Question

在我尝试运行代码时发生错误，但是对于我的同事来说，到目前为止还没有引发错误

我试图进行语法更改，但没有锻炼。

var mongoose = require("mongoose");

mongoose.connect("mongodb://localhost:27017/blog_demo_2", {useNewUrlParser:true});

//POST schema

var postSchema = new mongoose.Schema({
    title: String,
    content: String,
});

var Post = mongoose.model("Post", postSchema);

//USER schema

var userSchema = new mongoose.Schema({
    name: String,
    email: String,
    posts: [
            {
                 type: mongoose.Schema.Types.ObjectID,   
                 ref: "Post"
            }
         ]
});

var User = mongoose.model("User", userSchema);

wasif4000：〜/ workspace / associations（master）$节点reference.js
/home/ubuntu/workspace/node_modules/mongoose/lib/schema.js:414 抛出新的TypeError（'模式路径' + prefix + key + '的无效值'）; ^

TypeError: Invalid value for schema path `type`
    at Schema.add (/home/ubuntu/workspace/node_modules/mongoose/lib/schema.js:414:13)
    at new Schema (/home/ubuntu/workspace/node_modules/mongoose/lib/schema.js:117:10)
    at Schema.interpretAsType (/home/ubuntu/workspace/node_modules/mongoose/lib/schema.js:770:29)
    at Schema.path (/home/ubuntu/workspace/node_modules/mongoose/lib/schema.js:596:27)
    at Schema.add (/home/ubuntu/workspace/node_modules/mongoose/lib/schema.js:437:12)
    at new Schema (/home/ubuntu/workspace/node_modules/mongoose/lib/schema.js:117:10)
    at Object.<anonymous> (/home/ubuntu/workspace/associations/references.js:16:18)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.runMain (module.js:604:10)
    at run (bootstrap_node.js:389:7)
    at startup (bootstrap_node.js:149:9)
    at bootstrap_node.js:504:3

Answer 1

您的代码中有一个逗号，请看：

var postSchema = new mongoose.Schema({
    title: String,
    content: String,   ---->  You need to get rid of it
});

这应该可以解决问题。

Answer 2

更正为

type: mongoose.Schema.Types.Object.Id,

而不是ID为大写的下一个，应该为小写

type: mongoose.Schema.Types.Object*ID*,

TypeError：架构路径“ type”的值无效

2 个答案: