node.js Mongoose 创建多个文档

Mongoose create multiple documents

提问by lostintranslation

I know in the latest version of Mongoose you can pass multiple documents to the create method, or even better in my case an array of documents.

我知道在最新版本的 Mongoose 中，您可以将多个文档传递给 create 方法，或者在我的情况下更好的是传递一个文档数组。

var array = [{ type: 'jelly bean' }, { type: 'snickers' }];
Candy.create(array, function (err, jellybean, snickers) {
    if (err) // ...
});

My problem is that the size of the array is dynamic so in the callback it would be helpful to have an array of the created objects.

我的问题是数组的大小是动态的，因此在回调中拥有一个已创建对象的数组会很有帮助。

var array = [{ type: 'jelly bean' }, { type: 'snickers' }, ..... {type: 'N candie'}];
Candy.create(array, function (err, candies) {
    if (err) // ...

    candies.forEach(function(candy) {
       // do some stuff with candies
    });
});

Not in the documentation, but is something like this possible?

不在文档中，但这样的事情可能吗？

回答by JohnnyHK

You can access the variable list of parameters to your callback via arguments. So you could do something like:

您可以通过arguments. 所以你可以这样做：

Candy.create(array, function (err) {
    if (err) // ...

    for (var i=1; i<arguments.length; ++i) {
        var candy = arguments[i];
        // do some stuff with candy
    }
});

回答by Nebojsa Sapic

With Mongoose v5.1.5, we can use insertMany()method with array passed.

在Mongoose v5.1.5 中，我们可以使用insertMany()方法传递数组。

const array = [
    {firstName: "Jelly", lastName: "Bean"},
    {firstName: "John", lastName: "Doe"}
];

Model.insertMany(array)
    .then(function (docs) {
        response.json(docs);
    })
    .catch(function (err) {
        response.status(500).send(err);
    });

回答by Soviut

According to this ticketon GitHub, Mongoose 3.9 and 4.0 will return an array if you supply an array and a spread of arguments if you supply a spread when using create().

根据GitHub 上的这张票，如果您在使用create().

回答by dimpiax

by insertfunction of collection db, example:

通过insert收集数据库的功能，例如：

Model.collection.insert(array, (err, list) => {
  if (err) throw err;

  console.log('list:', list);
});