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Server index.js const Express =require(`Express`); const bodyparser =require(`body-parser`); const cors =require(`Cors`); const router =Express.Router(); const userRoute =require(`./User/userRoute`); var app= Express(); app.use(bodyParser.json()); app.use(userRoute); app.use(cors()); app.get(`/*`, function (req, res) { res.status(404).send({error:Invalid Operation}); }); app.listen(`3000`,function (err){ if(err) { console.log(err); process.exit(-1); } console.log(Server listen port 3000); }) route.js var express =require(`express`); var router =express.Router(); var controller =require(`./userController`); router.post(`/`, (req, res) => { controller.add(req.body).then(response => { res.status(response.status).send(response.message); }).catch(err => { res.status(err.status).send(err.message); }) }); router.get(`/`, (req, res) => { controller.getAll().then(response => { res.status(response.status).send(response); }).catch(err => { res.status(err.status).send(err.message); }) }); router.get(`/:id`, (req, res) => { controller.getSingle(req.params.id).then(response => { res.status(response.status).send(response); }).catch(err => { res.status(err.status).send(err.message); }) }); module.exports= router; controller.js var mongoose = require(`../DBconfig`); var UserSchema =mongoose.model(`course`); var controller =function(){ this.add=function(cname,cCode,pMark,lecture){ return new Promise((resolve, reject) => { var user = new CourseSchema({ name:cname.name, code:cCode.code, passMark:pMark.passMark, lectureIncharge:lecture.lectureIncharge }) user.save().then(() => { resolve({`status`: 200, `message`:`added new course`}); }).catch(err => { reject({`status`: 404, `message`:`err:-`+err}); }) }) } this.getAll = function() { return new Promise((resolve, reject) => { CourseSchema.find().exec().then(data => { resolve({`status`: 200, `message`:`get all data`, `data`: data}); }).catch(err => { reject({`status`: 404, `message`:`err:-`+err}); }) }) } this.getSingle = function(id) { return new Promise((resolve, reject) => { CourseSchema.find({_id: id}).exec().then(data => { resolve({`status`: 200, `message`:`get single data`, `data`: data}); }).catch(err => { reject({`status`: 404, `message`:`err:-`+err}); }) }) } } ©

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