I have a NodeJS/Express application.
From an url endpoint titled: localhost:3000/form?someProp=someValue&somethingElse=someOtherValue
This page submits a form to another Express endpoint.
I submit to an Express POST endpoint. I know in a GET endpoint I could access the query params via req.query, but I cannot seem to do that in a POST request.
Is there a way to access the query params from the request in a POST route?
(other than splicing the header.referrer... which I may just have to do)
Here are some code snippets:
If I submit to the first route it works, if I submit to the second... it does not.
router.get('/test',
(req, res) => {
console.log(req.query); // {someProp: someValue, somethingElse: someOtherValue }
}
);
router.post('/test2',
(req, res) => {
console.log(req.query); // returns {}
}
);
So I tried to send a simple request to test it and got everything working without doing anything special (The only thing extra I have is that I'm using body-parser middleware from npm):
app.use(bodyParser.json({limit: '50mb'}));
Then I tried this simple route and got the result query params as you can see in the picture attached.
http://localhost:8080/test?test=1&what=2
Any chance you're sending the other form request from the client in a different way? try looking at the network in chrome and see if you sending what you expecting. Obviously, there is something missing here as it worked for me without doing anything special.
Related
I've set up a react form running on http://localhost:3000/about and I've the backend running on port 5000 (localhost:5000). On react's package.json I set up "proxy":"localhost:5000:.
When I use postman and I send the post to localhost:5000/api/contact, the email is sent correctly (I send the data as JSON - name, email and message). Status 200
When I use the react form, the data is well prepared as json but I can't figure out the baseURL to send correctly the method post. status 404. I tried:
localhost:3000/about/api/contact;
localhost:3000/api/contact;
localhost:3000/api.... None works...
FYI
the server is set up with the following middleware and is working ok:
app.use('/api',contactRoute)
the controller is imported and coded as following:
router.post('/contact', (req, res)=>{
const data = req.body;
The React part is not posting correctly with axios and is coded as following:
onSubmit: async (values) => {
//values.preventDefault();
try {
const data = (JSON.stringify(values, null, 2))
setLoader(true);
console.log(data)
await axios.post('/contact', data);
The method post in react is never completed, when I check the console.log of data, is correctly structured as JSON...status 404
use the post parameter in your axois request {port: 5000} then It will use your actual backend port.
By default, axios uses the base path from the URL. So, here when an API request is made.
await axios.post('/contact', data);
It is actually making the post request on localhost:3000 rather than your backend server at localhost:5000. Also, "api" should also be prepended.
One simple way is to use absolute URL which should work.
await axios.post('http://localhost:5000/api/contact', data);
I've implemented the "sign in with Facebook" authorization method for my Express.js Node app. Since the app is hosted in the EU, Facebook requires it to have a data deletion request callback URL.
I've created an endpoint for the data deletion request, but whenever I make Facebook call that endpoint both req.body and req.query are empty - if I've understood correctly the body should contain a signed_request that could be used to e.g. verify the caller.
My CORS settings should be fine and I've tested my endpoint by calling it from Postman. The endpoint is able to receive a POST request with a JSON body without any problem.
So, what am I doing wrong - why does it seem like Facebook is calling my endpoint with a POST request that has an empty body?
My endpoint:
import express from 'express'; // 4.17.1
const router = express.Router();
router.post('/fb_data_deletion', (req, res, next) => {
console.log(req.body); // {}
console.log(req.query); // {}
if (!req.body || !req.body.signed_request) {
console.log('Bad request'); // Ends up here whenever Facebook calls this route
return req.sendStatus(400);
}
// verify request, delete user's data + other code here
});
Turns out Facebook isn't sending a POST request that uses Content-Type application/json but application/x-www-form-urlencoded.
To get the body of Facebook's POST request I had to add the following line to my app.js where the Node server is being set up:
app.use(express.urlencoded());
Hello I am new to NodeJs. Currently I am working in node with Express framework.
I installed the express-back package in my project and now I want to send send back data to view from where post request fired.
Below is my code that I write:
routes.js
router.post('/register/user',Rules.UserRules.registerUser,UserController.registerUser)
UserController.js
const {check, validationResult} = require('express-validator');
registerUser = function (req, res, next) {
// Validate request parameters, queries using express-validator
const errors = validationResult(req)
console.log("==== errors ===")
console.log(errors.array())
if (!errors.isEmpty()) {
console.log("==== erorror founded ====")
return res.redirect('/signup',{errors:errors})
}else{
console.log('--- form body ----')
console.log(req.body)
}
}
module.exports = {registerUser}
When I submit my form to this route then control moves to UserController and I validations fails then I want to send it back to view without defining the redirect path I just want to send it back to view from where request received with errors. But I did not find any useful solution yet.
Is there any idea that how I can achieve this target. Suggest any useful link for nodejs beginner.
use res.send(errors) it send errors to client at this route. but if you want to redirect it to another route and then send it to client you have to create /signup route and use res.send(errors) it send errors to client. by default ``` res```` will redirect to redirected route.
router.post('/signup', (req, res)=>{
//send error or do somethings.
res.json(req.body.errors);
})
Use
app.locals.errors=errors
to make your error variable available to your template upon redirection as a general guide. Read more at http://expressjs.com/en/5x/api.html#app.locals. Remember, this will share the error variable across the application, so do not forget to apply logic that allows only the logged in user to view the error information relevant to that user.
I made a form post request from my react front end. In my express route I handle it, and I send the data to the browser, as such:
app.post("/api/fetchuser", async (req, res) => {
// Doing some stuff here
res.send(req.body.user);
});
My question is: How can I get the data from this POST request route back to my client side? Previously, I did axios.get(...) to retrieve data on a app.get(...) route in a similar fashion, however, this is a POST route. How can I solve this issue?
Just do axios.post request. See Performing a POST request section of axios documentation.
Edit: Yes you can also retrieve data by POST request. You don't have to post any data to the server while performing the request.
axios.post('/api/fetchuser/',{})
.then(res => console.log(res.data));
I've been struggling for 2 days on this one, googled and stackoverflowed all I could, but I can't work it out.
I'm building a simple node app (+Express + Mongoose) with a login page that redirects to the home page. Here's my server JS code :
app
.get('/', (req, res) => {
console.log("Here we are : root");
return res.sendfile(__dirname + '/index.html');
})
.get('/login', (req, res) => {
console.log("Here we are : '/login'");
return res.sendfile(__dirname + '/login.html');
})
.post('/credentials', (req, res) => {
console.log("Here we are : '/credentials'");
// Some Mongoose / DB validations
return res.redirect('/');
});
The login page makes a POST request to /credentials, where posted data is verified. This works. I can see "Here we are : '/credentials'" in the Node console.
Then comes the issue : the res.redirect doesn't work properly. I know that it does reach the '/' route, because :
I can see "Here we are : root" in the Node console
The index.html page is being sent back to the browser as a reponse, but not displayed in the window.
Chrome inspector shows the POST request response, I CAN see the HTML code being sent to the browser in the inspector, but the URL remains /login and the login page is still being displayed on screen.
(Edit) The redirection is in Mongoose's callback function, it's not synchronous (as NodeJS should be). I have just removed Mongoose validation stuff for clarity.
I have tried adding res.end(), doesn't work
I have tried
req.method = 'get';
res.redirect('/');
and
res.writeHead(302, {location: '/'});
res.end();
Doesn't work
What am I doing wrong? How can I actually leave the '/login' page, redirect the browser to '/' and display the HTML code that it received?
Thanks a million for your help in advance :)
The problem might not lie with the backend, but with the frontend. If you are using AJAX to send the POST request, it is specifically designed to not change your url.
Use window.location.href after AJAX's request has completed (in the .done()) to update the URL with the desired path, or use JQuery: $('body').replaceWith(data) when you receive the HTML back from the request.
If you are using an asynchronous request to backend and then redirecting in backend, it will redirect in backend (i.e. it will create a new get request to that URL), but won't change the URL in front end.
To make it work you need to:
use window.location.href = "/url"
change your async request (in front end) to simple anchor tag (<a></a>)
It's almost certain that you are making an async call to check Mongoose but you haven't structured the code so that the redirect only happens after the async call returns a result.
In javascript, the POST would look like something this:
function validateCredentials(user, callback){
// takes whatever you need to validate the visitor as `user`
// uses the `callback` when the results return from Mongoose
}
app.post('/credentials', function(req, res){
console.log("Here was are: '/credentials'";
validateCredentials(userdata, function(err, data){
if (err) {
// handle error and redirect to credentials,
// display an error page, or whatever you want to do here...
}
// if no error, redirect
res.redirect('/');
};
};
You can also see questions like Async call in node.js vs. mongoose for parallel/related problems...
I've been working on implementing nodemailer into my NextJS app with Express. Was having this issue and came across this. I had event.preventDefault() in my function that was firing the form to submit and that was preventing the redirect as well, I took it off and it was redirecting accordingly.
Add the following in your get / route :
res.setHeader("Content-Type", "text/html")
Your browser will render file instead of downloading it