我将从第二个非托管数据库（pgsql）中删除一个对象。
view.py
class DeleteDomain(DeleteView):
model = Domains
template_name = 'domain/delete_domain.html'
@method_decorator(login_required)
def dispatch(self, *args, **kwargs):
return super(DeleteDomain, self).dispatch(*args, **kwargs)
def get_object(self, *args, **kwargs):
obj = super(DeleteDomain, self).get_object(*args, **kwargs)
if obj.created_by != self.request.user:
raise Http404
return obj
def get_success_url(self):
return reverse('overview')
def get_context_data(self, **kwargs):
context = super(DeleteDomain, self).get_context_data(**kwargs)
context['nav_overview'] = True
return context
settings.py：
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
},
'pgsql': {
'ENGINE': 'django.db.backends.postgresql',
'HOST': 'localhost',
'PORT': '5432',
'PASSWORD': 'xxxxx',
'USER': 'vmailuser',
'NAME': 'virtualmail',
'OPTIONS': {
'options': '-c search_path=public'
},
}
}
models.py：
# -*- coding: utf-8 -*-
from django.db import models
from django.utils.translation import ugettext_lazy as _
from django.core.validators import RegexValidator
class Domains(models.Model):
id = models.AutoField(primary_key=True,
unique=True)
domain = (
models.CharField(max_length=255,
blank=False,
null=True,
validators=[RegexValidator(
regex=r"([a-zA-Z0-9-_]+\.)+[a-zA-Z0-9-_]
{2,}",
message=_("Invalid domain name")
)],
help_text=_('Please enter the email Domain
here')
)
)
created_by = (
models.CharField(max_length=255)
)
class Meta:
managed = False
db_table = 'domains'
def __unicode__(self):
return self.domain
urls.py： ＃ - - 编码：utf-8 - -
from django.conf.urls import url
from .views import AddDomainView, DeleteDomain
urlpatterns = [
url(r'add', AddDomainView.as_view(), name='add_domain'),
url(r'(?P<pk>\d+)/delete/$', DeleteDomain.as_view(),
name='delete_domain'),
如果我尝试访问https://localhost:8080/1/delete
我明白了：
Exception Value:
no such table: domains
在我的Consolelog中：
Internal Server Error: /domain/12/delete/
Traceback (most recent call last):
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 328, in execute
return Database.Cursor.execute(self, query, params)
sqlite3.OperationalError: no such table: domains
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner
response = get_response(request)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response
response = self._get_response(request)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/core/handlers/base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/core/handlers/base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/utils/decorators.py", line 67, in _wrapper
return bound_func(*args, **kwargs)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/contrib/auth/decorators.py", line 23, in _wrapped_view
return view_func(request, *args, **kwargs)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/utils/decorators.py", line 63, in bound_func
return func.__get__(self, type(self))(*args2, **kwargs2)
File "/home/smindorf/PycharmProjects/django/vmailpostfix/vmail/domain/views.py", line 59, in dispatch
return super(DeleteDomain, self).dispatch(*args, **kwargs)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/views/generic/base.py", line 88, in dispatch
return handler(request, *args, **kwargs)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/views/generic/detail.py", line 115, in get
self.object = self.get_object()
File "/home/smindorf/PycharmProjects/django/vmailpostfix/vmail/domain/views.py", line 62, in get_object
obj = super(DeleteDomain, self).get_object(*args, **kwargs)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/views/generic/detail.py", line 53, in get_object
obj = queryset.get()
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/models/query.py", line 374, in get
num = len(clone)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/models/query.py", line 232, in __len__
self._fetch_all()
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/models/query.py", line 1118, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/models/query.py", line 53, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 894, in execute_sql
raise original_exception
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 884, in execute_sql
cursor.execute(sql, params)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/backends/utils.py", line 80, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/smindorf/PycharmProjects/venv/django/vmailpostfix/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 328, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: domains
如何在视图中选择我的pgsql-Database？ 我不知道如何在我看来访问我的数据库。
由于
更新1：
在此视图中，我可以访问：
class AddDomainView(CreateView):
template_name = 'domain/add_domain.html'
model = Domains
form_class = CreateDomainForm
@method_decorator(login_required)
def dispatch(self, *args, **kwargs):
return super(AddDomainView, self).dispatch(*args, **kwargs)
def get_form(self, form_class=form_class):
form = super(AddDomainView, self).get_form(form_class)
form.fields['domain'].queryset = Domains.objects.using('pgsql').all()
return form
def form_valid(self, form):
self.object = form.save(commit=False)
try:
socket.gethostbyname(self.object.domain)
except socket.gaierror:
success, level, msg = False, messages.ERROR, _('Base domain does not exist.')
else:
try:
self.object.created_by = self.request.user
self.object.save(using='pgsql')
success, level, msg = True, messages.SUCCESS, _('Domain added.')
except IntegrityError:
success, level, msg = False, messages.WARNING, _('Domain already exists .')
messages.add_message(self.request, level, msg)
url = reverse('overview')
return HttpResponseRedirect(url)
更新2：
我的数据库架构：
CREATE TABLE domains (
id integer NOT NULL,
domain character varying(255) NOT NULL,
created_by character varying
);
答案 0 :(得分：0)
你可以交叉检查一次名字吗？您似乎拥有用户Domains而不是domain