How to update existing model instance from dictionary value

Question

Given the model instance, for example StackOverflow is the model, and

 obj = StackOverflow.objects.get(..somecondition)
 dict  = { 'rating' : 3, 'field1' : 'question', field2 : 'answer' }

StackOverflow model has all the keys that are available int the dict as a member variable.

I want to update obj with dict values.

How can i achieve the same?

Answer 1

obj = StackOverflow.objects.get(pk=1)
d  = { 'rating' : 3, 'field1' : 'question', 'field2' : 'answer' }

for i in d:
    setattr(obj, i, d[i])
obj.save()

This will work, assuming the dictionary keys correspond to fields in the StackOverflow model, and the dictionary values are valid field values.