? ?? ?? WeChat ???? ??? ???? ?? ??? ?????. ???? ? ??? ???? ?? ???? ????? ???????. ???? ?? ??????

Scenes

• ?? ????? 52???? ???? ???, ? ? 13???? ID? ???? ???, ??? 39???? ??? ??? ?????. ? 39? ????? WeChat ????? ??? ??? ??? ??? ???? ?????.

• ??? ??? ?? ??? ?? ??? ?? ??? ??? ??.

???? ?? ? ??

???? ??? ??? ???? ??? ?? ?? ???? ???? ?? ???? ????? ?????. ??? ???? ?? ???? ?????.

PHP? laravel ?????? ???? ???? ?? laravel ?????? http ????? ???? ???.

HTTP ????? ??????? ???? HTTP ??? ????? ??? ????? ?????. ?? ?? Laravel?? ????? ??? ??? ???? ????? ?????. ???? ???? ?? ?? ????? ???? ??? ???? ?????, ???? ??? ?? ????? ??? ?? ????? ?????. ?? ?? ??? ????? ???? ??? ??? ??? ?? ????. CORS ????? ????? ???? ?? ??? ??? ?? ??? ???? ??? ???. ??.

???? ?? WeChat ???? ??? ????? ?? ???? ????? ???? ???? ????. ??? Page ????? ?? ????? ??? ? ????.

onLoad? ?? ???? ? ?? ???? onShow? ?? ???? ?? ??? ? ? ?????(?: ???? ???? ???? ???).

onLoad ?? onShow ?? ???? ???? ??? ????, ???? ???? ??? ???? ????, ??? ??? ??? ???? ?????.

//orderDetail.js
onShow: function () {
  let that = this;
  //身份校驗
  service.identityCheck(() => {
     //跳轉(zhuǎn)到登錄頁
     wx.redirectTo({
      url: "/pages/common/login/login"
     });
    }, () => {  
     //獲取頁面數(shù)據(jù)等等   
     that.getDetail(this.orderId);
     ...
    }
  );
 },

?, ?? ???? ??? ???? ??, ???? ??? ?? ????? ???. ?? ???? ????? ?? ? ????(? ? ??? ?? ?????):

//filter.js
function identityFilter(pageObj){
  if(pageObj.onShow){
    let _onShow = pageObj.onShow;
    pageObj.onShow = function(){
      service.identityCheck(()=>{
        //跳轉(zhuǎn)到登錄頁
        wx.redirectTo({
          url: "/pages/common/login/login"
        });
      },()=>{
        //獲取頁面實例，防止this劫持
        let currentInstance = getPageInstance();
        _onShow.call(currentInstance);
      });
    }
  }
  return pageObj;
}

function getPageInstance(){
  var pages = getCurrentPages();
  return pages[pages.length - 1];
}

exports.identityFilter = identityFilter;

filter.js用以提供過濾器方法，除了現(xiàn)有的用戶身份攔截，后續(xù)如果需要其他攔截，可以在這個文件增加。然后，在需要用戶身份攔截的小程序頁面代碼里，用filter.identityFilter ?? ?????:

//orderDetail.js
let filter = require('filter.js');
Page(filter.identityFilter({
  ...
  onShow: function () {
    //獲取頁面數(shù)據(jù)等等
    this.getDetail(this.orderId);
    //...
  },
  ...
}));

???? ?? Promise ??

? ????? ???? ????, ???? ??? ???? ???(?, ? ??? service.identityCheck)? ?? ?????. ?? ? ???? ??? ?????? ??? ??? ????? ???. ?, app.js? onLaunch ????? ?????.

? ?? ???? ???? ??????? ????? ???? ??? ???? ?? ?? ??? ??? ?????. ??? ??? ID? ?? ?? ??? ?? ?? ???? ??? ???? ????? ??? ????.

Promise? ??? ??? ?? ??? ???? ? ?? ??? ?? ??? ??? ????. ???, ??? ??? ???????:

//app.js
App({
  onLaunch:function(){
    let p = new Promise(function(resolve,reject){
      service.identityCheck(resolve,reject);
    });
    this.globalData.promise = p; 
  },
  ...
  globalData: {
    promise:null,
  }  
});

//filter.js
const appData = getApp().globalData;
function identityFilter(pageObj){
  if(pageObj.onShow){
    let _onShow = pageObj.onShow;
    pageObj.onShow = function(){
      //改動點
      appData.promise.then(()=>{
        //跳轉(zhuǎn)到登錄頁
        wx.redirectTo({
          url: "/pages/common/login/login"
        });
      },()=>{
        //獲取頁面實例，防止this劫持
        let currentInstance = getPageInstance();
        _onShow.call(currentInstance);
      });
    }
  }
  return pageObj;
}

Summary

????? ?? ???? ???? ?? ??? ID ????? ????? ??? laravel? http ?????? ?????:

• ? ???? ??? ?? ? ??? ???? ????.

• ??? ?? ??? ?????? ?? ????? ??? ???? ???? ????. ??? ID? ?? ?? ??? ??? ???? ? 1?? ??? ?? ?? ???? ???? ?? ???? 1? ?? ??? ???? ?????. ??? ?? ???? ???. ?? ?? ? ?? ???? ? ???? ?????.

? ??? WeChat ??? ??? ?? ??? ????? ?? ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!