I'm trying to use Hashids which works when I manually input the number to encode, but doesn't work if I try to get it to encode the Primary Key from each table row.
models.py
from hashids import Hashids
from django.db import models
class AddToDatabase(models.Model):
hashids = Hashids()
# hasids.encode(123) works correctly
slug = models.CharField(default=hashids.encode(pk), max_length=12)
The above says pk is undefined, regardless of what I try to import.
You cannot do what you are trying now(Since pk will get value only after INSERT operation). One option is
class AddToDatabase(models.Model):
hashids = Hashids()
slug = models.CharField(max_length=12)
def save(self, *args, **kwargs):
super(AddToDatabase, self).save(*args, **kwargs)
self.slug = self.hashids.encode(self.pk)
super(AddToDatabase, self).save(*args, **kwargs)
Another solution is calculating hashid on demand
class AddToDatabase(models.Model):
@property
def slug(self):
hashids = Hashids()
return hashids.encode(self.pk)