I have this code
json.loads(request.POST.get('mydata',dict()))
But I get this error
No JSON object could be decoded
I just want that if don't have mydata in POST, then I don't get that error.
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2 Answers
Simply:
json.loads(request.POST.get('mydata', '{}'))
Or:
data = json.loads(request.POST['mydata']) if 'mydata' in request.POST else {}
Or:
if 'mydata' in request.POST:
data = json.loads(request.POST['mydata'])
else:
data = {} # or data = None
1 Comment
ButtersB
One snafu here that often catches people is the empty string. If mydata is empty, then this will fail and the default argument in the get won't save you.
loads() takes a json formatted string and turns it into a Python object like dict or list. In your code, you're passing dict() as default value if mydata doesn't exist in request.POST, while it should be a string, like "{}". So you can write -
json_data = json.loads(request.POST.get('mydata', "{}"))
Also remember, the value of request.POST['mydata'] must be JSON formatted, or else you'll get the same error.
