TypeError: Cannot call method 'call' of undefined
at Array.MongooseArray._cast (/Users/bodo/Documents/Repositories/EnabreNode/node_modules/mongoose/lib/types/array.js:78:15)
at Object.map (native)
at Array.MongooseArray.push (/Users/bodo/Documents/Repositories/EnabreNode/node_modules/mongoose/lib/types/array.js:187:23)
at module.exports (/Users/bodo/Documents/Repositories/EnabreNode/accounts/routes/me.js:29:27)
at callbacks (/Users/bodo/Documents/Repositories/EnabreNode/node_modules/express/lib/router/index.js:160:37)
at Promise.module.exports (/Users/bodo/Documents/Repositories/EnabreNode/middleware/load_user.js:15:13)
at Promise.addBack (/Users/bodo/Documents/Repositories/EnabreNode/node_modules/mongoose/lib/promise.js:128:8)
at Promise.EventEmitter.emit (events.js:96:17)
at Promise.emit (/Users/bodo/Documents/Repositories/EnabreNode/node_modules/mongoose/lib/promise.js:66:38)
at Promise.complete (/Users/bodo/Documents/Repositories/EnabreNode/node_modules/mongoose/lib/promise.js:77:20)
我实际上想构建一个非常简单的架构：
{
username: "bodo",
email: "info@example.com",
contacts: [{
user: { username: "john", email: "john@google.com" },
messages: [
{
sender: { username: "bodo", email: "info@example.com" },
receiver: { username: "john", email: "john@google.com" },
body: "How are you these days?"
},
{
sender: { username: "john", email: "john@google.com" },
receiver: { username: "bodo", email: "info@example.com" },
body: "I am totally fine?"
}
]
}]
};
联系人属性包含一个联系人子文档，其中包含实际联系人的用户对象（作为参考）以及稍后的一些元数据，如 hasAcceptedContactRequest、contactSince 等。此外，我还保存来自聊天的消息子文档。这些消息子文档包含消息作为正文属性以及谁发送或接收了它。发送方和接收方再次引用了可以填充的完整用户对象。
理论上这么多。我现在已经创建了这些模式：
用户模式
var Mongoose = require('mongoose');
var ContactSchema = require('./contact');
var UserSchema = new Mongoose.Schema({
username: {
type: String,
index: { unique: true, sparse: true },
required: true, lowercase: true, trim: true
},
email: {
type: String,
index: { unique: true, sparse: true },
required: true, lowercase: true, trim: true
},
contacts: [ContactSchema]
});
module.exports = Mongoose.model('User', UserSchema, 'Users');
ContactSchema
var Mongoose = require('mongoose');
var MessageSchema = require('./message');
var ContactSchema = new Mongoose.Schema({
user: {
ref: "User",
type: Mongoose.Schema.Types.ObjectId
},
messages: [MessageSchema]
});
module.exports = ContactSchema;
消息模式
var MessageSchema = new Mongoose.Schema({
body: {
type: String
},
sender: {
ref: "User",
type: Mongoose.Schema.Types.ObjectId
},
receiver: {
ref: "User",
type: Mongoose.Schema.Types.ObjectId
}
});
module.exports = ContactSchema;
那是路线
app.put('/me', loadUser, function(req, res, next) {
var user = req.user;
var body = req.body;
if (body.contacts) {
body.contacts.forEach(function(contact) {
user.contacts.push({ user: contact });
});
}
console.log(req.user);
user.save(function(err, user) {
if (err) return next(err);
res.send(200);
});
});
解决方案：正如johnyHK所说，使用node的模块系统存在问题。我不小心将模式导出为模型。您现在可以看到上面更正后的示例。所以他们应该工作。