【发布时间】:2015-02-06 20:36:48
【问题描述】:
我目前遇到了 Meteor 中的集合插入问题。我调用一个方法来将一个新项目插入到集合中。服务器数据库显示新项目,但客户端没有集合记录。我发现如果我刷新页面,我的引用集合的模板就会填充并工作。
这是插入位于 'lib/collections/items.js' 的项目的方法
Items = new Mongo.Collection("items");
Meteor.methods({
addItem: function (text) {
if (! Meteor.userId()){
throw new Meteor.Error("not-authorized");
}
console.log(text);
console.log(Meteor.userId());
console.log(Meteor.user().username);
console.log(Meteor.user().household);
Items.insert({
text: text,
createdAt: new Date(), //current time
owner: Meteor.userId(),
username: Meteor.user().username,
household: Meteor.user().household
});
},
这是位于 '/server/main.js' 的项目的服务器发布
Meteor.publish("items", function(){
if(typeof Meteor.users.findOne({'_id': this.userId}) === 'undefined') return null;
return Items.find( {household : Meteor.users.findOne({'_id': this.userId}).household});
});
这是调用位于'client/main.js'的方法的代码
Template.body.events({
"submit .new-task": function (event) {
// This function is called when the new task form is submitted
var text = event.target.text.value;
text = text.trim();
if(text)//Check for non-null, non-empty
{
text = capitalizeEachWord(text);
console.log(text);
Meteor.call("addItem",text);
}
//Clear form
event.target.text.value = "";
//Prevent default form submit
return false;
},
在这里查询集合以显示在“client/templates/itemList.js”的模板中
Template.itemList.helpers({
items: function() {
console.log('Trying to subscribe');
return Items.find({}, {sort : {checked: 1, createdAt: -1}});
}
我刚刚开始学习 Meteor。感谢您的帮助!
编辑
感谢您的回复,
我已经尝试了这些建议,但仍然得到相同的结果。我现在尝试了一种不同的方式将用户与家庭联系起来,但仍然遇到同样的问题。我可以从客户端插入一个项目,它存在于服务器端,但它不存在于客户端。我确定我在这里遗漏了一些小东西,但对于我的生活来说,找不到它。
我知道这是一个巨大的信息转储,但这是我更新的源代码(仍然产生同样的问题)和日志。我试图把我所知道的关于这个问题的一切都写出来。谢谢你的帮助!我刚开始使用 Meteor,我知道没有人开发过它,所以现在排除故障有点困难。
客户特定代码
位于'client/main.js'
Template.body.helpers({
householdId: function() {
//return Meteor.users.findOne({'_id': Meteor.userId()}).household;
if(Meteor.userId() &&
Households.findOne({users : {$regex : new RegExp(Meteor.userId())}}))
{
console.log('Trying to get id');
return Households.findOne({users : {$regex : new RegExp(Meteor.userId())}})._id;
}
}
});
Template.body.events({
"submit .new-task": function (event) {
// This function is called when the new task form is submitted
var text = event.target.text.value;
text = text.trim();
if(text)//Check for non-null, non-empty
{
text = capitalizeEachWord(text);
console.log(text);
Meteor.call("addItem",text);
}
//Clear form
event.target.text.value = "";
//Prevent default form submit
return false;
},
"submit .new-household": function (event) {
// This function is called when the new task form is submitted
var insertedId;
var text = event.target.householdName.value;
text = text.trim();
if(text)//Check for non-null, non-empty
{
text = capitalizeEachWord(text);
Meteor.call("createHousehold", text);
}
//Prevent default form submit
return false;
}
});
Accounts.ui.config({
passwordSignupFields: "USERNAME_ONLY",
});
订阅我的收藏的代码位于“client/application.js”
//Sub to our collections
Meteor.subscribe('households');
Meteor.subscribe('items');
遍历项目以显示位于“client/templates/itemList.js”的代码
Template.itemList.helpers({
items: function() {
console.log('Trying to subscribe');
return Items.find(
{
household : Households.findOne( {users : {$regex : new RegExp(this.userId)}})._id
}
, {sort : {checked: 1, createdAt: -1}});
},
householdId: function() {
//return Meteor.users.findOne({'_id': Meteor.userId()}).household;
if(Meteor.userId())
{
console.log('Trying to get id from ');
return Households.findOne({users : {$regex : new RegExp(Meteor.userId())}})._id;
}
}
});
收集代码
位于“lib/collections/households.js”的家庭收集代码
Households = new Mongo.Collection("households");
Meteor.methods({
createHousehold: function(text) {
var insertedId;
insertedId = Households.insert({
householdName: text,
createdAt: new Date(), //current time
users: this.userId
});
}//Add user in the future
});
项目集合代码位于“lib/collections/items.js”
Items = new Mongo.Collection("items");
Meteor.methods({
addItem: function (text) {
if (! Meteor.userId()){
throw new Meteor.Error("not-authorized");
}
console.log('Inserting item')
console.log('Item : ' + text);
console.log('UserId : ' + Meteor.userId());
console.log('Username : ' + Meteor.user().username);
console.log('Household : ' + Households.findOne( {users : {$regex : new RegExp(Meteor.userId())}})._id);
Items.insert({
text: text,
createdAt: new Date(), //current time
owner: Meteor.userId(),
username: Meteor.user().username,
household: Households.findOne( {users : {$regex : new RegExp(Meteor.userId())}})._id
});
return true;
},
deleteItem: function (itemId) {
Items.remove(itemId);
},
setChecked: function(itemId, setChecked) {
Items.update(itemId, { $set: {checked: setChecked}});
}
});
服务器代码
服务器代码位于'server/main.js'
Meteor.publish("households", function(){
console.log('Trying to subscribe');
console.log(this.userId);
if(this.userId)
{
//var query = { users : new RegExp("/"+this.userId+"/")};
//console.log(Households.findOne( query ));
console.log(Households.findOne( {users : {$regex : new RegExp(this.userId)}}));
return Households.find( {users : {$regex : new RegExp(this.userId)}});
}
else
{
console.log('Too early');
return null;
}
});
Meteor.publish("items", function(){
console.log('Trying to get items');
if(!this.userId ||
!Households.findOne( {users : {$regex : new RegExp(this.userId)}}))
{
console.log('Returning null');
return null;
}
console.log(Items.findOne( {household : Households.findOne( {users : {$regex : new RegExp(this.userId)}}) }));
console.log(this.userId);
return Items.find( {household : Households.findOne( {users : {$regex : new RegExp(this.userId)}})._id });
});
日志
如果我使用流星在 localhost 上启动站点。当页面出现时(没有用户登录),服务器控制台输出如下:
=> App running at: http://localhost:3000/
I20141209-10:26:50.719(-5)? Trying to subscribe
I20141209-10:26:50.766(-5)? null
I20141209-10:26:50.766(-5)? Too early
I20141209-10:26:50.766(-5)? Trying to get items
I20141209-10:26:50.767(-5)? Returning null
接下来我成功创建了一个用户帐户(使用 accounts-ui/accounts-password 包)。这是该点的输出。
I20141209-10:31:59.562(-5)? Trying to subscribe
I20141209-10:31:59.565(-5)? null
I20141209-10:31:59.566(-5)? Too early
I20141209-10:31:59.566(-5)? Trying to get items
I20141209-10:31:59.566(-5)? Returning null
I20141209-10:32:16.145(-5)? Trying to subscribe
I20141209-10:32:16.145(-5)? 8Skhof4jL2pSguT8Q
I20141209-10:32:16.146(-5)? undefined
I20141209-10:32:16.147(-5)? Trying to get items
I20141209-10:32:16.148(-5)? Returning null
接下来我使用 .new-household 表单创建一个家庭。此时服务器上没有新的输出,但这是客户端的输出:
main.js?ba2ac06f3ff7f471a7fa97093ac9ed5c01e0c8cd:7 Trying to get id
main.js?ba2ac06f3ff7f471a7fa97093ac9ed5c01e0c8cd:7 Trying to get id
itemList.js?a224bda493b90eb94bff9b88b48bb22eaa8aefe1:3 Trying to subscribe
main.js?ba2ac06f3ff7f471a7fa97093ac9ed5c01e0c8cd:7 Trying to get id
main.js?ba2ac06f3ff7f471a7fa97093ac9ed5c01e0c8cd:7 Trying to get id
itemList.js?a224bda493b90eb94bff9b88b48bb22eaa8aefe1:3 Trying to subscribe
此时我使用 .new-task 表单添加一个项目。任务显示在屏幕上闪烁然后消失。这是此时的服务器输出:
I20141209-10:37:09.171(-5)? Inserting item
I20141209-10:37:09.172(-5)? Item : Beans
I20141209-10:37:09.172(-5)? UserId : 8Skhof4jL2pSguT8Q
I20141209-10:37:09.172(-5)? Username : pedro
I20141209-10:37:09.173(-5)? Household : M5NckT6ndqhRKCeWo
这是此时的客户端输出:
main.js?ba2ac06f3ff7f471a7fa97093ac9ed5c01e0c8cd:21 Beans
items.js?2ca606d1e71e2e55d91421d37f060bd5d8db98fe:8 Inserting item
items.js?2ca606d1e71e2e55d91421d37f060bd5d8db98fe:9 Item : Beans
items.js?2ca606d1e71e2e55d91421d37f060bd5d8db98fe:10 UserId : 8Skhof4jL2pSguT8Q
items.js?2ca606d1e71e2e55d91421d37f060bd5d8db98fe:11 Username : pedro
items.js?2ca606d1e71e2e55d91421d37f060bd5d8db98fe:12 Household : M5NckT6ndqhRKCeWo
此时 Item 存在于服务器数据库中,但如果我使用 chrome 中的 Web 控制台执行命令 Items.findOne();它返回未定义。
【问题讨论】:
-
我将您的代码放入meteorpad.com 并且添加的每个项目的网页更新而不刷新。您的浏览器的开发控制台中是否出现任何错误?也许是其他原因导致您的错误。
标签: javascript mongodb meteor