So what would you want for existing entries in the table which were added
before you changed the model?
If you are ok with them being empty, you should use:
details = models.CharField(max_length=500, default=“”)
And run migrate again.
If you are ok instead of this column being null, then:
details = models.CharField(max_length=500, null=True, blank=True)
I don’t have a huge experience with migrations, so others can correct me if I
am wrong, but intuitively I feel that defaults should be captured in code than
doing one-off fixes manually while running migrations at the command line.
Thanks,
Sandip
> On Mar 25, 2023, at 12:08 AM, Ebenezer Otchere <swazyman1...@gmail.com> wrote:
>
> Am new in django and have been getting errors in migrations, i need help
> when i try to do migrations it keeps telling me this
> it is impossible to add a non-nullable field 'details' to feature without
> specifying a default. This is because the database needs something to
> populate existing rows.
> Please select a fix:
> 1) Provide a one-off default now (will be set on all existing rows with a
> null value for this column)
> 2) Quit and manually define a default value in models.py.
> Thank you in advance
> from django.db import models
>
> # Create your models here.
>
>
> class feature(models.Model) :
>
> name = models.CharField(max_length=100)
> extra = models.CharField(max_length=100)
> details1 = models.CharField(max_length=500)
>
> class art(models.Model):
>
> name = models.CharField(max_length=100)
> details = models.CharField(max_length=500)
>
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