Mongoose 无法读取具有复杂模式的未定义属性

Question

我有以下用户架构：

var mongoose = require('mongoose');
var userSchema = mongoose.Schema({
    local: {
         email: String,
         password: String
    },
    education: {
        school: {
            start: Boolean,
            name: String,
            graduationYear: String
        },
        college: {
            start: Boolean,
            name: String,
            career: String,
            enterYear: String,
            graduationYear: String
        }
    }
});

现在，当我提交包含所有这些信息的表单时，我的应用会将 POST 请求路由到以下函数：

exports.postEditEducation = function (req, res){
    process.nextTick(function (){
        var user = req.user;

        user.education.school.start = req.body.schoolStart;
        user.education.school.name = req.body.schoolName;
        user.education.school.graduationYear = req.body.graduationYear;

        user.education.college.start = req.body.collegeStart;
        user.education.college.name = req.body.collegeName;
        user.education.college.career = req.body.collegeCareer;
        user.education.college.enterYear = req.body.collegeEnterYear;
        user.education.college.graduationYear = req.body.collegeGraduationYear;

        user.save(function (err){
            if (err)
                throw err;

            res.redirect('/profile');
        });
    });
};

但是，当我提交信息时出现以下错误：

user.education.college.start = req.body.collegeStart;
                             ^
TypeError: Cannot set property 'start' of undefined
    at /file.js:464:46
    at process._tickCallback (node.js:419:13)

Answer 1

var user = req.user; 

您已经为持有 req.user 创建了变量

 user.education.college.start 

为此，您应该创建一个用户集合实例。为用户模式创建一些实例。 例如，我假设 userschema 的集合名称为 usercollection：

var userobj = new usercollection(); 
userobj.education.college.start = req.body.schoolStart; ..

希望这可能有用。