django.db.utils.IntegrityError：UNIQUE約束失敗：core_profile.user_id

Question

我開始我的Django的第一webproject，-I已經創建了一個APP的 「核心」 辦理註冊和登錄

-During我希望用戶提交一些額外的信息 創建USERPROFILE

-I註冊擴展Django默認的用戶模型OneToOne關係

我剛開這個錯誤當我嘗試上傳文件

回溯：

File "C:\Python36\lib\site-packages\django\db\backends\utils.py" in execute 
    65.     return self.cursor.execute(sql, params) 

File "C:\Python36\lib\site-packages\django\db\backends\sqlite3\base.py" in 
execute 
328.   return Database.Cursor.execute(self, query, params) 

The above exception (UNIQUE constraint failed: core_profile.user_id) was the 
direct cause of the following exception: 

File "C:\Python36\lib\site-packages\django\core\handlers\exception.py" in 
inner 
    41.    response = get_response(request) 

File "C:\Python36\lib\site-packages\django\core\handlers\base.py" in 
_get_response 
    187.     response = self.process_exception_by_middleware(e, 
request) 

File "C:\Python36\lib\site-packages\django\core\handlers\base.py" in 
_get_response 
    185.     response = wrapped_callback(request, *callback_args, 
**callback_kwargs) 

File "C:\djangoprojects\mysite\mysite\core\views.py" in upload_files 
    92.     document.save() 

File "C:\Python36\lib\site-packages\django\db\models\base.py" in save 
    806.      force_update=force_update, 
update_fields=update_fields) 

File "C:\Python36\lib\site-packages\django\db\models\base.py" in save_base 
    836.    updated = self._save_table(raw, cls, force_insert, 
force_update, using, update_fields) 

File "C:\Python36\lib\site-packages\django\db\models\base.py" in _save_table 
    922.    result = self._do_insert(cls._base_manager, using, 
fields, update_pk, raw) 

File "C:\Python36\lib\site-packages\django\db\models\base.py" in _do_insert 
    961.        using=using, raw=raw) 

File "C:\Python36\lib\site-packages\django\db\models\manager.py" in 
manager_method 
    85.     return getattr(self.get_queryset(), name)(*args, 
**kwargs) 

File "C:\Python36\lib\site-packages\django\db\models\query.py" in _insert 
    1060.   return 
query.get_compiler(using=using).execute_sql(return_id) 

File "C:\Python36\lib\site-packages\django\db\models\sql\compiler.py" in 
execute_sql 
    1099.     cursor.execute(sql, params) 

File "C:\Python36\lib\site-packages\django\db\backends\utils.py" in execute 
    80.    return super(CursorDebugWrapper, self).execute(sql, 
params) 

File "C:\Python36\lib\site-packages\django\db\backends\utils.py" in execute 
    65.     return self.cursor.execute(sql, params) 

File "C:\Python36\lib\site-packages\django\db\utils.py" in __exit__ 
    94.     six.reraise(dj_exc_type, dj_exc_value, traceback) 

File "C:\Python36\lib\site-packages\django\utils\six.py" in reraise 
    685.    raise value.with_traceback(tb) 

File "C:\Python36\lib\site-packages\django\db\backends\utils.py" in execute 
    65.     return self.cursor.execute(sql, params) 

File "C:\Python36\lib\site-packages\django\db\backends\sqlite3\base.py" in 
execute 
    328.   return Database.Cursor.execute(self, query, params) 

Exception Type: IntegrityError at /core/upload_files/ 
Exception Value: UNIQUE constraint failed: core_profile.user_id 

我的一些代碼：

型號：

class Profile(models.Model): 
    user = models.OneToOneField(User, on_delete=models.CASCADE) 
    birth_date = models.DateField(null=True, blank=True) 
    birth_place = models.CharField(max_length=80, verbose_name= ("Lieu de 
    Naissance")) 
    email_confirmed = models.BooleanField(default=False) 
    adress = models.CharField(max_length=80, verbose_name=("Adresse")) 
    adress_complement = models.CharField(max_length=80, verbose_name= 
    ("Complément d'Adresse")) 
    city = models.CharField(max_length=80, verbose_name=("Ville")) 
    zip_code = models.IntegerField(null=True, blank=True) 
    drive_licence_num = models.CharField(max_length=80, verbose_name=("N° du 
    Permis de conduire")) 
    social_secu_num = models.IntegerField(null=True, blank=True) 
    phone_number = models.IntegerField(null=True, blank=True) 
    profile_completed = models.BooleanField(default=False) 
#DOCUMENTS TO UPLOAD 
    id_card = models.FileField(('Carte Nationale d\'Identité')) 
    drive_licence = models.FileField(('Permis de conduire')) 
    police_record = models.FileField(('Casier judiciaire')) 
    medical_visit = models.FileField(('Visite médicale')) 
    rib = models.FileField(('Relevé d\'Identité Bancaire (RIB)')) 
    uploaded_at = models.DateTimeField(auto_now_add=True) 
    docs_are_checked = models.BooleanField(default=False) 

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

@receiver(post_save, sender=User) 
def update_user_profile(sender, instance, created, **kwargs): 
    if created: 
     Profile.objects.create(user=instance) 
    instance.profile.save() 

形式：

class SignUpForm(UserCreationForm): 
    email = forms.EmailField(max_length=254, help_text='Required. Inform a 
          valid email address.') 
    class Meta: 
    model = User 
    fields = ('first_name', 'last_name', 'email', 'username', 'password1', 
       'password2',) 

class ProfileForm(forms.ModelForm): 
    class Meta: 
    model = Profile 
    fields = ('birth_date','birth_place', 'adress', 'adress_complement', 
       'city', 'zip_code', 'drive_licence_num', 
       'social_secu_num','phone_number') 

class DocumentForm(forms.ModelForm): 
    id_card = forms.FileField(('Carte Nationale d\'Identité'), 
    help_text='Required. Recto/Verso.') 
    class Meta: 
    model = Profile 
    fields = ('id_card', 'drive_licence', 
       'police_record', 'medical_visit', 'rib',) 

觀點：

def complete_profile(request): 
if request.user.is_authenticated(): 
    if request.method == 'POST': 
     form = ProfileForm(request.POST, instance=request.user.profile) 
     if form.is_valid(): 
      profile = form.save(commit=False) 
      profile.profile_completed = True 
      profile.save() 
      return redirect('upload_files') 
    else: 
     form = ProfileForm() 
     return render(request, 'complete_profile.html', {'form': form}) 
else: 
    return redirect('login') 

def upload_files(request): 
if request.user.is_authenticated(): 
    if request.method == 'POST': 
     form = DocumentForm(request.POST, request.FILES) 
     if form.is_valid(): 
      document = form.save(commit=False) 
      document.user = request.user 
      document.save() 
      return render(request, 'home.html') 
    else: 
     form = DocumentForm() 
     return render(request, 'upload_files.html', {'form': form}) 
else: 
    return render(request, 'login.html') 

Answer 1

我無法解釋爲什麼你會得到錯誤。但是，由於您正在信號處理程序中創建配置文件，因此我認爲您應該將該實例傳遞給表單。這意味着您不再需要在if form.is_valid()塊中設置document.user。

if request.method == 'POST': 
    form = DocumentForm(request.POST, request.FILES, instance=request.user.profile) 
    if form.is_valid(): 
     document = form.save() 
     return render(request, 'home.html') 
else: 
    form = DocumentForm(instance=request.user.profile) 

請注意，建議在成功的發佈請求後重定向用戶，以防止重複提交。

if form.is_valid(): 
    document = form.save() 
    return redirect('/')