micjoyce / wechat-mina-ddp

This is wrap meteor ddp for wechat mina app.

Warning(Experimental)

This is just a pilot project, please used with caution in production

Wrap Meteor DDP for wechat-mina(微信小程序)

inspired by react-native-meteor

Meteor-like methods for wechat-mina

example for ddp test wechat-mina-ddp-example

Todos

Local cache for mimimongo

Support meteor-streamer

How to use meteor-streamer for wechat-mina

You must add meteor-streamer to your meteor project

cd wxMeteor  // Your meteor project
meteor add meteor-streamer

Create streamer at server

cd wxMeteor/server
touch streamer.js
vi streamer.js

Write a streamer

msgStreamer = new Meteor.Streamer('message');

msgStreamer.allowRead('all');
msgStreamer.allowWrite('all');


Meteor.startup(function(){
  Meteor.setInterval(function(){
    msgStreamer.emit("message", {msg: "hello"});
  }, 1000);
});

Use it At wx-mina

// Meteor streamer
var Streamer = require('./meteor/stream/Streamer');
wx.Streamer = Streamer;

var msgStreamer = new Streamer("message");
wx.msgStreamer = msgStreamer;
msgStreamer.on('message', function(msg) {
  console.log(msg);
});

Then You wxapp will get a message for per second

API

Meteor DDP connection

Meteor.connect(url, options)

Connect to a DDP server. You only have to do this once in your app.

//app.js
App({
  onLaunch: function () {
    //调用API从本地缓存中获取数据
    var logs = wx.getStorageSync('logs') || []
    logs.unshift(Date.now())
    wx.setStorageSync('logs', logs);

    // User Meteor.connect(endpoint, options);
    var Meteor = require('./meteor/Meteor')
    var _ = Meteor.underscore;
    Meteor.connect('ws://localhost:3000/websocket');
    wx.Meteor = Meteor;
  },
  getUserInfo:function(cb){
    var that = this
    if(this.globalData.userInfo){
      typeof cb == "function" && cb(this.globalData.userInfo)
    }else{
      //调用登录接口
      wx.login({
        success: function () {
          wx.getUserInfo({
            success: function (res) {
              that.globalData.userInfo = res.userInfo
              typeof cb == "function" && cb(that.globalData.userInfo)
            }
          })
        }
      })
    }
  },
  globalData:{
    userInfo:null
  }
})

Use at pages

//index.js
//获取应用实例
var app = getApp()
var Meteor = wx.Meteor;
var util = require('../../utils/util.js')
var _ = Meteor.underscore;

function sortMessage(msgArr){
  if (!_.isArray(msgArr)) {
    return msgArr;
  }
  return msgArr.sort(function(a, b){
    return new Date(b._updateAt) - new Date(a._updateAt);
  });
}

Page({
  data: {
    messages: [],
    userInfo: {},
    inputValue: ""
  },
  //事件处理函数
  bindKeyInput: function(e) {
    this.setData({
      inputValue: e.detail.value
    })
  },
  sendMessage: function(e) {
    var self = this;
    var msg = this.data.inputValue;
    if (!msg || msg.length < 1) {
      return;
    }
    Meteor.call("sendMessage", msg, function(err, result) {
      if (!err) {
        self.setData({
          inputValue: ""
        })
        console.log("发送成功");
      }
    })
  },
  bindViewTap: function() {
    wx.navigateTo({
      url: '../logs/logs'
    })
  },
  onLoad: function () {
    var that = this
    //调用应用实例的方法获取全局数据
    app.getUserInfo(function(userInfo){
      //更新数据
      that.setData({
        userInfo:userInfo
      })
    });
    // 数据订阅
    var subReady = Meteor.subscribe('message.all');
    var DDP = Meteor.getData().ddp;
    Meteor.Tracker.autorun(function(){
      console.log("message.all 订阅状态",subReady.ready())
    });
    DDP.on("added", ({collection, id, fields}) => {
      this.setData({
        messages: sortMessage(Meteor.collection(collection).find())
      })
    });
    DDP.on("changed", ({collection, id, fields}) => {
      this.setData({
        messages: sortMessage(Meteor.collection(collection).find())
      })
    });
    DDP.on("removed", ({collection, id}) => {
      this.setData({
        messages: sortMessage(Meteor.collection(collection).find())
      })
    });
  }
})

Arguments

Meteor.connect(url, options)

• url string required
• options object Available options are :
  • autoConnect boolean [true] whether to establish the connection to the server upon instantiation. When false, one can manually establish the connection with the Meteor.ddp.connect method.
  • autoReconnect boolean [true] whether to try to reconnect to the server when the socket connection closes, unless the closing was initiated by a call to the disconnect method.
  • reconnectInterval number [10000] the interval in ms between reconnection attempts.

Meteor.disconnect()

Disconnect from the DDP server.

Meteor methods

• Meteor.call
• Meteor.loginWithPassword (Please note that user is auto-resigned in - like in Meteor Web applications - use wx Storage store user token.)
• Meteor.logout
• Meteor.logoutOtherClients

Availables packages

Convenience packages

Example `var Meteor = require('./meteor/Meteor');``

• Meteor.EJSON
• Meteor.Tracker
• Meteor.JSON
• Meteor.underscore

ReactiveDict

See documentation.

Meteor.Accounts

• Accounts.createUser
• Accounts.changePassword
• Accounts.forgotPassword
• Accounts.resetPassword
• Accounts.onLogin
• Accounts.onLoginFailure

Meteor.ddp

Once connected to the ddp server, you can access every method available in ddp.js.

• Meteor.ddp.on('connected')
• Meteor.ddp.on('added')
• Meteor.ddp.on('changed')
• ...

Author

• Michaelxu (Michaelxu)

Thanks for react-native-meteor

• Théo Mathieu (@Mokto)
• From inProgress

Want to help ?

Pull Requests and issues reported are welcome ! :)

wechat-mina-ddp's Issues

Error when reconnecting

当server断开重连后，出现这个error，并且每发送任何DDP message都会出现这个error，同时多接受一次message（console每行最左边显示数量都是2）。

我已经分别试过设置autoConnect为true和false然后手动重连都会出现这个症状