Question

此代码有一个集合MenuItems，需要根据登录用户配置文件中的值进行过滤， db.users.find（{}）; out put是

“个人资料”：{“menuGroup”：“a”}

但我收到错误：

Meteor.userId只能在方法调用中调用。在发布函数中使用this.userId。

来自流星服务器终端。问题行标记在下面代码的末尾。为什么错误以及如何解决？感谢

/////////////////////////////////////
//       client
/////////////////////////////////////
<template name="mainMenu">
  <div class="container">
    <div class="row">
      <section class="col-xs-12">
        <div class="list-group menuItems">
          {{#each menuItems}}
            <li data-template="{{menuItem}}" role="presentation">
              <a href="#" class="list-group-item menuItem">
                <img src="/abc.png">
                {{menuItem}} <span class="badge">&#x3e;</span>
              </a>
            </li>
          {{/each}}
        </div>
      </section>
    </div>
  </div>
</template>

Template.mainMenu.onCreated(function () {
  var template = this;
  template.handler = template.subscribe('menuItems');
});

Template.mainMenu.helpers({
  menuItems: function () {
    return MenuItems.find();
  }
});

Template.mainMenu.onDestroyed(function () {
  var template = this;
  if (template.handler && template.handler.stop) template.handler.stop();
});

/////////////////////////////////////
//       server code
/////////////////////////////////////    
var items =
  [
    {menuItem: "task1", group: "ab"},
    {menuItem: "task2", group: "ab"},
    {menuItem: "task3", group: "b"},
    {menuItem: "task4", group: "a"},
    {menuItem: "task5", group: "a"},
    {menuItem: "task6", group: "a"},
    {menuItem: "task7", group: "b"},
    {menuItem: "task8", group: "b"},
    {menuItem: "task9", group: "b"},
    {menuItem: "login", group: "ab"},
    {menuItem: "logout", group: "ab"}
  ]
if (!MenuItems.find().count()) {
    _.each(items, function (doc) {
        MenuItems.insert(doc);
    })
}

Meteor.publish('menuItems', function(){
  var menuGroup = Meteor.user().profile.menuGroup; //<<<<< problem line
  return MenuItems.find({group: menuGroup});
});

Answer 1

我认为你需要更换

Meteor.user()

类似

Meteor.users.findOne({_id: this.userId})

内部发布

...尝试...

Meteor.publish('menuItems', function(){
  if (!this.userId) return null;

  var menuGroup = Meteor.users.findOne({_id:this.userId}).profile.menuGroup;
  return MenuItems.find({group: menuGroup});
});

用户配置文件值作为集合查找查询中的值

1 个答案: