How to set django model field by name?

Question

This seems like it should be dead simple, so I must be missing something. I just want to set the value of a field in my model instance by name. Say I have:

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Answer 1

We may have to see more code.

setattr(f, 'bar', 'BAR')

should work as this is how Django does it internally.

Make sure you are calling 'save', as well.

Answer 2

If you modify the value via setattr, you need to remember to save the model after modifying it. I've been bitten in the past where I changed the values but forgot to save the model, and got the same result.

setattr(f, 'bar', 'BAR')
f.save()