// api request
 request(url, params) {
 return new Promise((resolve, reject) => {
 wx.request({
 url: baseUrl + url,
 method: 'POST',
 data: params,
 success(res) {
 console.log(res.data)
 resolve(res.data)
 },
 fail(res) {
 console.log(res)
 reject(res)
 }
 })
 })
 },
 
 // api
 getHomeLayout(params) {
 return this.request('/wechat/home/getHomeLayout', params)
 },