[Answer]-Django 1.6: Cant modify model in view

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1👍

✅

You don’t save the doctor instance anywhere.

doctor.dislikes += 1
doctor.save()

(You may also consider whether you actually need to store ‘netlikes’ in a field: it may be better to have it as a simple method on the model, which just returns self.likes - self.dislikes.)

👤Daniel Roseman

0👍

I would recommend that you use F() expressions for handling likes and disliked. It will increment them at the database level instead of getting an outdated value from memory. Here is the link to the official documentation on F() expressions

So the code would look something like this

doctor.dislikes = F('dislikes') + 1
doctor.save()
👤user3599948

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