я получаю эту ошибку: - Бэкэнд базы данных не принимает 0 в качестве значения для AutoField - PullRequest
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я получаю эту ошибку: - Бэкэнд базы данных не принимает 0 в качестве значения для AutoField

0 голосов
/ 25 апреля 2020

Я пытался отладить эту ошибку со всеми ответами на stackoverflow, но я не нашел их полезными, поэтому я отдельно запрашиваю об этом.

Я пытаюсь отправить данные формы в модель владельца. Я использую update_or_create () для обновления данных формы до пустой модели.

вот ошибка, которую я получаю: - 

 The database backend does not accept 0 as a value for AutoField.

Вот модель, для которой я пытаюсь обновить данные (модель владельца) : - 

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


class Owner(models.Model):
    user = models.OneToOneField(User,on_delete=models.CASCADE, default=False)
    fname = models.CharField(max_length=100, default=False)
    lname=models.CharField(max_length=100, default=False)
    bday = models.DateField(default=False)
    city = models.CharField(max_length=100, default=False)
    taluka = models.CharField(max_length=100, default=False)
    district = models.CharField(max_length=100, default=False)
    state = models.CharField(max_length=100, default=False)
    pincode = models.IntegerField(default=False)
    shop = models.CharField(max_length=200, default=False)
    photo = models.ImageField(upload_to='photos/%Y/%m/%d/')
    phone = models.CharField(max_length=20, default=False)
    email = models.CharField(max_length=20, default=False)


    def __str__(self):
        return self.name

Вот view.py, где я обновляю данные моей формы: - 

def dashboard(request):
    user_contacts=Contacts.objects.order_by('-contact_date').filter(user_id=request.user.id)
    owners=Owner.objects.filter(user_id=request.user.id)

    context = {'contacts': user_contacts,
               'owner': owners}

    if request.method == 'POST':
        username = request.POST['username']
        fname = request.POST['first_name']
        lname = request.POST['last_name']
        email = request.POST['email']
        phone = request.POST['phone']
        photo = request.POST['photo']
        bday = request.POST['bdate']
        city = request.POST['city']
        tal = request.POST['tal']
        dist = request.POST['dist']
        state = request.POST['state']
        pincode = request.POST['pincode']
        shop = request.POST['shop']

        obj, created = Owner.objects.update_or_create(
            user__username=username,
            defaults={'fname': fname, 'lname':lname, 'email':email, 'phone':phone, 'photo':photo, 'bday':bday, 'city': city,
                      'taluka':tal, 'district':dist, 'state':state, 'pincode': pincode, 'shop':shop, }
        )
        if created==True:
            print("Data is updated")
        else:
            print("Data is not updated")

        messages.success(request, "Your Profile has been Updated Successfully")

    return render(request, 'accounts/dashboard.html', context)

вот полная трассировка стека: - 

    Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/accounts/dashboard

Django Version: 3.0.3
Python Version: 3.7.2
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'listings.apps.ListingsConfig',
 'owners.apps.OwnersConfig',
 'products.apps.ProductsConfig',
 'contacts.apps.ContactsConfig',
 'home.apps.HomeConfig',
 'accounts.apps.AccountsConfig',
 'crispy_forms']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback (most recent call last):
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\query.py", line 575, in update_or_create
    obj = self.select_for_update().get(**kwargs)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\query.py", line 417, in get
    self.model._meta.object_name

During handling of the above exception (Owner matching query does not exist.), another exception occurred:
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\Mayur\PycharmProjects\StartUp\social\accounts\views.py", line 91, in dashboard
    'taluka':tal, 'district':dist, 'state':state, 'pincode': pincode, 'shop':shop, }
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\query.py", line 580, in update_or_create
    obj, created = self._create_object_from_params(kwargs, params, lock=True)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\query.py", line 596, in _create_object_from_params
    obj = self.create(**params)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\query.py", line 433, in create
    obj.save(force_insert=True, using=self.db)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\base.py", line 746, in save
    force_update=force_update, update_fields=update_fields)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\base.py", line 784, in save_base
    force_update, using, update_fields,
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\base.py", line 887, in _save_table
    results = self._do_insert(cls._base_manager, using, fields, returning_fields, raw)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\base.py", line 926, in _do_insert
    using=using, raw=raw,
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\query.py", line 1204, in _insert
    return query.get_compiler(using=using).execute_sql(returning_fields)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\sql\compiler.py", line 1383, in execute_sql
    for sql, params in self.as_sql():
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\sql\compiler.py", line 1328, in as_sql
    for obj in self.query.objs
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\sql\compiler.py", line 1328, in <listcomp>
    for obj in self.query.objs
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\sql\compiler.py", line 1327, in <listcomp>
    [self.prepare_value(field, self.pre_save_val(field, obj)) for field in fields]
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\sql\compiler.py", line 1268, in prepare_value
    value = field.get_db_prep_save(value, connection=self.connection)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\fields\related.py", line 939, in get_db_prep_save
    return self.target_field.get_db_prep_save(value, connection=connection)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\fields\__init__.py", line 821, in get_db_prep_save
    return self.get_db_prep_value(value, connection=connection, prepared=False)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\models\fields\__init__.py", line 2366, in get_db_prep_value
    value = connection.ops.validate_autopk_value(value)
  File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\backends\mysql\operations.py", line 192, in validate_autopk_value
    raise ValueError('The database backend does not accept 0 as a '

Exception Type: ValueError at /accounts/dashboard
Exception Value: The database backend does not accept 0 as a value for AutoField.

я надеюсь, что получу некоторую полезную помощь, чтобы избавиться от этой проблемы.

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