adding new key-value pair to existing data through django ORM

[KAUSHAL SINGH]

Hello,

How can we add new key-value pair to the existing data, through django-orm?

Suppose, created a data with:

instance = Something.objects.create(name='something', data={'a': '1', 'b': '2'})

And now i want to add one more pair: 

{'c': '3'}

is there any method to do so? any help to do so?

[Max Demars]

instance.data['c'] = 3

instance.save()

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[Krzysztof Nazarewski]

Is it possible to do the same in a database query?
I need to update potentially hundreds of objects with a new field.

[Krzysztof Nazarewski]

Ok i found the way, first i need to get handle of HStoreManager:

class Something(models.Model):
    data = hstore.DictionaryField()
    objects = hstore.HStoreManager()

then we can do:

Something.objects.all().hupdate(attr='data',updates={'c':'3'})