Initializing Express:
const express = require('express');
const mysql = require('mysql');
Create connection Turn on your xampp ! And write these lines for
const db = mysql.createConnection({
host : '127.0.0.1',
user : 'root',
database : 'nodemysql'
});
//connect
db.connect((err) =>{
if(err){
throw err;
}
console.log("Mysql Connected")
})
const app = express();
Creating Database
app.get('/createdb', (req,res)=>{
let sql = "CREATE DATABASE nodemysql"
db.query(sql,(err,result)=>{
if(err) throw err;
console.log(result)
res.send("Database Created")
})
})
Create Table
app.get('/createPostTable',(req,res)=>{
let sql = 'CREATE TABLE posts(id int AUTO_INCREMENT , title VARCHAR(255) , body VARCHAR(255), PRIMARY KEY (id) )';
db.query(sql,(err,result)=>{
if(err) throw err
console.log(result)
res.send("posts table created ... ")
})
})
Insert post 1
app.get('/addpost1/:title/:body',(req,res) =>{
let posts = {title: req.params.title ,body: req.params.body};
let sql = 'INSERT INTO posts SET ? ' ;
let query = db.query(sql,posts,(err,result) =>{
if(err) throw err
console.log(result.insertId)
res.json({ status: 200 , message: `post is successfully inserted at ${result.insertId} ` ,posts})
})
})
Fetch all posts
app.get('/getallposts',(req,res) =>{
let posts = {title: 'post1',body:'this is post number 1 '};
let sql = 'SELECT * FROM posts ' ;
let query = db.query(sql,posts,(err,result) =>{
if(err) throw err
res.json({ status: 200 , message: "All posts" , data:result})
})
})
Fetch post By ID
app.get('/getpost/:id',(req,res)=>{
let sql = `SELECT * FROM posts WHERE id = ${req.params.id}`;
let query = db.query(sql,(err,result) => {
if(err) throw err
console.log(result)
res.json({ status: 200 , data:result})
})
})
Update post
app.get('/updatepost/:id', (req, res) => {
let newTitle = 'Updated Title';
let sql = `UPDATE posts SET title = '${newTitle}' WHERE id = ${req.params.id}`;
let query = db.query(sql, (err, result) => {
if(err) throw err;
console.log(result);
res.status(200).json({status:200,data:result, message:'Post updated...'});
});
});
Delete post
app.get('/deletepost/:id', (req, res) => {
let newTitle = 'Updated Title';
let sql = `DELETE FROM posts WHERE id = ${req.params.id}`;
let query = db.query(sql, (err, result) => {
if(err) throw err;
console.log(result);
res.send('Post deleted...');
});
});
app.listen('3000', ()=>{
console.log("Server Started on port 3000");
})
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent