如何从变量设置mongo字段

Question

for(var key in resp.updated_items){
    Meteor.users.update({backend_id: Meteor.user().backend_id},
    {$set: {'profile': {key: resp.updated_items[key]}}});
}

此查询将正确的信息设置为密钥.但是我如何分配关键的"真实"价值呢？

Answer 1

基本:

var obj = {key: 'value'}; //prints {key: "value"}
var obj2 = {};
var key = 'someKey';
obj2[key] = 'someValue';
//{someKey: 'someValue'}

试试这个:(你必须使用[]它.)

for(var key in resp.updated_items){
  var set = {profile: {}};
  set.profile[key] = resp.updated_items[key];
  Meteor.users.update({backend_id: Meteor.user().backend_id},
  {$set: set});
}

我无法记住set流星的作用.但是在mongo中,你必须做这样的事情:

for(var key in resp.updated_items){
  var set = {};
  set['profile.' + key] = resp.updated_items[key];
  Meteor.users.update({backend_id: Meteor.user().backend_id},
  {$set: set});
}