我想用PostgreSQL在heroku中部署我的django应用，一切顺利进行makemigrations和migration运行正常，但是当我尝试创建superuser时，它给我错误
(youngmindsenv) E:\young_minds\heroku\youngminds>heroku run bash
Running bash on ? youngminds... up, run.8229 (Free)
~ $ python manage.py createsuperuser
Username (leave blank to use 'u21088'): johnson
Email address: johnson@gmail.com
Password:
Password (again):
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils
.py", line 85, in _execute
return self.cursor.execute(sql, params)
psycopg2.errors.UndefinedTable: relation "users_profile" does not exist
LINE 1: INSERT INTO "users_profile" ("user_id", "image", "descriptio...
^
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/_
_init__.py", line 371, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/_
_init__.py", line 365, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/b
ase.py", line 288, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/auth/mana
gement/commands/createsuperuser.py", line 59, in execute
return super().execute(*args, **options)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/b
ase.py", line 335, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/auth/mana
gement/commands/createsuperuser.py", line 179, in handle
self.UserModel._default_manager.db_manager(database).create_superuser(**user
_data)
File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/auth/mode
ls.py", line 161, in create_superuser
return self._create_user(username, email, password, **extra_fields)
File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/auth/mode
ls.py", line 144, in _create_user
user.save(using=self._db)
File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/auth/base
_user.py", line 73, in save
super().save(*args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py
", line 729, in save
force_update=force_update, update_fields=update_fields)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py
", line 769, in save_base
update_fields=update_fields, raw=raw, using=using,
File "/app/.heroku/python/lib/python3.6/site-packages/django/dispatch/dispatch
er.py", line 178, in send
for receiver in self._live_receivers(sender)
File "/app/.heroku/python/lib/python3.6/site-packages/django/dispatch/dispatch
er.py", line 178, in <listcomp>
for receiver in self._live_receivers(sender)
File "/app/users/signals.py", line 9, in create_profile
Profile.objects.create(user=instance) ####problem in this line
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/manager
.py", line 82, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/query.p
y", line 417, in create
obj.save(force_insert=True, using=self.db)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py
", line 729, in save
force_update=force_update, update_fields=update_fields)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py
", line 759, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, upda
te_fields)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py
", line 842, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py
", line 880, in _do_insert
using=using, raw=raw)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/manager
.py", line 82, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/query.p
y", line 1125, in _insert
return query.get_compiler(using=using).execute_sql(return_id)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/sql/com
piler.py", line 1281, in execute_sql
cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils
.py", line 100, in execute
return super().execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils
.py", line 68, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._e
xecute)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils
.py", line 77, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils
.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/utils.py", lin
e 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils
.py", line 85, in _execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "users_profile" does not exist
LINE 1: INSERT INTO "users_profile" ("user_id", "image", "descriptio...
我可以看到我的signal.py文件中有问题，但是我不知道是什么原因导致了这个问题以及如何解决
signals.py
from django.db.models.signals import post_save
from django.contrib.auth.models import User
from django.dispatch import receiver
from . models import Profile
@receiver(post_save, sender=User)
def create_profile(sender, instance, created, **kwargs):
if created:
Profile.objects.create(user=instance)
else:
pass
@receiver(post_save, sender=User)
def save_profile(sender, instance, **kwargs):
instance.profile.save()
views.py
from django.shortcuts import render,redirect
from django.contrib import messages
from .forms import UserRegistrationForm,UserUpdateForm,ProfileUpdateForm
from django.contrib.auth.decorators import login_required
from django.views.generic import ListView
from .models import Profile
from blog.views import *
from django.contrib.auth import authenticate, login
from django.http import JsonResponse
# Create your views here.
def register(request):
if request.method == "POST":
form = UserRegistrationForm(request.POST)
if form.is_valid():
form.save()
username = form.cleaned_data.get('username')
new_user = authenticate(username=form.cleaned_data['username'],
password=form.cleaned_data['password1'])
login(request, new_user)
p_form = ProfileUpdateForm(request.POST, request.FILES, instance=request.user.profile)
if form.is_valid():
if p_form.is_valid:
p_form.save()
messages.success(request,f'Account created! Welcome Young Minds family!')
return redirect('blog-home')
else:
form = UserRegistrationForm()
form_profile = ProfileUpdateForm()
response = common_info()
categories = response["categories"]
return render(request,"users/registration.html",{"form":form ,"form_profile":form_profile,"categories":categories})
def validate_username(request):
username = request.GET.get('username', None)
data = {
'is_taken': User.objects.filter(username__iexact=username).exists()
}
if data['is_taken']:
data['error_message'] = 'A user with this username "{}" already exists !'.format(username)
return JsonResponse(data)
email = request.GET.get('email', None)
if email != "":
data = {
'is_taken': User.objects.filter(email__iexact=email).exists()
}
if data['is_taken']:
data['error_message'] = '"{}" email id is already registered!'.format(email)
return JsonResponse(data)
'''@login_required
def profile(request):
user_post = Post.objects.filter(author__username=request.user)
context = {}
response = common_info()
context["user_posts"] = user_post
context['categories'] = response["categories"]
context['popular_posts'] = response["popular_post"]
return render(request,"users/profile.html",context)'''
class ProfileListView(ListView):
model = Post
template_name = 'users/profile.html'
context_object_name = 'user_posts'
ordering = ['-date_posted']
paginate_by = 5
def get_queryset(self):
return Post.objects.filter(author__username=self.kwargs.get('username'))
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
response = common_info()
context['categories'] = response["categories"]
context['popular_posts'] = response["popular_post"]
user = self.kwargs.get('username')
context["description"] = Profile.objects.get(user__username__iexact=self.kwargs.get('username'))
context['title'] = user.title() +"'s Profile"
return context
@login_required
def profile_update(request):
if request.method == 'POST':
u_form = UserUpdateForm(request.POST, instance=request.user)
p_form = ProfileUpdateForm(request.POST, request.FILES, instance=request.user.profile)
if u_form.is_valid and p_form.is_valid:
u_form.save()
p_form.save()
messages.success(request,f'Your account has been updated successfully!.')
return redirect('profile' ,request.user)
else:
u_form = UserUpdateForm(instance=request.user)
p_form = ProfileUpdateForm(instance=request.user.profile)
response = common_info()
categories = response["categories"]
context = {"u_form":u_form,"p_form":p_form,"categories":categories,"title":"Update Profile"}
return render(request,"users/profile_update.html",context)
请帮帮我！如何解决此问题，如有需要，我会更新任何其他信息。
更新
问题解决了，我要做的是解决
1）删除了我的生产表，因为我那里没有任何数据。 2）在本地运行makemigrations命令 3）直接在heroku bash中运行migration命令，而无需运行makemigrations
这样做可以解决问题！
希望这会在将来对某人有所帮助！感谢所有抽出时间对此发表评论和回答的人
答案 0 :(得分：0)
正如shafik所说，您的错误可能是由于您跑步
python manage.py makemigrations
创建迁移跟踪文件，但您没有运行
python manage.py migration
它根据上一个命令创建的迁移历史文件来创建/更改数据库。