新手来了
尝试使用 Django 和 Postgres db 构建应用程序。我目前正在努力迁移，收到此错误“KeyError: ('profiles', 'talk')”
这是我尝试迁移后命令行中的错误:
(myvenv) Abbys-iMac:talks abbyhumphreys$ python manage.py migrate
/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/contrib/sites/models.py:78: RemovedInDjango19Warning: Model class django.contrib.sites.models.Site doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
class Site(models.Model):
System check identified some issues:
WARNINGS:
profiles.Profile.user: (fields.W342) Setting unique=True on a ForeignKey has the same effect as using a OneToOneField.
HINT: ForeignKey(unique=True) is usually better served by a OneToOneField.
registration.RegistrationProfile.user: (fields.W342) Setting unique=True on a ForeignKey has the same effect as using a OneToOneField.
HINT: ForeignKey(unique=True) is usually better served by a OneToOneField.
Operations to perform:
Synchronize unmigrated apps: staticfiles, registration, humanize, messages
Apply all migrations: profiles, auth, sessions, admin, contenttypes
Synchronizing apps without migrations:
Creating tables...
Running deferred SQL...
Installing custom SQL...
Running migrations:
Rendering model states...Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
utility.execute()
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/core/management/__init__.py", line 330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/core/management/base.py", line 390, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/core/management/base.py", line 441, in execute
output = self.handle(*args, **options)
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 221, in handle
executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/db/migrations/executor.py", line 104, in migrate
state = migration.mutate_state(state, preserve=do_run)
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/db/migrations/migration.py", line 83, in mutate_state
operation.state_forwards(self.app_label, new_state)
File "/Users/abbyhumphreys/talks/myvenv/lib/python3.4/site-packages/django/db/migrations/operations/fields.py", line 256, in state_forwards
for n, f in state.models[app_label, self.model_name_lower].fields
KeyError: ('profiles', 'talk')
这是我的models.py:
from django.contrib.auth.models import User
from django.db import models
class Profile(models.Model):
name = models.CharField(max_length=255)
sname = models.CharField(max_length=255, blank=True, null=True)
phone = models.CharField(max_length=255, blank=True, null=True)
mobile = models.CharField(max_length=255, blank=True, null=True)
email = models.EmailField(max_length=254, blank=True, null=True)
address = models.TextField(blank=True, null=True)
notes = models.TextField()
slug = models.SlugField(unique=True)
user = models.ForeignKey(User, unique=True, blank=True, null=True, related_name="users")
class Talk(models.Model):
talk_no = models.CharField(max_length=255, blank=True, null=True)
talk_name = models.CharField(max_length=255, blank=True, null=True)
slug = models.SlugField(unique=True)
class Congregation(models.Model):
cong_name = models.CharField(max_length=255, blank=True, null=True)
meeting_time = models.CharField(max_length=255, blank=True, null=True)
cong_address = models.TextField(blank=True, null=True)
cong_phone = models.CharField(max_length=255, blank=True, null=True)
slug = models.SlugField(unique=True)
这是我的views.py:
from django.contrib.auth.decorators import login_required
from django.http import Http404
from django.shortcuts import render, render_to_response, redirect
from django.template import RequestContext
from profiles.forms import ProfileForm, TalkForm, CongForm
from profiles.models import Profile, Talk, Congregation
from django.template.defaultfilters import slugify
def index(request):
ids = Profile.objects.all()
return render(request, 'index.html',{'ids': ids,})
def about(request):
return render(request, 'about.html',)
def contact(request):
return render(request, 'contact.html',)
def profile_detail(request, slug):
#grab the object...
profile=Profile.objects.get(slug=slug)
#and pass to the template
return render(request,'ids/profile_detail.html', {
'profile': profile,
})
@login_required
def edit_profile(request, slug):
profile = Profile.objects.get(slug=slug)
if profile.user != request.user:
raise Http404
form_class = ProfileForm
if request.method == 'POST':
form = form_class(data=request.POST, instance=profile)
if form.is_valid():
form.save()
return redirect('profile_detail', slug=profile.slug)
else:
form = form_class(instance=profile)
return render(request, 'ids/edit_profile.html', {'profile': profile, 'form': form, })
def create_profile(request):
form_class = ProfileForm
if request.method == 'POST':
form=form_class(request.POST)
if form.is_valid():
profile=form.save(commit=False)
profile.user = request.user
profile.slug = slugify(profile.name)
profile.save()
slug = slugify(name)
return redirect('profile_detail', slug=profile.slug)
else:
form=form_class()
return render(request, 'ids/create_profile.html', {'form': form,})
def browse_by_name(request, initial=None):
if initial:
ids = Profile.objects.filter(name__istartswith=initial).order_by('name')
else:
ids = Profile.objects.all().order_by('name')
return render_to_response('search/search.html', {'ids': ids, 'initial': initial,}, context_instance=RequestContext(request))
def talk_detail(request, slug):
#grab the object...
talk=Talk.objects.get(slug=slug)
#and pass to the template
return render(request,'ids/talk_detail.html', {
'talk': talk,
})
@login_required
def edit_talk(request, slug):
talk = Talk.objects.get(slug=slug)
if profile.user != request.user:
raise Http404
form_class = TalkForm
if request.method == 'POST':
form = form_class(data=request.POST, instance=talk)
if form.is_valid():
form.save()
return redirect('talk_detail', slug=slug.slug)
else:
form = form_class(instance=talk)
return render(request, 'ids/edit_talk.html', {'talk': talk, 'form': form, })
def create_talk(request):
form_class = TalkForm
if request.method == 'POST':
form=form_class(request.POST)
if form.is_valid():
talk=form.save(commit=False)
profile.user = request.user
talk.slug = slugify(talk.talk_no)
talk.save()
slug = slugify(talk_no)
return redirect('talk_detail', slug=talk.slug)
else:
form=form_class()
return render(request, 'ids/create_talk.html', {'form': form,})
def cong_detail(request, slug):
#grab the object...
cong=Congregation.objects.get(slug=slug)
#and pass to the template
return render(request,'ids/cong_detail.html', {
'cong': cong,
})
@login_required
def edit_cong(request, slug):
cong = Congregation.objects.get(slug=slug)
if profile.user != request.user:
raise Http404
form_class = CongForm
if request.method == 'POST':
form = form_class(data=request.POST, instance=cong)
if form.is_valid():
form.save()
return redirect('cong_detail', slug=cong.slug)
else:
form = form_class(instance=cong)
return render(request, 'ids/edit_cong.html', {'cong': cong, 'form': form, })
def create_cong(request):
form_class = CongForm
if request.method == 'POST':
form=form_class(request.POST)
if form.is_valid():
cong=form.save(commit=False)
profile.user = request.user
cong.slug = slugify(cong.cong_name)
cong.save()
slug = slugify(cong_name)
return redirect('cong_detail', slug=cong.slug)
else:
form=form_class()
return render(request, 'ids/create_cong.html', {'form': form,})
这是我的 url.py
from django.contrib import admin
from profiles.backends import MyRegistrationView
from django.conf.urls import patterns, include, url
from django.contrib import admin
from django.views.generic import TemplateView, RedirectView
from django.contrib.auth.views import password_reset, password_reset_done, password_reset_confirm, password_reset_complete
urlpatterns = patterns('',
url(r'^$', 'profiles.views.index', name='home'),
url(r'^about/$', TemplateView.as_view(template_name='about.html'), name='about'),
url(r'^contact/$', TemplateView.as_view(template_name='contact.html'), name='contact'),
url(r'^ids/$', RedirectView.as_view(pattern_name='browse')),
url(r'^ids/(?P<slug>[-\w]+)/$', 'profiles.views.profile_detail', name='profile_detail'),
url(r'^ids/(?P<slug>[-\w]+)/edit/$', 'profiles.views.edit_profile', name='edit_profile'),
url(r'^ids/(?P<slug>[-\w]+)/$', 'profiles.views.talk_detail', name='talk_detail'),
url(r'^ids/(?P<slug>[-\w]+)/edit/$', 'profiles.views.edit_talk', name='edit_talk'),
url(r'^ids/(?P<slug>[-\w]+)/$', 'profiles.views.cong_detail', name='cong_detail'),
url(r'^ids/(?P<slug>[-\w]+)/edit/$', 'profiles.views.edit_cong', name='edit_cong'),
url(r'^browse/$', RedirectView.as_view(pattern_name='browse')),
url(r'^browse/name/$','profiles.views.browse_by_name', name='browse'),
url(r'^browse/name/(?P<initial>[-\w]+)/$', 'profiles.views.browse_by_name', name='browse_by_name'),
url(r'^accounts/password/reset/$', password_reset,
{'template_name': 'registration/password_reset_form.html'},
name="password_reset"),
url(r'^accounts/password/reset/done/$',
password_reset_done,
{'template_name': 'registration/password_reset_done.html'},
name="password_reset_done"),
url(r'^accounts/password/reset/(?P<uidb64>[0-9A-Za-z_\-]+)/(?P<token>[0-9A-Za-z]{1,13}-[0-9A-Za-z]{1,20})/$',
password_reset_confirm,
{'template_name': 'registration/password_reset_confirm.html'},
name="password_reset_confirm"),
url(r'^accounts/password/done/$', password_reset_complete,
{'template_name': 'registration/password_reset_complete.html'},
name="password_reset_complete"),
url(r'^accounts/register/$', MyRegistrationView.as_view(), name='registration_register'),
url(r'^accounts/create_profile/$', 'profiles.views.create_profile', name='registration_create_profile'),
url(r'^accounts/create_talk/$', 'profiles.views.create_talk', name='registration_create_talk'),
url(r'^accounts/create_cong/$', 'profiles.views.create_cong', name='registration_create_cong'),
url(r'^accounts/', include('registration.backends.default.urls')),
url(r'^admin/', include(admin.site.urls)),
)
不确定我是否提供了太多或太少的信息，但作为一个新手，我不知道错误意味着什么或者你可能需要什么信息来弄清楚!
预先感谢您帮助解决这个问题以及您耐心地查看我所有糟糕的代码! :-s
最佳答案
当您执行以下步骤时会发生这种情况:
migrate appname
并且由于错误而停止执行。
已经创建。
部分创建表，然后再次运行迁移。
我的解决方法是，我没有删除 CreateModel，而是移动了
它到以前的迁移文件。
关于django - KeyError : ('profiles' , 'talk' ) - 我该如何解决？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30242243/