Django IntegrityError 错误

Question

如果我尝试通过 CBV CreateView 输入数据但通过管理面板一切正常，则会出现 IntegrityError。

型号：

class Account(Info):
    firm = models.ForeignKey(
        Firm
    )
    name = models.CharField(
        max_length=100
    )
    is_default = models.BooleanField(
        default=False
    )
    type = models.CharField(
        max_length=1, choices=ACCOUNT_TYPE_CHOICES
    )
    category = models.CharField(
        max_length=1, choices=ACCOUNT_CATEGORIES
    )
    sub_category = models.CharField(
        max_length=1, choices=ACCOUNT_SUB_CATEGORIES
    )
    show_in = models.CharField(
        max_length=1, choices=SHOW_IN
    )

    class Meta:
        ordering = [
            'name'
        ]
        unique_together = (
            'firm', 'name'
        )

查看：

class CreateAccountView(LoginRequiredMixin, CreateView):
    success_url = '/'
    form_class = CreateAccountForm
    http_method_names = ['get', 'post']
    template_name = 'create_templates/create_account.html'

    def get_context_data(self, **kwargs):
        context = super(CreateAccountView, self).get_context_data(**kwargs)
        firm_obj = self.get_firm_obj(self.kwargs.get('f_id'))
        context['firm_obj'] = firm_obj
        return context

    def form_valid(self, form):
        form.instance.firm = self.get_firm_obj(self.kwargs.get('f_id'))
        form.instance.is_default = False
        form.instance.sub_category = '4'
        super(CreateAccountView, self).form_valid(form)
        return HttpResponse(
            '''
            <script>
                window.close();
                window.onunload = refreshParent; function refreshParent() {
                window.opener.location.reload();
                }
            </script>
            '''
        )

    @staticmethod
    def get_firm_obj(f_id):
        return get_object_or_404(Firm, id=f_id)

表格：

class CreateAccountForm(forms.ModelForm):
    name = forms.CharField(
        label='Account Name', max_length=100,
        widget=forms.TextInput(
            attrs={
                'class': 'form-control'
            }
        )
    )

    class Meta:
        model = Account
        fields = (
            'name', 'type',
            'category', 'show_in'
        )
        widgets = {
            'type': forms.Select(
                attrs={
                    'class': 'form-control'
                }
            ),
            'category': forms.Select(
                attrs={
                    'class': 'form-control'
                }
            ),
            'show_in': forms.Select(
                attrs={
                    'class': 'form-control'
                }
            )
        }

回溯：

File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\core\handlers\base.py" in get_response
  111.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\views\generic\base.py" in view
  69.             return self.dispatch(request, *args, **kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\utils\decorators.py" in _wrapper
  29.             return bound_func(*args, **kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\contrib\auth\decorators.py" in _wrapped_view
  22.                 return view_func(request, *args, **kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\utils\decorators.py" in bound_func
  25.                 return func.__get__(self, type(self))(*args2, **kwargs2)
File "C:\Users\PrImE\workspace\kaizentech\emuneem\emuneem\girvi\utils.py" in dispatch
  17.         return super(LoginRequiredMixin, self).dispatch(*args, **kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\views\generic\base.py" in dispatch
  87.         return handler(request, *args, **kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\views\generic\edit.py" in post
  207.         return super(BaseCreateView, self).post(request, *args, **kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\views\generic\edit.py" in post
  173.             return self.form_valid(form)
File "C:\Users\PrImE\workspace\kaizentech\emuneem\emuneem\muneem\views\create_views\create_account_view.py" in form_valid
  25.         super(CreateAccountView, self).form_valid(form)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\views\generic\edit.py" in form_valid
  149.         self.object = form.save()
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\forms\models.py" in save
  457.                              construct=False)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\forms\models.py" in save_instance
  103.         instance.save()
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\models\base.py" in save
  590.                        force_update=force_update, update_fields=update_fields)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\models\base.py" in save_base
  618.             updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\models\base.py" in _save_table
  699.             result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\models\base.py" in _do_insert
  732.                                using=using, raw=raw)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\models\manager.py" in manager_method
  92.                 return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\models\query.py" in _insert
  921.         return query.get_compiler(using=using).execute_sql(return_id)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\models\sql\compiler.py" in execute_sql
  920.                 cursor.execute(sql, params)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\backends\utils.py" in execute
  81.             return super(CursorDebugWrapper, self).execute(sql, params)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\backends\utils.py" in execute
  65.                 return self.cursor.execute(sql, params)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\utils.py" in __exit__
  94.                 six.reraise(dj_exc_type, dj_exc_value, traceback)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\backends\utils.py" in execute
  65.                 return self.cursor.execute(sql, params)
File "C:\Users\PrImE\envs\kaizentech\lib\site-packages\django\db\backends\sqlite3\base.py" in execute
  485.         return Database.Cursor.execute(self, query, params)

Exception Type: IntegrityError at /add_account/f/1/
Exception Value: columns firm_id, name are not unique

使用 sqlite 进行开发。如果我尝试通过管理面板输入重复条目，我通过管理面板一切正常，我得到 Account with this Firm and Name already exists. 这是正确的，但为什么我没有通过 CBV

看到此错误

Answer 1

此定义意味着 "Account with this Firm and Name already exists." 您在两种情况下都收到相同的错误，

unique_together = (
    'firm', 'name'
)

异常值：列firm_id，名称不唯一，这意味着与管理面板错误相同。

Answer 2

您已经从表单中排除了 firm，并且在验证之后才添加它，因此表单无法验证公司和名称的组合是否唯一。您需要以其他方式将其传递给表单，并在表单的 clean 方法中明确检查不存在具有该组合的现有实例。

Django IntegrityError 错误

Django IntegrityError error

django

django-models

django-views

django-class-based-views