[Django]-Django QueryDict only returns the last value of a list

The function below converts a QueryDict object to a python dictionary. It’s a slight modification of Django’s QueryDict.dict() method. But unlike that method, it keeps lists that have two or more items as lists.

def querydict_to_dict(query_dict):
    data = {}
    for key in query_dict.keys():
        v = query_dict.getlist(key)
        if len(v) == 1:
            v = v[0]
        data[key] = v
    return data

Usage:

data = querydict_to_dict(request.POST)

# Or

data = querydict_to_dict(request.GET)

You can use getlist method

data = request.POST.getlist('form_4606-parentspass_id','')

This can occur when accidentally posting JSON data with the content-type multipart/form-data, rather than application/json.

I hit this situation when using the Django test HTTP client to create requests against a JSON API and calling:

data = {'a': [1, 2, 3]}
client.post('/api/endpoint/', data=my_data)

rather than:

data = {'a': [1, 2, 3]}
client.post('/api/endpoint/', data=my_data, content_type='application/json')

The simplest way

{**request.GET}

{**request.POST}

or, if you use djangorestframework

{**request.query_params}