如何使用流星将对象数组插入 mongodb？

Question

在尝试插入对象数组时，如何在不添加无关字符的情况下获得干净的插入。如果我从 mongodb shell 手动进行插入，我会得到预期的结果，否则它似乎不起作用。

我想要实现的是来自 mongodb shell 的结果：

db.test.insert([{name:"john"},{name:"jane"}]);

产生：

db.test.find()
{ "_id" : ObjectId("53bb0768dc2469c1f440a3c2"), "name" : "john" }
{ "_id" : ObjectId("53bb0768dc2469c1f440a3c3"), "name" : "jane" }

但我不明白，所以我使用下面的代码 sn-p 测试了几种插入对象数组的方法，希望找到正确的组合：

test = new Meteor.Collection("test");
a = new Array();
a.push({name:"john"});
a.push({name:"jane"});
console.log(a);
test.insert(a);  
console.log(a.toString());
test.insert(a.toString());  
console.log(JSON.stringify(a));
test.insert(JSON.stringify(a));
test.insert([{name:"john"},{name:"jane"}]);
test.insert([{"name":"john"},{"name":"jane"}]);

我在控制台中得到了什么：

[ { name: 'john' }, { name: 'jane' } ]
[object Object],[object Object]
[{"name":"john"},{"name":"jane"}]

我在数据库中得到的信息： db.test.find()

{ "0" : { "name" : "john" }, "1" : { "name" : "jane" }, "_id" : "SYkv79XLNQsWgkYmw" }
{ "0" : "[", "1" : "o", "2" : "b", "3" : "j", "4" : "e", "5" : "c", "6" : "t", "7" : " ", "8" : "O", "9" : "b", "10" : "j", "11" : "e", "12" : "c", "13" : "t", "14" : "]", "15" : ",", "16" : "[", "17" : "o", "18" : "b", "19" : "j", "20" : "e", "21" : "c", "22" : "t", "23" : " ", "24" : "O", "25" : "b", "26" : "j", "27" : "e", "28" : "c", "29" : "t", "30" : "]", "_id" : "SiQ3ZpGfeBqj4mXB2" }
{ "0" : "[", "1" : "{", "2" : "\"", "3" : "n", "4" : "a", "5" : "m", "6" : "e", "7" : "\"", "8" : ":", "9" : "\"", "10" : "j", "11" : "o", "12" : "h", "13" : "n", "14" : "\"", "15" : "}", "16" : ",", "17" : "{", "18" : "\"", "19" : "n", "20" : "a", "21" : "m", "22" : "e", "23" : "\"", "24" : ":", "25" : "\"", "26" : "j", "27" : "a", "28" : "n", "29" : "e", "30" : "\"", "31" : "}", "32" : "]", "_id" : "kKRiR8NjNJefBYRya" }
{ "0" : { "name" : "john" }, "1" : { "name" : "jane" }, "_id" : "RBrvkrw5xZaEGdczF" }
{ "0" : { "name" : "john" }, "1" : { "name" : "jane" }, "_id" : "2cfWJqHY4aJ6yF68s" }

我希望一个简单的“test.insert(a)”能给我想要的东西，但它包含数组索引。如何在没有数组索引的情况下构建一个对象数组以从流星插入 mongodb？ Stringify 似乎构建了一个干净的数组序列化，但显然我只是不知道该怎么做？这样做的目的是让我可以在内存中构建一个复杂的对象数组并进行批量插入。

Answer 1

Meteor 只允许您将根级文档存储为对象，如果您给它一个数组，它会尝试将其转换为一个对象。这就是为什么你会得到这个奇怪的结果。您必须调整文档以将数组存储为根文档的一部分

test = new Meteor.Collection("test");
a = new Array();
a.push({name:"john"});
a.push({name:"jane"});

var doc = {
    names: a
}

test.insert(a);

无法将文档存储为 []。

Answer 2

Template.first.rendered=function(){
    var a=[];
    a.push({name:"rahul"});
    a.push({name:"vidu"});
    Meteor.call("array", a , function(error,result){
    });
};