Обновление или сохранение поля формы с помощью clean_data в Django не работает

Это просто, но я не знаю, почему это не работает! Я просто хочу установить в поле TOTAL из формы значение PRE-TOTAL. Это обновляет мою FORM_DATA (экземпляр, использующий clean_data), но не сохраняет! Он все еще приходит со значением по умолчанию!!! Кто-нибудь скажет мне, почему?

Вот коды:

MODELS.PY

from django.db import models
from django.utils import timezone

class av_pomades(models.Model):
    cod_prod = models.IntegerField(primary_key=True)
    name = models.CharField(max_length=100)
    price = models.FloatField(default=0)
    pic = models.ImageField(default='default.jpg', blank=True)

    def __str__(self):
        return self.name


pomades_to_chose = (
    ('Suavecito - water based','Suavecito - water based'),
    ('Reuzel Blue - water based','Reuzel Blue - water based'),
    ('Layrite - water based','Layrite - water based'),
    ('Suavecito - oil based','Suavecito - oil based'),
    ('Reuzel Pink - Oil Based','Reuzel Pink - Oil Based'),
    ('Layrite - oil based','Layrite - oil based')
)

class order_form(models.Model):
    pomade = models.CharField(max_length=100, choices=pomades_to_chose)
    amount = models.PositiveIntegerField()
    ord_date = models.DateField(default=timezone.now)
    total = models.FloatField(default=0)

    def __str__(self):
        return self.pomade

FORMS.PY

from dataclasses import fields
from tabnanny import verbose
from django import forms
from . import models

class order_forms(forms.ModelForm):
    class Meta:
        # model that the fields will come from
        model = models.order_form
        # chosing the fields to be displayed
        fields = ['pomade', 'amount', 'total']  

VIEWS.PY

from django.shortcuts import render, redirect
from .models import av_pomades, order_form
from django.http import HttpResponse
from django.contrib.auth.decorators import login_required
from . import forms

@login_required(login_url='accounts:login')
def purchase(request):
    if request.method == 'POST':
        form = forms.order_forms(request.POST)
        if form.is_valid():
            # creating a cleanned data instace
            form_data = form.cleaned_data
            ch_pomade = str(form_data['pomade'])

            # retrieving the right price from the selected product 
            pomades_prices = av_pomades.objects.all().values('name','price')        
            for pomades_data in pomades_prices:
                if ch_pomade in pomades_data['name']:
                    ch_pomade_price = pomades_data['price']

            # setting the total price
            famount = int(form_data['amount'])
            pre_total = ch_pomade_price * famount
            
            # updating the price in the for to be recorded in DB
            
            **# HERE IS THE PROBLEMATIC PART I GUESS**
            form_data['total'] = pre_total
            print(form_data)           
            

            form.save()
            return redirect('products:order_success')
    else:
        form = forms.order_forms()
    return render(request,'basquet.html', {'order_form':form})

Вернуться на верх