Hi , I am doing : product_obj=Product.objects.get(id=product_id) in the cart_update function in views.py
but when trying to print this object... i am not getting anything... is this function is not working? On Wed, Jun 23, 2021 at 11:38 PM Aadil Rashid <[email protected]> wrote: > Pass I'd to the view you are you are using, > And then get products thrid that I'd by simple ORM quriy > > Product = model name.objects.get(id=id) > > On Wed, 23 Jun, 2021, 11:35 PM Parul., <[email protected]> wrote: > >> Hi, >> I am working on an ecommerce website. I am facing an error. Can anyone >> please help me solve this error. >> I am not able to fetch the PRODUCT_ID >> >> 1. views.py (APP-CART) >> >> ------------------------------------------------------------------------------------------------------- >> from django.shortcuts import render,redirect >> from .models import Cart >> from new_app.models import Product >> >> # Create your views here. >> >> >> def cart_home(request): >> >> cart_obj,new_obj=Cart.objects.new_or_get(request) >> products=Cart.objects.all() >> >> >> >> return render(request,'carts/home.html',{}) >> >> >> def cart_update(request): >> print(request.POST) >> # print(dict(request.POST.items())) >> # print("in func") >> >> product_id=1 >> print('id below') >> print(product_id) // not able to get the value of product id in >> console >> product_obj=Product.objects.get(id=product_id) >> cart_obj,new_obj=Cart.objects.new_or_get(request) >> if product_obj in cart_obj.products.all(): >> cart_obj.products.remove(product_obj) >> else: >> cart_obj.products.add(product_obj) >> return redirect('home') >> >> >> >> >> -------------------------------------------------------------------------------------------- >> 2. models.py (cart) >> >> >> from django.db import models >> from django.conf import settings >> from new_app.models import Product >> from django.db.models.signals import pre_save,post_save,m2m_changed >> >> >> >> User=settings.AUTH_USER_MODEL >> >> 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) >> qs=self.get_queryset().only('products') >> >> print(qs) >> if qs.count()==1: >> new_obj=False >> cart_obj=qs.first() >> print('cart obj below') >> print(cart_obj) >> 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_cart(user=request.user) >> new_obj=True >> request.session['cart_id']=cart_obj.id >> return cart_obj,new_obj >> >> def new_cart(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) >> products=models.ManyToManyField(Product,blank=True) >> >> subtotal=models.DecimalField(default=0.00,max_digits=100,decimal_places=2) >> >> >> total=models.DecimalField(default=0.00,max_digits=100,decimal_places=2) >> timestamp=models.DateTimeField(auto_now_add=True) >> updated=models.DateTimeField(auto_now=True) >> >> objects=CartManager() >> >> def __str__(self): >> return str(self.id) >> >> >> def m2m_changed_cart_receiver(sender,instance,action,*args,**kwargs): >> print(action) >> if action=='post_add' or action=='post_remove' or action=='clear': >> products=instance.products.all() >> total=0 >> for x in products: >> total += x.price >> if instance.subtotal != total: >> instance.subtotal=total >> instance.save() >> >> m2m_changed.connect(m2m_changed_cart_receiver,sender=Cart.products.through) >> >> >> def pre_save_cart_receiver(sender,instance,*args,**kwargs): >> if instance.subtotal>0: >> instance.total=instance.subtotal + 10 >> else: >> instance.total=0.00 >> >> pre_save.connect(pre_save_cart_receiver,sender=Cart) >> >> >> >> >> OUTPUT IN CONSOLE: >> >> <QueryDict: {'csrfmiddlewaretoken': >> ['FMk2gTq6XXxZ2HU40I6h4b3WtPl59Drf1urwUNufDZUeSFPMzGNwU4L1QuGCiCbB'], >> 'product_id': >> ['']}> -------- GETTING EMPTY DICTIONARY INSTEAD OF GETTING PRODUCT >> ID i.e. 1 >> id below >> 1 >> <QuerySet [<Cart: 13>]> >> >> >> So, I am unable to fetch the productc id there besides the csrf.... >> i tried to individually print the product id.. which came as 1...(written >> under"id below" in output) >> >> Can anyone pls help me with this. >> >> >> >> >> Also, adding update_cart.html >> <form method='POST' action='{% url 'update' %}'class="form ">{% >> csrf_token %} >> <input type="hidden" name='product_id' vallue= "{{ product_id }}"> >> {% if product in cart.products.all %} >> <button type="submit" class="btn btn-link">remove</button> >> {% else %} >> <button type="submit" class="btn btn-success">add to cart</button> >> {% endif %} >> >> </form> >> >> >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/django-users/CAHjHRFpf_EfU%3DSSFFTMOeb5JkuNKL%3DuSNVtp782A2r_R-M0_DA%40mail.gmail.com >> <https://groups.google.com/d/msgid/django-users/CAHjHRFpf_EfU%3DSSFFTMOeb5JkuNKL%3DuSNVtp782A2r_R-M0_DA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/CAAYXZx-x2ymvZ2sWiLK9RoEdxZJWa8-5po%2BtJqu04z9UB7cqkA%40mail.gmail.com > <https://groups.google.com/d/msgid/django-users/CAAYXZx-x2ymvZ2sWiLK9RoEdxZJWa8-5po%2BtJqu04z9UB7cqkA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAHjHRFpn9RjG6ZJzVs3k4oVie-fp8%2BQ%3D8hqBh-bRxHUBMrCMZA%40mail.gmail.com.
