thank you. you give me more confidence
вторник, 30 декабря 2014 г., 17:19:53 UTC+3 пользователь Vijay Khemlani
написал:
>
> If you want to change a user's cashbox then yes, you would need to use
> your solution, but it's easier to get c1 by just saying
>
> c1 = user.cashbox
>
> instead of Cashbox.objects.get....
>
> A more definite solution would be to add the OneToOne relation to the User
> model instead of the Cashbox object, but I'm not sure how that works in
> your project.
>
> On Tue, Dec 30, 2014 at 6:56 AM, madjardi <malinich...@gmail.com
> <javascript:>> wrote:
>
>> class Cashbox(models.Model):
>> cashier = models.OneToOneField('User', null=True, blank=True,
>> related_name='cashbox', on_delete=models.SET_NULL)
>>
>> in other code:
>> User.object.get(pk=1)
>> user.cashbox = None
>>
>> AttributeError: 'NoneType' object has no attribute 'cashier_id'
>>
>> one version solving is:
>> c1 = Cashbox.objects.get(pk=user.cashbox.id)
>> c1.cashier = None
>> c1.save()
>>
>>
>> c2 = Cashbox.object.get(pk=10)
>> c2.cashier = user
>> c2.save()
>>
>>
>> i need get other Cashbox to set link None. Why i need do so. is there a
>> better solution.
>>
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