django.db.utils.OperationalError：沒有這樣的表：bookmarks_mytag

Question

我正在django.db.utils.OperationalError: no such table: bookmarks_mytag試圖安裝django項目。 該倉庫位於http://bitbucket.org/codyc54321/bookwormbud.git

我們做了

touch db.sqlite3
python manage.py migrate

它炸了：

(bookwormbuddy) john@john-Precision-3510:~/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca$ python manage.py runserver
Performing system checks...

Unhandled exception in thread started by <function wrapper at 0x7f7adbb5e140>
Traceback (most recent call last):
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/utils/autoreload.py", line 227, in wrapper
    fn(*args, **kwargs)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 125, in inner_run
    self.check(display_num_errors=True)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/base.py", line 359, in check
    include_deployment_checks=include_deployment_checks,
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/base.py", line 346, in _run_checks
    return checks.run_checks(**kwargs)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/checks/registry.py", line 81, in run_checks
    new_errors = check(app_configs=app_configs)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/checks/urls.py", line 16, in check_url_config
    return check_resolver(resolver)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/checks/urls.py", line 26, in check_resolver
    return check_method()
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/urls/resolvers.py", line 254, in check
    for pattern in self.url_patterns:
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/urls/resolvers.py", line 405, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/urls/resolvers.py", line 398, in urlconf_module
    return import_module(self.urlconf_name)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookwormbud/urls.py", line 24, in <module>
    url(r'^',           include('bookmarks.urls',   namespace='bookmarks')),
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/conf/urls/__init__.py", line 50, in include
    urlconf_module = import_module(urlconf_module)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/urls.py", line 4, in <module>
    from bookmarks import views
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/views.py", line 24, in <module>
    from bookmarks.forms        import ArticleForm, TagForm, TagSelectForm, EditArticleForm, AddedDateCalendarForm, LastViewedDateCalendarForm
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/forms.py", line 120, in <module>
    class TagSelectForm(forms.ModelForm):
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/forms.py", line 127, in TagSelectForm
    choices=get_tag_choices()
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/forms.py", line 112, in get_tag_choices
    if tags:
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 258, in __nonzero__
    return type(self).__bool__(self)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 254, in __bool__
    self._fetch_all()
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 1118, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 53, in __iter__
    results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 886, in execute_sql
    raise original_exception
django.db.utils.OperationalError: no such table: bookmarks_mytag
^C(bookwormbuddy) john@john-Precision-3510:~/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca$ touch db.sqlite3
(bookwormbuddy) john@john-Precision-3510:~/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca$ python manage.py migrate
Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/__init__.py", line 355, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/base.py", line 327, in execute
    self.check()
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/base.py", line 359, in check
    include_deployment_checks=include_deployment_checks,
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 62, in _run_checks
    issues.extend(super(Command, self)._run_checks(**kwargs))
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/management/base.py", line 346, in _run_checks
    return checks.run_checks(**kwargs)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/checks/registry.py", line 81, in run_checks
    new_errors = check(app_configs=app_configs)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/checks/urls.py", line 16, in check_url_config
    return check_resolver(resolver)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/core/checks/urls.py", line 26, in check_resolver
    return check_method()
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/urls/resolvers.py", line 254, in check
    for pattern in self.url_patterns:
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/urls/resolvers.py", line 405, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/urls/resolvers.py", line 398, in urlconf_module
    return import_module(self.urlconf_name)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookwormbud/urls.py", line 24, in <module>
    url(r'^',           include('bookmarks.urls',   namespace='bookmarks')),
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/conf/urls/__init__.py", line 50, in include
    urlconf_module = import_module(urlconf_module)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/urls.py", line 4, in <module>
    from bookmarks import views
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/views.py", line 24, in <module>
    from bookmarks.forms        import ArticleForm, TagForm, TagSelectForm, EditArticleForm, AddedDateCalendarForm, LastViewedDateCalendarForm
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/forms.py", line 120, in <module>
    class TagSelectForm(forms.ModelForm):
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/forms.py", line 127, in TagSelectForm
    choices=get_tag_choices()
  File "/home/john/Documents/cody_work/codyc54321-bookwormbud-f7f43c3908ca/bookmarks/forms.py", line 112, in get_tag_choices
    if tags:
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 258, in __nonzero__
    return type(self).__bool__(self)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 254, in __bool__
    self._fetch_all()
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 1118, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/query.py", line 53, in __iter__
    results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
  File "/home/john/anaconda3/envs/bookwormbuddy/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 886, in execute_sql
    raise original_exception
django.db.utils.OperationalError: no such table: bookmarks_mytag

該項目將立即安裝在另一台筆記本電腦上，但我不記得它是如何設置的。 sqlite db已被刪除，並且按照據說在SO上所做的那樣重新設置為空。 任何幫助表示贊賞，謝謝

Answer 1

在migrate之前，您是否嘗試過運行python manage.py makemigrations ？

Answer 2

您正在手動創建一個空的db文件。 您不需要手動創建該文件。 刪除您的“ db.sqlite3”文件，然后運行命令，

python manage.py makemigrations

如果以上命令顯示“未檢測到更改”，則運行此命令，

python manage.py makemigrations app_name

其中，app_name將是您的models.py文件所在的目錄名稱，

使用上述命令，您已經成功創建了遷移文件，現在，simpy運行，

python manage.py migrate

我希望這個幫助