Using Django to Send a POST Request with JavaScript

I'm currently facing an issue with a JavaScript event-triggered function that is supposed to send a POST request to update objects in my database. The function is triggered by a drop-event, which made me initially avoid using forms for the request. However, I am now questioning if that was the right approach.

Update:

I realized that my mistake was not including the csrf_token in my post request. Despite fixing that, I am still encountering an error: when I print(request.POST) in my Django view, the post request appears empty.

Here is a snippet of my JS file:

[JS code will go here]

The query-dict returns as empty when using 'application/json' as the Content-Type header. However, switching to 'application/x-www-form-urlencoded' resolves the issue, albeit with all the data under the same key.

For instance:

Output with 'application/json':

<QueryDict: {}>

Output with 'application/x-www-form-urlencoded':

<QueryDict: {'{"request_name":"change-extra-fields","type":"increase","id":"8"}': ['']}>

Despite this, I believe that the 'application/json' should be working and I am uncertain why it isn't functioning as expected.

Answer №1

Looks like there is a mistake here

request.setRequestHeader('Content-Type', 'application/json');

In response to your comments, it seems that your post request requires authentication.

Therefore, you will first need to authenticate/login to the site (possibly through another Ajax call). If the website supports jwt/api authentication, you will receive a token that must be included in the header of your next (post) request. It should look something like this:

xhr.setRequestHeader('Authorization', 'Bearer arandombereartoken');

If the site uses session/cookie authentication, I recommend utilizing jQuery and its Ajax functions. This resource should be helpful.

UPDATE:

If you want to receive data in application/json format, you need to check the body of the request

if request.method == "POST":
        print(request.body)

This will return a byte object. In order to get JSON, you will need to decode it as such. Using request.POST is specifically for Content-Type

'application/x-www-form-urlencoded'

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