Confusion in form.save() in two different models - html

Question

I am having problems in displaying the page due to models. I honestly don't know what the problem is and every solution I see here is beyond me, since I am only beginning to learn Django. Here's the summary:
I have created two forms from two models(which are interrelated) and rendering the data from those forms in a single page. The data displays fine on the dashboard panel and the submission does save it to the database. I have tried overriding the save function in form but with no result. However, whenever I try and load the pages containing same data (display pages like home for customers)I am hit with:
Traceback (most recent call last):
File "C:\Users\shahi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\shahi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\shahi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:\Softwarica\3rd semester\Modern Web\Assignment\Project - Farmer's Market\farmersmarket\home\views.py", line 9, in index
order, created = Order.objects.get_or_create(customer=customer, complete=False)
File "C:\Users\shahi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\models\manager.py", line 82, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Users\shahi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\models\query.py", line 559, in get_or_create
return self.get(**kwargs), False
File "C:\Users\shahi\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\models\query.py", line 419, in get
raise self.model.MultipleObjectsReturned(
shop.models.Order.MultipleObjectsReturned: get() returned more than one Order -- it returned 2!
The code in forms.py:
from django.forms import ModelForm
from shop.models import *
class OrderForm(ModelForm):
class Meta:
model = Order
fields = ('customer',)
class OrderItemForm(ModelForm):
class Meta:
model = OrderItem
fields = ('item', 'status',)
views.py
def createOrder(request):
form_order = OrderForm()
form_orderitem = OrderItemForm()
if request.method == 'POST':
# print('Printing POST', request.POST)
form_order = OrderForm(request.POST)
form_orderitem = OrderItemForm(request.POST)
if form_order.is_valid() and form_orderitem.is_valid():
form_order.save()
form_orderitem.save()
return redirect('/dashboard')
context = {'form_order': form_order, 'form_orderitem': form_orderitem}
return render(request, 'dashboard/order_form.html', context)
I have tried overriding the save function in form but with no result.

Answer 1

get() cannot be used for when more than 1 objects are returned. try with filter().
Do check first() or last(), if it helps you.