Using Signals and method in models to automate key and qrcode>> help

Hello ,

i have a simple model that create additional one to one relation to User a profile like table with tables of pytop code and qrcode associated per user.

I had success to create the pytop code ,but the qr code i have difficulty to achieve it since i need to get,

The current users created and the pyotp code, on evry user creation i have signals receivers that create the additional profile associated tables , but i need your advice ,on methods attached to the model that will create automatically the request tables , what is the best practice to achieve such task.

Please advice

Thanks

The profile model

from django.db import models

from django.contrib.auth.models import User

import pyotp

import qrcode

# Create your models here.

def otp_google_auth(code,usr):

        print('details: ',code,usr)

        googleauth = pyotp.totp.TOTP(code).provisioning_uri(name=str(usr) + '@google.com', issuer_name='Secure Dalet')

        qr = qrcode.QRCode(

        version=1,

        error_correction=qrcode.constants.ERROR_CORRECT_L,

        box_size=10,

        border=4,

        )

        qr.add_data(googleauth)

        qr.make(fit=True)

        img = qr.make_image(fill_color="black", back_color="white")

        google_qr = img     

class Profile(models.Model):

    

    user = models.OneToOneField(User, on_delete=models.CASCADE, blank=True, null=True)

    #qr_creation = otp_google_auth(secret, user)

    otp_code = models.CharField(max_length=200, default=token_creation)

    user_qr =  models.ImageField(upload_to='images/', default= None)

    last_name = models.CharField(max_length=200, null=True, blank=True)

    phone = models.CharField(max_length=200, null=True, blank=True)

    def __str__(self):

        return str(self.user)

    def token_creation(self):

        secret = pyotp.random_base32()

        self.otp_code.save(secret, save=False)

        super().save()

The  signals for profile table

from django.db.models.signals import post_save

from django.dispatch import receiver

from django.contrib.auth.models import User

from .models import Profile

@receiver(post_save, sender=User)

def create_profile(sender, instance, created, **kwargs):

    

    if created:

        Profile.objects.create(user=instance)

        print('Profile created!')

#post_save.connect(create_profile, sender=User)

@receiver(post_save, sender=User)

def update_profile(sender, instance, created, **kwargs):

    

    if created == False:

        instance.profile.save()

        print('Profile updated!')

    

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