How to parse a nested json ajax object in Django views?

Question

I need to make a request as follows:

var url="http://127.0.0.1:8080/simulate/";
    $.ajax({
        url: url,
        type: 'POST',
        data:{  student_num:10,
                company_num:10,
                students:"",
                csrfmiddlewaretoken:'{{csrf_token}}',
                companies:[{weight:10},{weight:11},{weight:9}]
            },
        success: function(data, textStatus, xhr) {
            var text=xhr.responseText
            console.log(text)
        }
    });

But in this way, the request.POST object is not organizing the companies into a nested json array. Instead it makes it into a 2D array as follows:

<QueryDict: {u'student_num': [u'10'], u'students': [u''], u'companies[2][weight]': [u'9'], u'companies[1][weight]': [u'11'], u'company_num': [u'10'], u'companies[0][weight]': [u'10'], u'csrfmiddlewaretoken': [u'RpLfyEnZaU2o4ExxCVSJkTJ2ws6WoPrs']}>

In this way, I feel hard to reorganize the companies into a list of objects. I checked some other questions, some people say we should do this:

companies:"[{weight:10},{weight:11},{weight:9}]"

And then use json.loads to parse the string back to a list of objects. But I am keep getting parsing error if I use codes like this:

company_array = request.POST['company_array']
company_array = json.loads(company_array)

or this:

company_array = json.load(StringIO(company_array))

So what should be the correct way to handle nested JSON object?

arthur.sw · Accepted Answer · 2016-01-03 18:01:24Z

You should use JSON.stringify() to stringify your data before sending it:

$.ajax({
        url: url,
        type: 'POST',
        data: { data: JSON.stringify({  student_num:10,
                company_num:10,
                students:"",
                csrfmiddlewaretoken:'{{csrf_token}}',
                companies:[{weight:10},{weight:11},{weight:9}]
            }) },
        success: function(data, textStatus, xhr) {
            var text=xhr.responseText
            console.log(text)
        }
    });

Then you can parse with json.loads() on the server side:

 data = json.loads(request.POST.get('data'))

Community · Accepted Answer · 2017-05-23 11:46:08Z

0

You might find the answers here useful: Reading multidimensional arrays from a POST request in Django

edited May 23, 2017 at 11:46

CommunityBot

11 silver badge

answered Jun 19, 2013 at 21:04

Aeon

6,5175 gold badges32 silver badges31 bronze badges

Comments

Abbasov Alexander · Accepted Answer · 2013-06-24 21:29:49Z

0

You can try look to django-SplitJSONWidget-form and get decision from it.

answered Jun 24, 2013 at 21:29

Abbasov Alexander

1,9381 gold badge20 silver badges27 bronze badges

Collectives™ on Stack Overflow

How to parse a nested json ajax object in Django views?

3 Answers 3

Comments

Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Linked

Related