{ "detail": "JSON parse error - Expecting value: line 1 column 1 (char 0)" }

Question

I am using django-restframework, I use postman POST json data to my project but I got the error like tittle, I have set raw and application/json here is the code from postman.

POST /account/post/reply/ HTTP/1.1
Host: localhost:8000
Content-Type: application/json
Cache-Control: no-cache
Postman-Token: a0c7bd93-631e-4c7a-8106-87f018eaf7da

{
    "user": "michael",
    "userid": "1",
    "ihelpid": 6,
    "tittle": "6",
    "info": "6",
    "label": "3",
    "tel": "dxy970525",
    "picture1": null,
    "picture2": null
}

my code is really easy only like :

from rest_framework.parsers import JSONParser,ParseError

class ReplyViewSet(viewsets.ModelViewSet):
    """
    This viewset automatically provides `list` and `detail` actions.
    """

    pagination_class=PageNumberPagination
    queryset = Forum_reply.objects.all()
    serializer_class = ReplySerializer

    #filter
    filter_backends = (DjangoFilterBackend, )
    filter_fields = ['postID',]
    def create(self, request, *args, **kwargs):
        print(request.data)
        data = JSONParser().parse(request)
        return HttpResponse("ok")

After I use viewsets,this error occur,I have print it on shell but it is no problem

Hey, can you debug by checking out what the variable `request` is? JSONParser should work if `request` is a JSON string. Seems like it's not so in this case. — rdas, Mar 31 '19 at 09:55
You should instead use `parser_classes = (JSONParser,)` (google it). This will automatically parse request data for you, so you can access it in `request.data` — mariodev, Mar 31 '19 at 12:38
please check your function where you are sending requests. I was facing same issue, i resolved it by changing this.http.delete(this.APIUrl + '/website', val) to this.http.delete(this.APIUrl + '/website',{body:val}). — abduljalil, Oct 21 '21 at 07:27

El Bachir · Answer 1 · 2021-04-19T08:53:44.390

5

I actually had the same error, you need to use JSON.stringify(data) like the following in case you are using ajax :

datato= {
    "id" : 3,
    "title" : "level up",
    "author" : "jason rock"

}

$.ajax({
    method:'POST',
    url:"/home/api",
    data : JSON.stringify(datato),

})

@SeriForte 's answer pointed me in the right way

edited Apr 19 '21 at 08:53

answered Mar 26 '21 at 20:59

El Bachir

111
1
4

score 2 · Answer 2 · edited Nov 18 '21 at 23:05

2

I have solved this problem,I can access data now

I changed my older code

print(request.data)
data = JSONParser().parse(request)

this will get an error. If I code like below:

print(request)
data = JSONParser().parse(request)

Then I can access data in the dictionary.

So, I did not know why but the issue is fixed

edited Nov 18 '21 at 23:05

Art

2,836
4
17
34

answered Mar 31 '19 at 15:03

Michael Porter

71
1
1
3

score 2 · Answer 3 · answered Jan 09 '20 at 07:21

2

In my case, i was not sending a correct json in the data. So please check that.

answered Jan 09 '20 at 07:21

MrSoloDolo

406
5
10

score 0 · Answer 4 · answered Jan 01 '21 at 14:28

if you use a Javascript fetch request, you have to stringify the JSON Data object like so

let data = {
            "key1": 1,
            "key2": "text"
          }
fetch(url, {
            method: 'POST',
            headers: {
              'content-type': 'application/json',
              'X-CSRFToken': csrftoken
            },
            body: JSON.stringify(data) // <-- do not include the Json array directly
          }).then(function (response) {
            // ...
            console.log(response);
            return response.json();
          }).then(function (body) {
            // ...
            console.log(body);
          }).catch(err => {
              console.log(err)
          })

score 0 · Answer 5 · answered Apr 11 '22 at 10:05

0

If you're using postman it's not possible to put comments in the body > raw section.
Like this

So it is better to remove the commented part out.
HTH

answered Apr 11 '22 at 10:05

Mebatsion Sahle

409
2
9

score 0 · Answer 6 · edited May 09 '23 at 11:55

You need to send the data in json format as well, for example, if your serializer looks something like this -

class exampleSerializer(serializers.ModelSerializer):
    class Meta:
        model = example
        fields = ('title', 'content')

so when you're creating a new object of the above class you need to send data in the format below -

{"title": "first","content": "hey"},

This solved the bug for me!

{ "detail": "JSON parse error - Expecting value: line 1 column 1 (char 0)" }

6 Answers6

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