Resolved: How can I add to my investment balance with django

def create_investment_view(request):
    if request.method == "POST":
        form = InvestmentForm(request.POST)
        if form.is_valid():
            amount = form.cleaned_data['amount']
            user_investment = Investment.objects.all()
            user_investment = user_investment.balance + amount
    else:
        form = InvestmentForm()
    context = {
        'form':form,
    }
    return render (request, 'create-investment.html', context)

class Investment(models.Model):
    balance = models.IntegerField()

class InvestmentForm(forms.Form):
    amount = forms.IntegerField(widget=forms.TextInput(attrs={'required':True, 'max_length':80, 'class' : 'form-control', 'placeholder': ' 1,000,000'}), label=_("Amount to deposit (Ksh.)"), error_messages={ 'invalid': _("This value must contain only numbers.") })```