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App.js
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App.js
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const express=require("express");
const app=express();
const port=3005;
const mysql=require("./connection").con
// confiduration
app.set("view engine","hbs");
app.set("views","./view")
app.use(express.static(__dirname+"/public"))
//Routing
app.get("/",(req,res)=>{
res.render("index");
});
app.get("/add",(req,res)=>{
res.render("add");
});
app.get("/search",(req,res)=>{
res.render("search");
});
app.get("/update",(req,res)=>{
res.render("update");
});
app.get("/delete",(req,res)=>{
res.render("delete");
});
app.get("/view",(req,res)=>{
let qry="select * from test";
mysql.query(qry,(err,results)=>{
if(err)throw err
else{
res.render("view",{data:results});
}
});
// res.render("view");
});
app.get("/addstudent",(req,res)=>{
// res.send("adding data!!");
// fetching data 1st way
// res.send(req.query);
// 2nd way
const { name, phone, email, gender } = req.query
// Sanitization XSS...
// sanitaisation xss saves from hacking
let qry = "select * from test where emailid=? or phoneno=?";
mysql.query(qry, [email, phone], (err, results) => {
if (err)
throw err
else {
// res.send(results);
if (results.length > 0){
res.render("add",{checkmsg:true})
}
else{
let qry2="insert into test values(?,?,?,?)";
mysql.query(qry2, [name, phone, email, gender], (err, results) => {
if (results.affectedRows > 0) {
res.render("add", { mesg: true })
}
})
}
}
})
});
// for searching student
app.get("/searchstudent", (req, res) => {
// fetch data from the form
const { phone } = req.query;
let qry = "select * from test where phoneno=?";
mysql.query(qry, [phone], (err, results) => {
if (err) throw err
else {
if (results.length > 0) {
res.render("search", { mesg1: true, mesg2: false })
} else {
res.render("search", { mesg1: false, mesg2: true })
}
}
});
})
app.get("/updatesearch", (req, res) => {
const { phone } = req.query;
let qry = "select * from test where phoneno=?";
mysql.query(qry, [phone], (err, results) => {
if (err) throw err
else {
if (results.length > 0) {
res.render("update", { mesg1: true, mesg2: false, data: results })
} else {
res.render("update", { mesg1: false, mesg2: true })
}
}
});
})
app.get("/updatestudent", (req, res) => {
// fetch data
const { phone, name, gender } = req.query;
let qry = "update test set username=?, gender=? where phoneno=?";
mysql.query(qry, [name, gender, phone], (err, results) => {
if (err) throw err
else {
if (results.affectedRows > 0) {
res.render("update", { umesg: true })
}
}
})
});
app.get("/removestudent", (req, res) => {
// fetch data from the form
const { phone } = req.query;
let qry = "delete from test where phoneno=?";
mysql.query(qry, [phone], (err, results) => {
if (err) throw err
else {
if (results.affectedRows > 0) {
res.render("delete", { mesg1: true, mesg2: false })
} else {
res.render("delete", { mesg1: false, mesg2: true })
}
}
});
});
// Creating Server
app.listen(port,(err)=>{
if(err)
throw err
})