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VisualizaçõesSave HTML form data to text file using node js
I am using node js and my requirement is save HTML form values which is sent by user, and store those values in text file using node js, and each time data should be save to next lines instead of saving to same line.I got stuck how to do this process.
HTML Code:
<form method="POST" action="/users/contact">
<select name="car" size="1" required id="rankx">
<option value="" selected disabled hidden>Option</option>
<option value="volvo">volvo</option>
<option value="swift">swift</option>
</select>
<br />
<select name="model" size="1" required>
<option value="" selected disabled hidden>Rank</option>
<option value="c500">c500</option>
<option value="Ta66">Ta66</option>
</select>
<input type="submit" value="Submit" name="submit" id="submit"/>
Node js Code:
var express = require('express');
var fs = require ('fs');
router.post("/contact",function(req,res){
let car = req.body.car;
let model = req.body.model;
var form_data = {
car: car,
model: model
}
fs.appendFileSync('./message.txt',form_data.toString());
});
Required outpt: // store in text file userData.txt id carname carmodel 1 abc abc_1 2 xyz xyz_1
1 Respostas
Responde à pergunta0
The solution what happens to me was first create a JSON file to save the data and next put this information in a text file. Following four steps:
Step 1: First you need read the existing data from JSON file.
Step 2: Add new car using push method.
Step 3: Write the new and old data in JSON file.
Step 4: Write the new info in the a text file.
Here is the code:
app.js
const express = require('express');
const app =express()
var fs = require ('fs');
// middleware
app.use(express.urlencoded({extended:true}))
// STEP 1: Read the existing data from json file
let users= require("./message.json")
// API routes
app.get('/', (req, res) => {
res.sendFile(__dirname + '/public/index.html');
})
app.post("/",function(req,res){
let car = req.body.car;
let model = req.body.model;
// new car
let formData = {
car: car,
model: model
}
res.send(formData)
// STEP 2: add new user data to users object using push method
users.push(formData)
// STEP 3: Writing data in a JSON file
fs.writeFile('message.json', JSON.stringify(users), err =>{
if(err) throw err
console.log("Done writting JSON file")
})
// STEP 4: Write the new info in the text file named message
fs.writeFile('./message.txt',JSON.stringify(users), err =>{
if(err) throw err
console.log("Done writting text file")
});
});
app.listen(3000, function(){
console.log("server started on port 3000")
})
You need create a JSON file to save data like this:
message.json
[]
and a empty message.txt to storage the data, this file overwrite when save the data.
Leave screenshots.
I hope help you.
