All the previous answers are great to explain the reason. Just want to add:
if you do not desire empty string in form and in shell, you probably need
to add a min_length validation condition
On Sun, Aug 9, 2020 at 12:42 PM Stephen J. Butler <stephen.but...@gmail.com>
wrote:
> If you look at the documentation for 'blank' it says:
>
> """
> Note that this is different than null. null is purely database-related,
> whereas blank is validation-related. If a field has blank=True, *form
> validation* will allow entry of an empty value. If a field has
> blank=False, the field will be required.
> """
>
> So that is only caught when doing form validation, not when doing model
> validation.
>
>
> On Fri, Aug 7, 2020 at 6:46 AM Juan D. <juan.diaz.ali...@gmail.com> wrote:
>
>> I've created a model with null and blank set to False in robot_name:
>>
>> class Robot(models.Model):
>> robot_name = models.CharField(max_length=200, null=False, blank=False)
>> version = models.CharField(max_length=20, blank=True, null=True)
>>
>> class Meta:
>> unique_together = ('robot_name', 'version',)
>>
>> On the admin website everything works perfectly and I am not allowed to
>> create a robot without a name. However, on the shell:
>>
>> Robot.objects.create(version="test_version")
>>
>> doesn't raise any Exception.
>>
>> What could it be?
>>
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