一、设计路由

路径	请求方法	GET参数	POST参数	备注
/	GET			首页
/login	GET			登录
/login	POST		email、nickname、password	处理登录请求
/register	GET			注册
/register	POST		email、nickname、password	处理注册请求
/logout	GET			处理退出出请求
/settings/profile	GET			个人信息
/settings/profile	POST		nickname、bio、gender、birthday、avatar	处理编辑个人信息请求
/topic/new	GET			新建话题
/topic/new	POST		model、title、content	处理话题

主要代码：

router.get('/', function (req, res) {
})

router.get('/login', function (req, res) {
})

router.post('/login', async function (req, res) {
})

router.get('/register', function (req, res) {
})

router.post('/register', async function (req, res) {
})

router.get('/logout', function (req, res) {
})

router.get('/settings/profile', function (req, res) {
})

router.post('/settings/profile',async function (req, res){
})

router.get('/topic/new',function(req,res){
})

router.post('/topic/new',async function(req,res){
})

二、设计Schema 规定 MongoDB 中 Collections

1.User collection:

var mongoose = require('mongoose')

mongoose.connect('mongodb://localhost/blog', { useNewUrlParser: true });

var Schema = mongoose.Schema

var userSchema = new Schema({
    email: {
        type: String,
        required: true
    },
    nickname: {
        type: String,
        required: true
    },
    password: {
        type: String,
        required: true
    },
    created_time: {
        type: Date,
        default: Date.now
    },
    last_modified_time: {
        type: Date,
        default: Date.now
    },
    avatar: {
        type: String,
        default: '/public/img/avatar-default.png'
    },
    bio: {
        type: String,
        default: ''
    },
    gender: {
        type: Number,
        enum: [-1, 0, 1],
        default: -1
    },
    brithday: {
        type: Date
    },
    status: {
        type: Number,
        enum: [0, 1, 2],
        default: 0
    }
})

module.exports = mongoose.model('User', userSchema)

2.User collection: