Node JS Mysql Crud Application

This tutorial will teach you how to make Crud Application using Node JS and Mysql .

Create the Node Js Project Type on type command prompt

npm init

and press enter key.after that you have the fill configation of project.after done stuff you
will get the package.json file.

after that you have to install the following dependencies

Express
body-parser
Mysql

you have to create the database and tables in mysql database.

After done the stuff you have to create the file server.js

Server.js

const express = require('express')
const bodyParser = require('body-parser')
const mysql = require("mysql");
const server = express();
server.use(bodyParser.json());


//Establish the database connection

const db = mysql.createConnection({

    host: "localhost",
    user: "root",
    password: "",
    database: "dbsmschool",

});

db.connect(function (error) {
    if (error) {
      console.log("Error Connecting to DB");
    } else {
      console.log("successfully Connected to DB");
    }
  });

//Establish the Port

  server.listen(8085,function check(error) {
    if (error) 
    {
    console.log("Error....dddd!!!!");
    }

    else 
    {
        console.log("Started....!!!! 8085");

    }
});

//Create the Records

server.post("/api/student/add", (req, res) => {
    let details = {
      stname: req.body.stname,
      course: req.body.course,
      fee: req.body.fee,
    };
    let sql = "INSERT INTO student SET ?";
    db.query(sql, details, (error) => {
      if (error) {
        res.send({ status: false, message: "Student created Failed" });
      } else {
        res.send({ status: true, message: "Student created successfully" });
      }
    });
  });



//view the Records

server.get("/api/student", (req, res) => {
    var sql = "SELECT * FROM student";
    db.query(sql, function (error, result) {
      if (error) {
        console.log("Error Connecting to DB");
      } else {
        res.send({ status: true, data: result });
      }
    });
  });


//Search the Records

server.get("/api/student/:id", (req, res) => {
    var studentid = req.params.id;
    var sql = "SELECT * FROM student WHERE id=" + studentid;
    db.query(sql, function (error, result) {
      if (error) {
        console.log("Error Connecting to DB");
      } else {
        res.send({ status: true, data: result });
      }
    });
  });



//Update the Records

server.put("/api/student/update/:id", (req, res) => {
    let sql =
      "UPDATE student SET stname='" +
      req.body.stname +
      "', course='" +
      req.body.course +
      "',fee='" +
      req.body.fee +
      "'  WHERE id=" +
      req.params.id;
  
    let a = db.query(sql, (error, result) => {
      if (error) {
        res.send({ status: false, message: "Student Updated Failed" });
      } else {
        res.send({ status: true, message: "Student Updated successfully" });
      }
    });
  });



  //Delete the Records

  server.delete("/api/student/delete/:id", (req, res) => {
    let sql = "DELETE FROM student WHERE id=" + req.params.id + "";
    let query = db.query(sql, (error) => {
      if (error) {
        res.send({ status: false, message: "Student Deleted Failed" });
      } else {
        res.send({ status: true, message: "Student Deleted successfully" });
      }
    });
  });