Question

我有1个光标来计算选民总数。我有两种方法，首先计算对我有利的选民总数，第二种方法计算投票的总选民数。

LIB / collection.js

infavourcount = new Mongo.Collection('infavourcount');

votedone = new Mongo.Collection('votedone');

SERVER / publish.js [算上有利于我的选民]

function upsertInFavourCount() {
  var yes = voters.find({favour: {$regex:"Y", $options: 'i'}}).count();
  var maybe = voters.find({favour: {$regex:"M", $options: 'i'}}).count();
  var no = total - (yes + maybe);
  infavourcount.upsert('infavour',
    { 
        yes: yes ,
        maybe: maybe,
        no:no
    }
 );
}

// null name means send to all clients
Meteor.publish(null,function() {
    upsertInFavourCount();
    return infavourcount.find();
});

SERVER / publish.js [计算成功投票]

function upsertVoteDone() {
    var done = voters.find({voted: {$regex:"Y", $options: 'i'}}).count();
    votedone.upsert('votedone',
      { 
        done: done 
      }
   );
}

Meteor.publish(null,function() { 
    upsertVoteDone();
    return votedone.find();
});

var cursor = voters.find();

cursor.observe({
  changed: upsertVoteDone
});

客户端/模板/ home.js

Template.home.onCreated(function(){
   Meteor.subscribe('voters');
   Meteor.subscribe('infavourcount');
   Meteor.subscribe('votedone');
});

Template.home.helpers({
   yesvote : function() {
    return infavourcount.findOne().yes;
   },
   maybevote : function() {
    return infavourcount.findOne().maybe;
   },
   novote : function() {
    return infavourcount.findOne().no;
   },
   votedone : function() {
      return votedone.findOne().done;
   }

}）;

我的问题是如何在一个Meteor出版集合的观察方法中调用多个upsert方法。

Answer 1

顺便说一句，我得到了解决方案。答案是在＆＃34;更改＆＃34;或者＆＃34;添加＆＃34;或＆＃34;删除＆＃34;事件并在其中调用n个upsert方法。

cursor.observe({
  changed: function(id, fields){
    upsertInFavourCount();
    upsertVoteDone();
}

}）;

Meteorjs中的Collection.observe（）事件的多个方法调用

1 个答案: