[Answered ]-How to filter with a non non-model field?

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You could make the code field a model field and generate the random code via its default property:

from django.utils.crypto import get_random_string   

def set_code():
    return get_random_string(length=6)

class Competition(models.Model):
        ...
        #we use set_code as a callable as per the Field.default docs
        code = models.CharField(max_length=6, default=set_code)
        ....

One caveat: Any existing records will all have the same code value after a migration, so you’d need to cycle through them and reset via set_code(). New records should be fine.

👤SamSparx

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