无法在node.js中使用mongoose查询mongoDB [英] Can't query mongoDB with mongoose in node.js

问题描述

假设我的mongoDB中有一个集合:db.co 并且只有一个文档:

Suppose I have a collection in my mongoDB: db.co and only have one document:

{ "_id" : ObjectId("50d083e32cdcf7ce065b616c"), 
  "age" : 22, 
  "friends" : [ "Tom"], 
  "location" : "NY", 
  "name" : "lee", 
  "skill" : [ "javascript", "java" ] 
 }

然后我想通过此代码在node.js中用mongoose对其进行查询:

Then I want query it in node.js with mongoose through this code:

var coSchema = mongoose.Schema( {
    age: Number,
    friends: Array, 
    location: String,
    name: String,
    skill: Array
})

var Co = mongoose.model('Co', coSchema);
function findSomeoneInCo (name) {
  Co.find({"name": name}, function (err, doc) {
    if (err) {
        console.log('find some one failed: ' + err);
        return;
    }
    console.log('find successed: ' + doc);
  })
}

findSomeoneInCo("lee");

但它什么也没给我

我的代码有什么问题?如何获得当前的查询结果?

What's problem with my code? How can I get the corrent query result?

推荐答案

在确定要使用的集合名称时，猫鼬将小写的模型名称复数.因此，在模型名称为'Co'的情况下，默认情况下它将在cos集合中查找.

Mongoose pluralizes the lower-cased model name when determining the collection name to use. So with a model name of 'Co' it's going to be looking in the cos collection by default.

要覆盖默认值并与现有的co集合对齐:

To override the default and align with your existing co collection:

var Co = mongoose.model('Co', coSchema, 'co');

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