Use Mongoose create collection in database_mongoose.js 视图操作 createcollection-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_31260205/article/details/53257425

本文介绍如何使用Node.js的Mongoose库定义用户模型，并通过示例代码演示如何创建新的用户记录，解决数据库中集合名匹配问题。

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var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var models = require("./models");

for(var m in models){ 
    mongoose.model(m,new Schema(models[m]));
}

module.exports = { 
    getModel: function(type){ 
        return _getModel(type);
    }
};

var _getModel = function(type){ 
    return mongoose.model(type);
};

db/Handel.js

module.exports = { 
    user:{ 
        name:{type:String,required:true},
        password:{type:String,required:true},
        telephone:{type:String,required:true,unique:true},
        address:{type:String,required:true},
        birthday:{type:Date,required:true},
        gender:{type:String,required:true},
        credit:{type:Number,default:0},
        status:{type:Number,default:0}
    }
};

/db/models.js

Create a folder called /db in project root folder

Handel.js which creates Schema defined in models.js

models.js which defines schema

var User = global.dbHandel.getModel('user');

    User.findOne({name: uname},function(err,doc){   // 同理 /login 路径的处理方式
        if(err){ 
            res.sendStatus(500);
            req.session.error =  '网络异常错误！';
            console.log(err);
        }else if(doc){ 
            req.session.error = '用户名已存在！';
            res.sendStatus(500);
        }else{ 
            User.create({                             // 创建一组user对象置入model
                "name": uname,
                "password": upwd,
                "birthday": ubirthday,
                "address": uaddress,
                "gender": ugender,
                "telephone": utelephone
            },function(err,doc){ 
                 if (err) {
                        res.sendStatus(500);
                        console.log(err);
                    } else {
                        req.session.error = '用户名创建成功！';
                        res.sendStatus(200);
                    }
                  });
        }
    });

In routes/index.js

search user in database use name filed. if not exist, create user.

Problem encountered: cannot find collection using db.user.find()

Solution: Mongoose automatically add a "s" at the end of "user", use db.users.find(), can show the inserted user info.