guys I have the following form:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Client Data</title>
</head>
<body>
<h1>Please fill data in the form below:</h1>
<form method="POST" action="/post-feedback">
<label>Name:<input type="text" name="client-name" required></label>
<br>
<label>Email:<input type="text" name="client-email" required></label>
<br>
<label>Comment:<br><textarea name="comment"></textarea></label>
<br>
<input type="submit" value="Submit">
</form>
<a href="/view-feedbacks">View feedbacks</a>
</body>
</html>
and here is the handler:
var express = require('express');
var path = require('path');
var bodyParser = require('body-parser');
var mongodb = require('mongodb');
var dbConn = mongodb.MongoClient.connect('mongodb://localhost:27017',{ useNewUrlParser: true } );
var app = express();
app.use(bodyParser.urlencoded({ extended: false }));
app.use(express.static(path.resolve(__dirname, 'public')));
app.post('/post-feedback', function (req, res) {
dbConn.then(function(db) {
delete req.body._id; // for safety reasons
db.collection('feedbacks').insertOne(req.body);
});
res.send('Data received:\n' + JSON.stringify(req.body));
});
app.get('/view-feedbacks', function(req, res) {
dbConn.then(function(db) {
db.collection('feedbacks').find({}).toArray().then(function(feedbacks) {
res.status(200).json(feedbacks);
});
}).catch(function(error) {
res.json({"message": "Hello json"})
});
});
app.listen(process.env.PORT || 3000, process.env.IP || '0.0.0.0' );
I go into the directory and do node app and the server is running on port 3000 and when I submit the form it responds with the data from the app.post method which seems to work fine. except the app.get method… when you click on the /view-feedbacks in the form it responds with the errror handler I put in the catch “hello json” and the command prompt throws this error:
(node:4312) UnhandledPromiseRejectionWarning: TypeError: db.collection is not a function
at etc...
(node:4312) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:4312) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
what does this mean and how do I fix this? Im guessing I dont have a connection to the database or I did something wrong?