Question

我需要帮助修复下面的内容，问题是它会保存两次，并在插入UserProfile表时找到重复值。现在已经挣扎了很长时间。

错误消息：django.db.utils.IntegrityError：重复键值违反唯一约束“user_profile_user_id_key” DETAIL：Key（user_id）=（71）已经存在。

models.py

class UserProfile(models.Model):
    user = models.OneToOneField(User, related_name='user')
    phone = models.CharField(max_length=20, blank=True, default='')

def __unicode__(self):
    return self.user.username

class Meta:
    db_table = "UserProfile"

forms.py

class ProfileForm(forms.ModelForm):
    phone = forms.CharField(required=True)

    class Meta:
        model = UserProfile
        fields = ('phone')

class MyRegistrationForm(UserCreationForm):
    first_name = forms.CharField(required=True)
    last_name = forms.CharField(required=True)

    class Meta:
        model = User
        fields = ('first_name', 'last_name', 'username', 'email', 'password1', 'password2')

views.py

def register_user(request):
    if request.user.is_authenticated():
        return HttpResponseRedirect('/user/')
    else:
        if request.method == 'POST':
            myregistrationform = MyRegistrationForm(request.POST, prefix='registration')
            userprofileform = ProfileForm(request.POST, prefix='profile')
            if myregistrationform.is_valid() and userprofileform.is_valid():

                registration = myregistrationform.save()
                profile = userprofileform.save(commit=False)
                profile.user = registration
                profile.save()

            return HttpResponseRedirect('/accounts/registration_complete')
    else:
        myregistrationform = MyRegistrationForm()
        userprofileform = ProfileForm()
return render(request, 
    'register.html', 
    {'myregistrationform': myregistrationform, 'userprofileform': userprofileform})

堆栈追踪：

[08/Sep/2016 07:36:09] "GET /register_user/ HTTP/1.1" 200 1521
[08/Sep/2016 07:36:28] "POST /register_user/register/ HTTP/1.1" 200 2247
Internal Server Error: /register_user/register/register/
Traceback (most recent call last):
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
psycopg2.IntegrityError: duplicate key value violates unique constraint "user_profile_user_id_key"
DETAIL:  Key (user_id)=(71) already exists.


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/core/handlers/exception.py", line 39, in inner
    response = get_response(request)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/core/handlers/base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/core/handlers/base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/Documents/virtual_environment/archive_project/portal_app/views.py", line 240, in register_user
    profile.save()
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/models/base.py", line 796, in save
    force_update=force_update, update_fields=update_fields)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/models/base.py", line 824, in save_base
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/models/base.py", line 908, in _save_table
    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/models/base.py", line 947, in _do_insert
    using=using, raw=raw)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/models/manager.py", line 85, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/models/query.py", line 1043, in _insert
    return query.get_compiler(using=using).execute_sql(return_id)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/models/sql/compiler.py", line 1054, in execute_sql
    cursor.execute(sql, params)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/backends/utils.py", line 79, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/home/Documents/virtual_environment/lib/python3.4/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
django.db.utils.IntegrityError: duplicate key value violates unique constraint "user_profile_user_id_key"
DETAIL:  Key (user_id)=(71) already exists.

重复键值违反唯一约束“user_profile_user_id_key”Django

0 个答案: