Using the PUT method with Express.js

Question

I'm trying to implement update functionality to an Express.js app, and I'd like to use a PUT request to send the new data, but I keep getting errors using PUT. From everything I've read, it's just a matter of using app.put, but that isn't working. I've got the following in my routes file:

send = function(req, res) { 
    req.send(res.locals.content);
};

app.put('/api/:company', function(res,req) {
    res.send('this is an update');
}, send);

When I use postman to make a PUT request, I get a "cannot PUT /api/petshop" as an error. I don't understand why I can't PUT, or what's going wrong.

Have you tried using methodOverride()? stackoverflow.com/a/8378414/918608 stackoverflow.com/a/14174177/918608 — Josh C.
– Josh C., Commented Sep 4, 2013 at 1:49

Maoz Zadok · Accepted Answer · 2022-05-29 17:47:41Z

23

You may be lacking the actual update function. You have the put path returning the result back to the client but missing the part when you tell the database to update the data.

If you're using MongoDB and ExpressJS, you could write something like this :

app.put('/api/:company', function (req, res) {
    var company = req.company;
    company = _.extend(company, req.body);
    company.save(function(err) {
    if (err) {
        return res.send('/company', {
            errors: err.errors,
            company: company
        });
    } else {
        res.jsonp(company);
    }   
  })
});

This mean stack project may help you as it covers this CRUD functionality which I just used here swapping their articles for your companies. same same.

edited May 29, 2022 at 17:47

Maoz Zadok

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answered Jan 28, 2014 at 1:26

headwinds

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2 Comments

Akurn Over a year ago

are the req and res arguments in the callback in the wrong order? Should be function(req,res)? expressjs.com/api.html#app.put.method

danilodeveloper Over a year ago

@Akurn, yes should be req res.

Jean-François Fabre · Accepted Answer · 2020-07-22 09:29:46Z

5

Your callback function has the arguments in the wrong order.

Change the order of callback to function(req, res). Don't use function(res, req).

edited Jul 22, 2020 at 9:29

Jean-François Fabre♦

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answered Sep 18, 2019 at 7:06

jet street

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Comments

yaya · Accepted Answer · 2019-08-20 16:14:11Z

0

Also if you want to redirect in put or delete (to get adress), you can't use normal res.redirect('/path'), you should use res.redirect(303, '/path') instead. (source)

If not, you'll get Cannot PUT error.

answered Aug 20, 2019 at 16:14

yaya

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Comments

MarvMan · Accepted Answer · 2019-07-13 19:07:09Z

-6

Have you been checking out your headers information? Because header should be header['content-type'] = 'application/json'; then only you will get the update object in server side (node-express), otherwise if you have content type plain 'text/htm' like that you will get empty req.body in your node app.

edited Jul 13, 2019 at 19:07

MarvMan

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answered Dec 19, 2016 at 7:19

selvaraj

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