How to update json in the server using express js

Question

I am using express 3.5 js. What I am trying to do is, get the form elements store it in a variable data as JSON and send it back to the server and update the JSON in the server.

In the browser I get the json output as {"name-check":true,"name-text":"someName","dest-check":false,"destination-text":"someplace"}

app.post('/json/*.json', function(req, res)  {
var outputFilename = '/tmp/my.json';
var mydata = req.body;

fs.writeFile(outputFilename, mydata , function(err) {
    if (err) {
        console.log(err);
    } else {
        console.log("JSON saved to " + outputFilename);
    }
});

When I try to update the json with the data from the form, it doesn't work.

I tried this post How can I pretty-print JSON using node.js? which works as long as I have the data in the same file, but doesn't work when getting it from the form.

Answer 1

I first took the req.body in a variable and then used JSON.stringify.