How can I Generate 10 Unique digits in Model Form and Pass Form Context Variable in Django Class Based ListView

Question

I am new to Django Class Based Views and I am working on a project where on the template I want to have Form for creating customer accounts on the left and list of existing customers on the right. So far I have the list of existing customers displayed but for the form I don't know how to pass its variable context to the same template, or it is not possible to Pass a Form that would be submitted inside a ListView Method. And I also want to generate unique account numbers of 10 Digits in ModelForm which I want the form field to be auto-filled and disabled Here is my form code:

import secrets

#I want to Generate Account Number of 10 Digits but getting only 2

account = secrets.randbits(7)

#class for Customer Account Form

class CustomerAccountForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
    super().init(*args, **kwargs)

    self.fields['accountnumber'].initial = account

class Meta:
    model = Customer
    fields = ['accountnumber','surname','othernames','address','phone']

Code for my views (ListView)

class CustomerListView(ListView):
    model = Customer
    form_class = CustomerAccountForm
    template_name = 'dashboard/customers.html'
    #Function to get context data from queries
    def get_context_data(self, **kwargs):
        context_data = super().get_context_data(**kwargs)
        #Get Day of today from current date and time
        now = datetime.datetime.now()
        #Get the date today
        date_today = datetime.datetime.now().date
        #Count Number of Withdrawals Today and passing in context
        context_data['count_withdrawals_today'] = Witdrawal.objects.filter(date__year=now.year, date__month=now.month, date__day=now.day).count()
        context_data['count_deposits_today'] = Deposit.objects.filter(date__year=now.year, date__month=now.month, date__day=now.day).count()
        context_data['count_accounts'] = Customer.objects.count()
        context_data['count_users'] = User.objects.count()
        #Calculate today Deposit Today
        context_data['total_deposit']= Deposit.objects.filter(date__year=now.year, date__month=now.month, date__day=now.day).aggregate(total_deposit=Sum('deposit_amount')).get('total_deposit') or 0
        #Calculate today Withdrawal Today
        context_data['total_withdrawal']= Witdrawal.objects.filter(date__year=now.year, date__month=now.month, date__day=now.day).aggregate(total_withdrawal=Sum('withdrawal_amount')).get('total_withdrawal') or 0
        return context_data

Someone should please help me on how this is properly done and the form would be submitted successfully. Thanks in anticipation for your answer.

Answer 1

After going through many tutorials and blogs on Django Class Based Views with ListViews for Forms, I discovered that ListViews was designed to populate Model items while FormViews is designed for creating and processing forms both can't be used on one template. Although many developers have had a way around it with the use of Multiple Mixins but no best practice has be mentioned for or against their findings yet. In these case, I concluded that for a Django Template to be able to process Model Form and at the same time Populate Database items, it needs not to use Class Based Views but Function Based Views.

Answer 2

secrets.randbits(k) generates a random integer within a bit range.

For k=4 then Unsigned integer From 0 to 15.

For k=8 then Unsigned integer From 0 to 255.

For k=16 then Unsigned integer From 0 to 65,535, and so on.

If you want 10 random digits then you can use for example:

import random

account = "".join(str(random.randint(0, 9)) for _ in range(10))