Post Request from express to mongoDB

Question

I am trying to post the information to the mongoDB with Express. All connections to DB are working fine, because get Request works

In my server.js I have defined the Schema

var todoSchema = new Schema({
    taskName: String,
    createdAt: Date,
    isDone: Boolean,
    prioraty: String
  }, {
    collection: 'tasks'
  });

var Model = mongoose.model('Model', todoSchema);

And then the app.post Request

app.post('/tasks', function(req, res) {
  var savedata = new Model({
    'taskName': req,
    'isDone': false,
    'createdAt': Date.now(),
    'prioraty': 'medium'
  }).save(function (err, result) {
    if (err) throw err;

    if (result) {
      res.json(result)
    }
  })
});

and this doesn't work at all...

In my frontend I call it by pressing the button, but nothing happens..

  postTask(task) {
    return this.http.post('http://localhost:3000/tasks', task);
  }

How could I fix it? As mentioned, the GET request works fine, so I hope I am on right way...

So here is get Request for example

app.get('/tasks', (req, res) => {
  Model.find({
   // 'request': query
  }, function(err, result) {
    if (err) throw err;
    if (result) {
      res.json(result)
    } else {
      res.send(JSON.stringify({
        error : 'Error'
      }))
    }
     })
    });

which version of angular you are using? you should subscribe your post request — Sravan
– Sravan, Commented May 30, 2018 at 13:27
Adding the error message for the POST request as well as a sample of the task object you are sending in the post request is helpful. — Andrew Lobban
– Andrew Lobban, Commented May 30, 2018 at 13:30

Andrew Lobban · Accepted Answer · 2018-05-30 13:24:27Z

2

Looking at your POST, taskName is a string based on your Schema, but you are passing it the complete req object. It should be what ever the property in the req.body is like req.body.taskName if that is what you are passing in your request.

answered May 30, 2018 at 13:24

Andrew Lobban

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Comments

Sravan · Accepted Answer · 2018-05-30 13:44:47Z

1

First you need to recieve your response in frontend

In service:

postTask(task) {
    return this.http.post('http://localhost:3000/tasks', task);
}

If you are using angularjs(angular 1+)

You need to use then and catch to recieve the response

In controller:

this.service.postTask(task).then(function(response) {
    console.log(response)
}).catch(function(error) {
    console.log(error)
})

If you are using angular(angular 2+)

You need to use subscribe as this.http returns observable

In Component:

this.service.postTask(task).subscribe( response => {
    console.log(response)
})

Second, as @andrew mentioned,

taskName you should send string since you have taskName schema as string

var todoSchema = new Schema({
    taskName: String,
})

Update:

req.body Contains key-value pairs of data submitted in the request body. By default, it is undefined, and is populated when you use body-parsing middleware such as body-parser

The following example shows how to use body-parsing middleware to populate req.body.

var app = require('express')();
var bodyParser = require('body-parser');

app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded

    app.post('/tasks', function(req, res) {
       console.log(req.body)
    });

Here is Documentation of body-parser

edited May 30, 2018 at 13:44

answered May 30, 2018 at 13:33

Sravan

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12 Comments

Anna F Over a year ago

Thanks! It helped a lot, one more question - my request body is now empty...so how could I fix this? 'taskName': req, So, for example, if I write 'taskName':"test3", it works fine, but I can't pass the argument from function

Sravan Over a year ago

can you console req.body , try req.body.taskName

Sravan Over a year ago

or req.params if you console.log(req) you ll get to know what are present

Sravan Over a year ago

you need to use bodyParser to get req.body please check the updated answer. you need to npm install body-parser --save

Anna F Over a year ago

I am already using it... my console.log gives me empty object {}, if I try to console req.body

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