Parsing JSON object sent through AJAX in Django - json

Question

This is my code creating a json file:
$( ".save" ).on("click", function(){
var items=[];
$("tr.data").each(function() {
var item = {
itemCode : $(this).find('td:nth-child(1) span').html(),
itemQuantity : $(this).find('td:nth-child(4) span').html()
};
items.push(item);
});
});
Now the json object looks like:
[{"itemcode":"code1","itemquantity":"quantity1"},{"itemcode":"code2","itemquantity":"quantity2"},...]
My question is how do I parse this data in Django view?
Following is my AJAX function for reference:
(function() {
$.ajax({
url : "",
type: "POST",
data:{ bill_details: JSON.stringify(items),
calltype:'save'},
dataType: "application/json", // datatype being sent
success : function(jsondata) {
//do something
},
error : function() {
//do something
}
});
}());
Since I'm sending multiple AJAX request to the same view, I need the 'calltype' data as well.
Thanks you on your answer!! BTW, I badly need to know this simple stuff, which I'm missing
This is my code snippet for parsing:
if (calltype == 'save'):
response_data = {}
bill_data = json.loads(request.POST.get('bill_details'))
itemcode1=bill_details[0]['itemCode']
#this part is just for checking
response_data['name'] = itemcode1
jsondata = json.dumps(response_data)
return HttpResponse(jsondata)
The error being raised is
string indices must be integers
Request your help
For your reference, this is my POST response (taken from traceback):
bill_details = '[{"itemCode":"sav","itemQuantity":"4"}]'
calltype = 'save'
csrfmiddlewaretoken = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
EDITED Django View
This is my edited view:
if (calltype == 'save'):
bill_detail = request.POST.get('bill_details')
response_data = {}
bill_data = json.loads(bill_detail)
itemcode1=bill_data[0]['itemCode']
#this part is just for checking
response_data['name'] = itemcode1
jsondata = json.dumps(response_data)
return HttpResponse(jsondata)
I fail to understand the problem. SO, to solve it, my question: what is the datatype of the return for get call and what should be the input datatype for json.loads. Bcoz the error being shown is json.loads file has to be string type!! (Seriously in limbo)
Error:
the JSON object must be str, not 'NoneType'