Hi there, I have two apps in my Django Project, one is named as index and other is named as cart.
In index.models, I have a model TwoPieceSuit(), and in cart.models, I have two models viz. Cart() and CartManager() (just to make sure the cart is not created if it already exists and if the user was not logged in while adding items to cart, so after logging in, the system does not create new cart).
Well, the problem is when I try to get the Cart items by writing cart_obj.two_piece_suits, I get empty results. I am basically wanting to get items of the cart, and then add up their prices and update the total attribute of Cart() instance. I have added two items in index.models.TwoPieceSuit(). Also I have a ManyToMany relation between cart.models.Cart() and index.models.TwoPieceSuit(). But still I see empty results.
My index.models.py is:
import os
from django.db import models
from django.utils.text import slugify
def get_file_ext(filepath):
base_name = os.path.basename(filepath)
name, ext = os.path.splitext(base_name)
return name, ext
def upload_image_path(instance, filepath):
name, ext = get_file_ext(filepath)
filename = instance.fabric + '-' + instance.lining + '-' + instance.buttons + '-' + \
instance.button_hole_thread + '-' + instance.buttoning + '-' + instance.lapel + '-' + \
instance.pockets + '-' + instance.vent + '-' + instance.contrasts + '-' + \
instance.trouser_pockets + '-' + instance.trouser_buttoning + '-' + \
instance.trouser_back_pocket + '-' + instance.trouser_turn_up + ext
return "products/{filename}".format(filename=filename)
# Create your models here.
class Fabric(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'fabrics/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class Lining(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'linings/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class Button(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'buttons/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class ButtonHoleThread(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'button-hole-threads/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class Buttoning(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'buttonings/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class Lapel(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'lapels/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class Pocket(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'pockets/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class Vent(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'vents/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class Contrast(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'contrasts/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class TrouserPocket(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'trouser-pockets/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class TrouserButtoning(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'trouser-buttonings/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class TrouserBackPocket(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'trouser-back-pockets/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
class TrouserTurnUp(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = 'trouser-turn-ups/', null = True, verbose_name = "Picture")
def __str__(self):
return f"{self.title}"
FABRICS = []
LININGS = []
BUTTONS = []
BUTTON_HOLE_THREADS = []
BUTTONINGS = []
LAPELS = []
POCKETS = []
VENTS = []
CONTRASTS = []
TROUSER_POCKETS = []
TROUSER_BUTTONINGS = []
TROUSER_BACK_POCKETS = []
TROUSER_TURN_UPS = []
for item in Fabric.objects.all():
FABRICS.append((item.title.lower(), item.title))
FABRICS = tuple(FABRICS)
for item in Lining.objects.all():
LININGS.append((item.title.lower(), item.title))
LININGS = tuple(LININGS)
for item in Button.objects.all():
BUTTONS.append((item.title.lower(), item.title))
BUTTONS = tuple(BUTTONS)
for item in ButtonHoleThread.objects.all():
BUTTON_HOLE_THREADS.append((item.title.lower(), item.title))
BUTTON_HOLE_THREADS = tuple(BUTTON_HOLE_THREADS)
for item in Buttoning.objects.all():
BUTTONINGS.append((item.title.lower(), item.title))
BUTTONINGS = tuple(BUTTONINGS)
for item in Lapel.objects.all():
LAPELS.append((item.title.lower(), item.title))
LAPELS = tuple(LAPELS)
for item in Pocket.objects.all():
POCKETS.append((item.title.lower(), item.title))
POCKETS = tuple(POCKETS)
for item in Vent.objects.all():
VENTS.append((item.title.lower(), item.title))
VENTS = tuple(VENTS)
for item in Contrast.objects.all():
CONTRASTS.append((item.title.lower(), item.title))
CONTRASTS = tuple(CONTRASTS)
for item in TrouserPocket.objects.all():
TROUSER_POCKETS.append((item.title.lower(), item.title))
TROUSER_POCKETS = tuple(TROUSER_POCKETS)
for item in TrouserButtoning.objects.all():
TROUSER_BUTTONINGS.append((item.title.lower(), item.title))
TROUSER_BUTTONINGS = tuple(TROUSER_BUTTONINGS)
for item in TrouserBackPocket.objects.all():
TROUSER_BACK_POCKETS.append((item.title.lower(), item.title))
TROUSER_BACK_POCKETS = tuple(TROUSER_BACK_POCKETS)
for item in TrouserTurnUp.objects.all():
TROUSER_TURN_UPS.append((item.title.lower(), item.title))
TROUSER_TURN_UPS = tuple(TROUSER_TURN_UPS)
class TwoPieceSuit(models.Model):
title = models.CharField(max_length = 100, verbose_name = "Title")
img = models.FileField(upload_to = upload_image_path, null = True, \
verbose_name = "Picture")
fabric = models.CharField(max_length = 100, choices = FABRICS, \
null = True)
lining = models.CharField(max_length = 100, choices = LININGS, \
null = True)
buttons = models.CharField(max_length = 100, choices = BUTTONS, \
null = True)
button_hole_thread = models.CharField(max_length = 100, \
choices = BUTTON_HOLE_THREADS, null = True, \
verbose_name = "Button Hole Threads")
buttoning = models.CharField(max_length = 100, \
choices = BUTTONINGS, null = True)
lapel = models.CharField(max_length = 100, choices = LAPELS, \
null = True)
pockets = models.CharField(max_length = 100, choices = POCKETS, \
null = True)
vent = models.CharField(max_length = 100, choices = VENTS, \
null = True)
contrasts = models.CharField(max_length = 100, choices = CONTRASTS, \
null = True)
trouser_pockets = models.CharField(max_length = 100, \
choices = TROUSER_POCKETS, null = True, \
verbose_name = "Trouser Pockets")
trouser_buttoning = models.CharField(max_length = 100, \
choices = TROUSER_BUTTONINGS, null = True, \
verbose_name = "Trouser Buttoning")
trouser_back_pocket = models.CharField(max_length = 100, \
choices = TROUSER_BACK_POCKETS, null = True, \
verbose_name = "Trouser Back Pocket")
trouser_turn_up = models.CharField(max_length = 100, \
choices = TROUSER_TURN_UPS, null = True, \
verbose_name = "Trouser Turn Up")
price = models.DecimalField(decimal_places = 2, max_digits = 20, default = 99.99)
slug = models.SlugField(null = True, blank = True, db_index = True)
def save(self, *args, **kwargs):
self.slug = slugify(self.fabric + self.lining + self.buttons + \
self.button_hole_thread + self.buttoning + self.lapel + \
self.pockets + self.vent + self.contrasts + \
self.trouser_pockets + self.trouser_buttoning + \
self.trouser_back_pocket + self.trouser_turn_up)
super().save(*args, **kwargs)
def __str__(self):
return f"{self.title}"
My cart.models.py is
from django.conf import settings
from django.db import models
from index.models import TwoPieceSuit
User = settings.AUTH_USER_MODEL
# Create your models here.
class CartManager(models.Manager):
def new_or_get(self, request):
cart_id = request.session.get("cart_id", None)
qs = self.get_queryset().filter(id = cart_id)
if qs.count() == 1:
new_obj = False
cart_obj = qs.first()
if request.user.is_authenticated and cart_obj.user is None:
cart_obj.user = request.user
cart_obj.save()
else:
cart_obj = Cart.objects.new(user = request.user)
new_obj = True
request.session["cart_id"] = cart_obj.id
return cart_obj, new_obj
def new(self, user = None):
user_obj = None
if user is not None:
if user.is_authenticated:
user_obj = user
return self.model.objects.create(user = user_obj)
class Cart(models.Model):
user = models.ForeignKey(User, null = True, blank = True, on_delete = models.CASCADE)
two_piece_suits = models.ManyToManyField(TwoPieceSuit, blank = True)
total = models.DecimalField(default = 00.00, max_digits = 100, decimal_places = 2)
updated = models.DateTimeField(auto_now = True)
timestamp = models.DateTimeField(auto_now_add = True)
objects = CartManager()
def __str__(self):
return str(self.id)
My cart.views.py is:
from django.shortcuts import render
from .models import Cart, CartManager
# Create your views here.
def cart_home(request):
cart_obj, new_obj = Cart.objects.new_or_get(request)
print(cart_obj.two_piece_suits)
two_piece_suits = cart_obj.two_piece_suits.all()
total = 0
for item in two_piece_suits:
print(item)
print(item.price)
total = total + item.price
cart_obj.total = total
cart_obj.save()
return render(request, "cart/home.html", {})
I am tired of working it around and getting no results. Any help would be appreciated
