
      _openid: ""     //查询条件
    }).get().then(res => {//formData是数据库里面集合的名称
      console.log(res); //如果更新数据成功则输出成功信息
      var that = this;
      that.setData({
        formData: res.data  //数据赋值
      });
      console.log(res.data);
    }).catch(err => {
      console.log(err); //如果更新数据失败则输出失败信息
    })
  },
})

4、页面数据渲染

页面index.wxml文件

	
	
		
			{{item.name}}\n
		
		
	

更多内容可参考：https://www.w3cschool.cn/weixinapp/weixinapp-1giq2zgj.html