我创建了一个基于类的视图，它继承CreateView了它根据 url 参数动态生成一个表单。我有其他视图也具有相同的功能，但它们确实重定向到ListView但这个 CBV 给出了 404 错误请求 url：http://127.0.0.1:8000/create/StudentPerformance/tblstandard/（StudentPerformance 是 app_label，tblstandard 是 model_label）这是 CreateView 下面的 url。我得到一个Attribute Error: Generic detail view ModelObjectCreateView must be called with either an object pk or a slug in the URLconf.
创建视图
仅显示创建视图，但工作的 ModelObjectUpadteView、ModelObjectDeleteView 具有相同的结构并且它们工作。
class ModelObjectCreateView(SuccessMessageMixin, PermissionRequiredMixin, LoginRequiredMixin, CreateView):
context_object_name = 'object'
app_label = ""
model_label = ""
fields_label = ""
template_label = ""
success_label = ""
success_message = f"%(object)s successfully created!!!"
def dispatch(self, request, *args, **kwargs):
self.app_label = kwargs.get('app_label', None)
self.model_label = kwargs.get('model_label', None)
self.model = apps.get_model(self.app_label, self.model_label.capitalize())
self.get_modelobject_fields_label()
self.template_label = kwargs.get('template_label', None)
self.template_name = self.get_template_name_label()
# ----------------------------------
# success_url is assigned
# ----------------------------------
self.success_url = self.get_success_url_label()
self.permission_required = self.get_permissions_required_label()
try:
ret = super(ModelObjectCreateView, self).dispatch(request, *args, **kwargs)
except AttributeError as e:
print(e)
raise Http404
return ret
def form_valid(self, form):
form.instance.created_by = self.request.user
return super().form_valid(form)
def get_template_name_label(self):
if self.template_label == '0':
template_name = f'{self.app_label}/{self.model_label}_create.html'
elif self.template_label:
path = self.template_label.split("-")
file = ""
for folder in path:
file += folder + "/"
template_name = f'{file[:-1]}.html'
else:
template_name = 'modelobject_create.html'
return template_name
def get_modelobject_fields_label(self, form1=None):
if not form1 is None:
self.form_class = form1
else:
model_label = list()
field_label = list()
for app in apps.get_app_configs():
for model in app.get_models():
model_label.append(model._meta.verbose_name.replace(" ", ""))
field_labels = self.model._meta.get_fields()
for field in field_labels:
if field.name == f'{self.model.objects.model._meta.db_table}_id':
pass
elif field.name in model_label:
pass
elif not field.editable:
pass
else:
field_label.append(field.name)
self.fields = field_label
return 0
# -------------------------------------------------------------
# This creates the success url that is assigned to self.success_url in dispatch() method.
# -------------------------------------------------------------
def get_success_url_label(self):
if self.success_label == "0":
success_url = 'modelobject_success_url.html'
elif self.success_label == "1":
success_url = f'{self.app_label}/{self.model_label}_success_url.html'
elif self.success_label:
success_url = self.success_label
else:
success_url = reverse('MySchoolHome:modelobject_list_view',
kwargs={'app_label': self.app_label, 'model_label': self.model_label})
return success_url
def get_success_message(self, cleaned_data):
return self.success_message % dict(
cleaned_data,
object=self.get_object(),
)
def get_permissions_required_label(self, permission=None, permission_type=None):
if permission is not None:
permission_required_label = permission
else:
if permission_type is None:
permission_required_label = f'{self.app_label}.add_{self.model_label}'
else:
return HttpResponse(status=403)
return permission_required_label
Urls.py（摘录）
app_name = 'MySchoolHome'
urlpatterns += [
path('list/<str:app_label>/<str:model_label>/',
views.MshModelListView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_list_view'),
path('list/<str:app_label>/<str:model_label>/<str:template_label>/',
views.MshModelListView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_list_view'),
path('create/<str:app_label>/<str:model_label>/',
generic.ModelObjectCreateView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_create_view'),
path('create/<str:app_label>/<str:model_label>/<int:pk>/',
generic.ModelObjectCreateView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_create_view'),
path('create/<str:app_label>/<str:model_label>/<str:template_label>/',
generic.ModelObjectCreateView.as_view(), name='modelobject_create_view'),
我已经看到其他关于该错误的 SO 帖子，但我也尝试过它们，但它们没有帮助。我也想给出一个固定的 url 来查看 success_url 是否有效，但它并不有效。
编辑：同时显示 generic.py（我的扩展通用视图）文件和 urls.py 以供进一步参考： generic.py
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin, PermissionRequiredMixin
from django.contrib.messages.views import SuccessMessageMixin
from django.http import Http404, HttpResponse
from django.apps import apps
from django.template.exceptions import TemplateDoesNotExist
from django.urls import reverse_lazy, reverse
from django.views.generic import ListView, CreateView, DetailView, UpdateView, DeleteView
from django.contrib.auth import views as auth_views
class ModelObjectListView(PermissionRequiredMixin, LoginRequiredMixin, ListView):
context_object_name = 'object'
app_label = ""
model_label = ""
template_label = ""
paginate_by = 25
def dispatch(self, request, *args, **kwargs):
self.app_label = kwargs.get('app_label', None)
self.model_label = kwargs.get('model_label', None)
self.model = apps.get_model(self.app_label, self.model_label.capitalize())
self.template_label = kwargs.get('template_label', None)
self.template_name = self.get_template_name_label()
self.permission_required = self.get_permissions_required_label()
try:
ret = super(ModelObjectListView, self).dispatch(request, *args, **kwargs)
except AttributeError:
raise Http404
return ret
def get_queryset(self):
filters = {}
for key, value in self.request.GET.items():
if key != "page":
if value != '':
filters[f'{key}__icontains'] = value
filter_list = self.model.objects.filter(**filters)
return filter_list
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['fields'] = [
field for field in self.get_modelobject_fields_label()
]
context['display_fields'] = [
field.replace('_', ' ').title() for field in self.get_modelobject_fields_label()
]
return context
def get_modelobject_fields_label(self, form1=None):
model_label = list()
field_label = list()
display_field_label = list()
for app in apps.get_app_configs():
for model in app.get_models():
model_label.append(model._meta.verbose_name.replace(" ", ""))
field_labels = self.model._meta.get_fields()
for field in field_labels:
if field.name == f'{self.model.objects.model._meta.db_table}_id':
pass
elif field.name in model_label:
pass
# elif not field.editable:
# pass
else:
field_label.append(field.name)
return field_label
def get_template_name_label(self):
if self.template_label == '0':
template_name = f'{self.app_label}/{self.model_label}_create.html'
elif self.template_label:
path = self.template_label.split("-")
file = ""
for folder in path:
file += folder + "/"
template_name = f'{file[:-1]}.html'
else:
template_name = 'modelobject_list.html'
return template_name
def get_permissions_required_label(self, permission=None, permission_type=None):
if permission is not None:
permission_required_label = permission
else:
if permission_type is None:
permission_required_label = f'{self.app_label}.view_{self.model_label.lower()}'
else:
return HttpResponse(status=403)
return permission_required_label
class ModelObjectCreateView(SuccessMessageMixin, PermissionRequiredMixin, LoginRequiredMixin, CreateView):
context_object_name = 'object'
app_label = ""
model_label = ""
fields_label = ""
template_label = ""
success_label = ""
success_message = f"%(object)s successfully created!!!"
def dispatch(self, request, *args, **kwargs):
self.app_label = kwargs.get('app_label', None)
self.model_label = kwargs.get('model_label', None)
self.model = apps.get_model(self.app_label, self.model_label.capitalize())
self.get_modelobject_fields_label()
self.template_label = kwargs.get('template_label', None)
self.template_name = self.get_template_name_label()
self.success_url = self.get_success_url_label()
self.permission_required = self.get_permissions_required_label()
try:
ret = super(ModelObjectCreateView, self).dispatch(request, *args, **kwargs)
except AttributeError as e:
print(e)
raise Http404
return ret
def form_valid(self, form):
form.instance.created_by = self.request.user
return super().form_valid(form)
def get_template_name_label(self):
if self.template_label == '0':
template_name = f'{self.app_label}/{self.model_label}_create.html'
elif self.template_label:
path = self.template_label.split("-")
file = ""
for folder in path:
file += folder + "/"
template_name = f'{file[:-1]}.html'
else:
template_name = 'modelobject_create.html'
return template_name
def get_modelobject_fields_label(self, form1=None):
if not form1 is None:
self.form_class = form1
else:
model_label = list()
field_label = list()
for app in apps.get_app_configs():
for model in app.get_models():
model_label.append(model._meta.verbose_name.replace(" ", ""))
field_labels = self.model._meta.get_fields()
for field in field_labels:
if field.name == f'{self.model.objects.model._meta.db_table}_id':
pass
elif field.name in model_label:
pass
elif not field.editable:
pass
else:
field_label.append(field.name)
self.fields = field_label
return 0
def get_success_url_label(self):
if self.success_label == "0":
success_url_label = 'modelobject_success_url.html'
elif self.success_label == "1":
success_url_label = f'{self.app_label}/{self.model_label}_success_url.html'
elif self.success_label:
success_url_label = self.success_label
else:
success_url_label = reverse('MySchoolHome:modelobject_list_view',
kwargs={'app_label': self.app_label, 'model_label': self.model_label})
return success_url_label
def get_success_message(self, cleaned_data):
return self.success_message % dict(
cleaned_data,
object=self.get_object(),
)
def get_permissions_required_label(self, permission=None, permission_type=None):
if permission is not None:
permission_required_label = permission
else:
if permission_type is None:
permission_required_label = f'{self.app_label}.add_{self.model_label}'
else:
return HttpResponse(status=403)
return permission_required_label
class ModelObjectUpdateView(SuccessMessageMixin, PermissionRequiredMixin, LoginRequiredMixin, UpdateView):
context_object_name = 'object'
app_label = ""
model_label = ""
fields_label = ""
template_label = ""
success_label = ""
success_message = f"%(object)s successfully updated!!!"
def dispatch(self, request, *args, **kwargs):
self.app_label = kwargs.get('app_label', None)
self.model_label = kwargs.get('model_label', None)
self.model = apps.get_model(self.app_label, self.model_label.capitalize())
self.get_modelobject_fields_label()
self.template_label = kwargs.get('template_label', None)
self.template_name = self.get_template_name_label()
self.success_url = self.get_success_url_label()
self.permission_required = self.get_permissions_required_label()
print(self.get_permissions_required_label())
try:
ret = super(ModelObjectUpdateView, self).dispatch(request, *args, **kwargs)
except AttributeError:
raise Http404
return ret
def form_valid(self, form):
form.instance.created_by = self.request.user
return super().form_valid(form)
def get_template_name_label(self):
if self.template_label == '0':
template_name = f'{self.app_label}/{self.model_label}_create.html'
elif self.template_label:
path = self.template_label.split("-")
file = ""
for folder in path:
file += folder + "/"
template_name = f'{file[:-1]}.html'
else:
template_name = 'modelobject_create.html'
return template_name
def get_modelobject_fields_label(self, form1=None):
if not form1 is None:
self.form_class = form1
else:
model_label = list()
field_label = list()
for app in apps.get_app_configs():
for model in app.get_models():
model_label.append(model._meta.verbose_name.replace(" ", ""))
field_labels = self.model._meta.get_fields()
for field in field_labels:
if field.name == f'{self.model.objects.model._meta.db_table}_id':
pass
elif field.name in model_label:
pass
elif not field.editable:
pass
else:
field_label.append(field.name)
self.fields = field_label
return 0
def get_success_url_label(self):
if self.success_label == "0":
success_url = 'modelobject_success_url.html'
elif self.success_label == "1":
success_url = f'{self.app_label}/{self.model_label}_success_url.html'
elif self.success_label:
success_url = self.success_label
else:
success_url = reverse('MySchoolHome:modelobject_list_view',
kwargs={'app_label': self.app_label, 'model_label': self.model_label})
return success_url
def get_success_message(self, cleaned_data):
return self.success_message % dict(
cleaned_data,
object=self.get_object(),
)
def get_permissions_required_label(self, permission=None, permission_type=None):
if permission is not None:
permission_required_label = permission
else:
if permission_type is None:
permission_required_label = f'{self.app_label}.change_{self.model_label.lower()}'
else:
return HttpResponse(status=403)
return permission_required_label
class ModelObjectDeleteView(PermissionRequiredMixin, LoginRequiredMixin, DeleteView):
context_object_name = f'object'
app_label = ""
model_label = ""
template_label = ""
success_label = ""
def dispatch(self, request, *args, **kwargs):
self.model_label = kwargs.get('model_label', None)
self.app_label = kwargs.get('app_label', None)
self.model = apps.get_model(self.app_label, self.model_label.capitalize())
self.template_label = kwargs.get('template_label', None)
self.template_name = self.get_template_name_label()
self.success_label = kwargs.get('success_label', None)
self.success_url = self.get_success_url_label()
self.permission_required = self.get_permissions_required_label()
try:
ret = super(ModelObjectDeleteView, self).dispatch(request, *args, **kwargs)
except AttributeError:
raise Http404
except TemplateDoesNotExist:
return HttpResponse(status=501)
return ret
def get_template_name_label(self):
if self.template_label == "0":
template_name = f'{self.app_label}/{self.model_label}_delete.html'
elif self.template_label:
path = self.template_label.split("-")
file = ""
for folder in path:
file += folder + "/"
template_name = f'{file[:-1]}.html'
else:
template_name = 'modelobject_confirm_delete.html'
return template_name
def get_success_url_label(self):
if self.success_label == "0":
success_url = f'{self.app_label}/{self.model_label}_success_url.html'
elif self.success_label:
success_url = reverse('MySchoolHome:modelobject_list_view',
kwargs={'app_label': self.app_label, 'model_label': self.model_label,
'template_label': self.success_label})
else:
success_url = reverse('MySchoolHome:modelobject_list_view',
kwargs={'app_label': self.app_label, 'model_label': self.model_label})
return success_url
def get_permissions_required_label(self, permission=None, permission_type=None):
if permission is not None:
permission_required_label = permission
else:
if permission_type is None:
permission_required_label = f'{self.app_label}.delete_{self.model_label}'
else:
return HttpResponse(status=403)
return permission_required_label
def delete(self, request, *args, **kwargs):
obj = self.get_object()
messages.success(self.request, f"{obj} successfully deleted!!!")
return super(ModelObjectDeleteView, self).delete(request, *args, **kwargs)
网址.py
from django.urls import path
from django.contrib.auth import views as auth_views
from django.http import request
from . import views
from aagam_packages.django.view_extensions import generic
app_name = 'MySchoolHome'
urlpatterns = [
path('sitemap/', views.sitemap, name='sitemap'),
]
urlpatterns += [
path('login/', auth_views.LoginView.as_view(extra_context={'page_context': page_context, 'titleTag': 'Login'}),
name='login'),
path('logout/', auth_views.LogoutView.as_view(extra_context={'page_context': page_context, 'titleTag': 'Logout'}),
name='logout'),
path('change-password/', auth_views.PasswordChangeView.as_view(), name="change_password"),
path('settings/', auth_views.LogoutView.as_view(extra_context={'page_context': page_context, 'titleTag': 'Logout'}),
name='settings'),
path('documentation/',
auth_views.LogoutView.as_view(extra_context={'page_context': page_context, 'titleTag': 'Logout'}),
name='documentation'),
]
urlpatterns += [
path('list/<str:app_label>/<str:model_label>/',
generic.ModelObjectListView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_list_view'),
path('list/<str:app_label>/<str:model_label>/<str:template_label>/',
generic.ModelObjectListView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_list_view'),
path('create/<str:app_label>/<str:model_label>/',
generic.ModelObjectCreateView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_create_view'),
path('create/<str:app_label>/<str:model_label>/<str:template_label>/',
generic.ModelObjectCreateView.as_view(), name='modelobject_create_view'),
path('update/<str:app_label>/<str:model_label>/<int:pk>/',
views.MshModelUpdateView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_update_view'),
path('update/<str:app_label>/<str:model_label>/<int:pk>/<str:template_label>/',
views.MshModelUpdateView.as_view(extra_context={'page_context': {'titleTag': '1'}}),
name='modelobject_update_view'),
path('delete/<str:app_label>/<str:model_label>/<int:pk>/',
generic.ModelObjectDeleteView.as_view(), name='modelobject_delete_view'),
path('delete/<str:app_label>/<str:model_label>/<int:pk>/<str:template_label>/',
generic.ModelObjectDeleteView.as_view(), name='modelobject_delete_view'),
path('delete/<str:app_label>/<str:model_label>/<int:pk>/<str:template_label>/<str:success_label>/',
generic.ModelObjectDeleteView.as_view(), name='modelobject_delete_view'),
]
urlpatterns += [
path('', views.home, name='home'),
path('student/', views.student_dashboard, name='student_dashboard'),
path('educator/', views.educator_dashboard, name='educator_dashboard'),
path('principal/', views.principal_dashboard, name='principal_dashboard'),
path('staff/', views.staff_dashboard, name='staff_dashboard'),
]