I'm trying to overwrite the pk of my models to use a random generator.
Here's the model field:
pk = models.AutoField(auto_created=True, primary_key=True, verbose_name='ID', default=genkey)
and the keygenerator:
def genkey():
return random.randrange(1,142857)
So, I would like to make the autofield to execute the genkey function as much as possible until it gets a non-used key. Is there an attribute that I didn't find or do I need to code it in the generator (by getting all the used keys) ?
My main goal is to make a generator as generic as possible, not define a custom generator for each model.
After making some research and tests, I ended up creating a class.
class RandomIDKey(models.Model):
id = models.IntegerField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name='ID',
unique=True,
db_index=True,
editable=False
)
def save(self, *args, **kwargs):
if not self.id:
self.id = genkey(type(self))
super().save(*args, **kwargs)
class Meta:
abstract = True
with a public function:
def genkey(model):
generated_key = random.randrange(1, 2147483648)
if model.objects.filter(pk=generated_key).exists():
generated_key = genkey(model)
return generated_key
Using an AutoField is a bad idea since the field is not auto-generated by the database, hence the IntegerField
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