AttributeError: type object 'Product' has no attribute 'objects'

Python 3.8.3
asgiref             3.3.1
Django              2.2
django-crispy-forms 1.10.0
djangorestframework 3.11.1
Pillow              7.2.0
pip                 19.2.3
psycopg2            2.8.6
pytz                2020.1
setuptools          41.2.0
sqlparse            0.3.1

Sorry, I’m not sure where there is an abnormality in a situation, can you mention me?
Then I posted error information in stackoverflow and presented it with my code, the link is AttributeError: type object 'Product' has no attribute 'objects'
, You can click the link to enter and watch…Thank you.

Everyone, help me think about the screen. After I clicked on the product I need add to car, an error appeared, and the product could not be added to my shopping cart. May I ask if this message appears.
File "C:UsersgeorgiawangPycharmProjectslibshopappstoreviews.py", line 195, in updateItem**
product = Product.objects.get(id=productId)
AttributeError: type object’Product’ has no attribute’objects’**
Is it because views.py is damaged?

Because "POST /store/update_item/ HTTP/1.1" 500 59 the information came out a bit unexpectedly, after all, I didn’t mess with the program. I don’t know which side of the program affects QWQ.

Hope to mention me a bit, thank you very much.

遇到問題是:The problems encountered are:

product = Product.objects.get(id=productId)
AttributeError: type object 'Product' has no attribute 'objects'


Watching for file changes with StatReloader
Performing system checks...

System check identified no issues (0 silenced).
February 22, 2021 - 13:09:19
Django version 2.2, using settings 'libshopapp.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
[22/Feb/2021 13:09:22] "GET /store/ HTTP/1.1" 200 32153
Action: add
Product: 135


1.
Traceback (most recent call last):
  File "D:pythonPython38libsite-packagesdjangocorehandlersexception.py", line 34, in inner
    response = get_response(request)
  File "D:pythonPython38libsite-packagesdjangocorehandlersbase.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "D:pythonPython38libsite-packagesdjangocorehandlersbase.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:UsersgeorgiawangPycharmProjectslibshopappstoreviews.py", line 195, in updateItem**
    product = Product.objects.get(id=productId)
    AttributeError: type object 'Product' has no attribute 'objects'**

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:pythonPython38libsite-packagesdjangocorehandlersexception.py", line 34, in inner
    response = get_response(request)
  File "D:pythonPython38libsite-packagesdjangoutilsdeprecation.py", line 94, in __call__
    response = response or self.get_response(request)
  File "D:pythonPython38libsite-packagesdjangocorehandlersexception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "D:pythonPython38libsite-packagesdjangocorehandlersexception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())

2.

Traceback (most recent call last):
  File "D:pythonPython38libwsgirefhandlers.py", line 137, in run
    self.result = application(self.environ, self.start_response)
  File "D:pythonPython38libsite-packagesdjangocontribstaticfileshandlers.py", line 65, in __call__
    return self.application(environ, start_response)
  File "D:pythonPython38libsite-packagesdjangocorehandlerswsgi.py", line 141, in __call__
    response = self.get_response(request)
  File "D:pythonPython38libsite-packagesdjangocorehandlersbase.py", line 75, in get_response
    response = self._middleware_chain(request)
  File "D:pythonPython38libsite-packagesdjangocorehandlersexception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "D:pythonPython38libsite-packagesdjangocorehandlersexception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "D:pythonPython38libsite-packagesdjangocorehandlersexception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "D:pythonPython38libsite-packagesdjangoviewsdebug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "D:pythonPython38libsite-packagesdjangoviewsdebug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp950' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence

**[22/Feb/2021 13:09:27] "POST /store/update_item/ HTTP/1.1" 500 59**

請幫忙看看，謝謝?
please help to see, thank you.

//////////////////////////////////////////////////////code//////////////////////////////////////////////

/// store / models.py ///

from django.contrib.auth.models import User
from django.db import models
from django.urls import reverse

from django.utils import timezone

class Product(models.Model):
    name     = models.CharField(max_length=200)
    content  = models.TextField(default='')
    price    = models.DecimalField(max_digits=7, decimal_places=2)
    digital  = models.BooleanField(default=False, null=True, blank=True)
    draft    = models.BooleanField(default=False)
    image    = models.ImageField(
        upload_to=imgs,
        null=True,
        blank=True,
        width_field="width_field",
        height_field="height_field",
    )
    height_field = models.IntegerField(default=0)
    width_field  = models.IntegerField(default=0)
    updated      = models.DateTimeField(auto_now=True, auto_now_add=False)
    timestamp    = models.DateTimeField(auto_now=True, auto_now_add=False)
    products = ProductManage()

    def __unicode__(self):
        return self.name

    def __str__(self):
        return self.name

    @property
    def imageURL(self):
        try:
            url = self.image.url
        except:
            url = ''
        return url

    def get_absolute_url(self):
        return reverse('store:detail', kwargs={'id': self.id})

    class Meta:
        ordering = ["-timestamp", "-updated"]

/// home / urls.py ///

from django.urls import path
from . import views

app_name = 'home'

urlpatterns = [
    # path('order/', views.order, name='order'),
    path('social/', views.socialview, name='social'),
    path('about/', views.aboutview, name='about'),
    path('contact/', views.contact, name='contact'),
    path('', views.index, name='index'),
]

/// store / urls.py ///

from django.urls import path
from . import views

app_name = 'store'

urlpatterns = [
    # Leave as empty string for base url
    path('', views.store, name='store'),
    path('cart/', views.cart, name='cart'),

    path('create/', views.productCreate, name='create'),
    path('<int:id>/', views.productDetail, name='detail'),
    path('<int:id>/update/', views.productUpdate, name='update'),
    path('<int:id>/delete/', views.productDelete, name='delete'),

    path('checkout/', views.checkout, name='checkout'),

    path('update_item/', views.updateItem, name='update_item'),
    # path('update_item/', views.updateItem, name='update_item'),
    path('process_order/', views.processOrder, name='process_order'),

    path('searchbar/', views.searchbar, name='searchbar'),
]

/// store / views.py ///

import datetime
import json

from django.contrib import messages
from django.core.paginator import Paginator, PageNotAnInteger, EmptyPage
from django.http import JsonResponse, HttpResponseRedirect, Http404
from django.shortcuts import render, get_object_or_404, redirect

from .forms import ProductForms
from .models import Product
from .utils import cartData, guestOrder

from django.utils import timezone

def updateItem(request):
    data = json.loads(request.body)
    productId = data['productId']
    action = data['action']
    print('Action:', action)
    print('Product:', productId)

    customer = request.user.customer
    product = Product.objects.get(id=productId)
    order, created = Order.objects.get_or_create(customer=customer, complete=False)

    orderItem, created = OrderItem.objects.get_or_create(order=order, product=product)

    if action == 'add':
        orderItem.quantity = (orderItem.quantity + 1)
    elif action == 'remove':
        orderItem.quantity = (orderItem.quantity - 1)

    orderItem.save()

    if orderItem.quantity <= 0:
        orderItem.delete()

    return JsonResponse('Item was added', safe=False)

/// cart.js ///

question: "POST /store/update_item/ HTTP/1.1" 500 59

var updateBtns = document.getElementsByClassName('update-cart')

for (i = 0; i < updateBtns.length; i++) {
    updateBtns[i].addEventListener('click', function(){
        var productId = this.dataset.product
        var action = this.dataset.action
        console.log('productId:', productId, 'Action:', action)
        console.log('USER:', user)

        if (user == 'AnonymousUser'){
            addCookieItem(productId, action)
        }else{
            updateUserOrder(productId, action)
        }
    })
}

function updateUserOrder(productId, action){
    console.log('User is authenticated, sending data...')

        var url = '/store/update_item/'

        fetch(url, {
            method:'POST',
            headers:{
                'Content-Type':'application/json',
                'X-CSRFToken':csrftoken,
            },
            body:JSON.stringify({'productId':productId, 'action':action})
        })
        .then((response) => {
           return response.json();
        })
        .then((data) => {
            location.reload()
        });
}

function addCookieItem(productId, action){
    console.log('User is not authenticated')

    if (action == 'add'){
        if (cart[productId] == undefined){
        cart[productId] = {'quantity':1}

        }else{
            cart[productId]['quantity'] += 1
        }
    }

    if (action == 'remove'){
        cart[productId]['quantity'] -= 1

        if (cart[productId]['quantity'] <= 0){
            console.log('Item should be deleted')
            delete cart[productId];
        }
    }
    console.log('CART:', cart)
    document.cookie ='cart=' + JSON.stringify(cart) + ";domain=;path=/"

    location.reload()
}

/// froms.py ///

from django import forms
from store.models import Product, RegistrationData

class ProductForms(forms.ModelForm):
    class Meta:
        model = Product
        fields = [
            'name',
            'price',
            'digital',
            'image',
            'width_field',
            'height_field',
            'content',
        ]