Django没有创建表格＃34;表django_session不存在＆＃34;

时间：2016-07-25 23:10:50

标签： python mysql django

每当我运行python manage.py migrate时，我都无法获得所需的表格。我得到的唯一表格是django_content_type和django_migrations。因此我无法登录管理页面或创建超级用户。我正在使用MySQL-connector-python-rf，python 3.4和Django 1.9.8我已按照删除表的说明创建新数据库，问题仍然存在。

这是我在settings.py

中设置的数据库和应用 
# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    'usermie',
]

MIDDLEWARE_CLASSES = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

DATABASES = {
    'default': {
        'ENGINE': 'mysql.connector.django',
        'NAME': 'testerdb',
        'USER': 'root',
        'PASSWORD': '',
    }
}

之前我在使用django并在同一台计算机上处​​理项目，但现在我不知道发生了什么以及为什么我没有得到这些表。

以下是我运行python manage.py migrate

时获得的内容 
(mie) C:\Users\dane_\DjangoProjects\pagemie>python manage.py makemigrations
Migrations for 'usermie':
  0001_initial.py:
    - Create model Usermie

(mie) C:\Users\dane_\DjangoProjects\pagemie>python manage.py migrate
Operations to perform:                                                                                                    
Apply all migrations: contenttypes, auth, sessions, admin, usermie                                                    
Running migrations:                                                                                                       
Rendering model states... DONE
  Applying contenttypes.0001_initial...Traceback (most recent call last):                                                 
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\django\base.py", line 177, in _execute_wrapper                                                                 
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\cursor.py", line 515, in execute                                                                               
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\connection.py", line 488, in cmd_query                                                                         
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\connection.py", line 395, in _handle_result
mysql.connector.errors.ProgrammingError: 1050 (42S01): Table 'django_content_type' already exists
During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)                                                                                   
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\__init__.py", line 353, in execute_from_command_line
    utility.execute()                                                                                                     
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\__init__.py", line 345, in execute                                                                                                                            
self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\base.py", line 348, in run_from_argv                                                                                                                          
self.execute(*args, **cmd_options)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\base.py", line 399, in execute
    output = self.handle(*args, **options)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\commands\migrate.py", line 200, in handle                                                                                                                     
executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\migrations\executor.py", line 92, in migrate       
self._migrate_all_forwards(plan, full_plan, fake=fake, fake_initial=fake_initial)                                     
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\migrations\executor.py", line 121, in _migrate_all_forwards
    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)                                  
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\migrations\executor.py", line 198, in apply_migration
    state = migration.apply(state, schema_editor)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\migrations\migration.py", line 123, in apply       
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\migrations\operations\models.py", line 59, in database_forwards
    schema_editor.create_model(model)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\backends\base\schema.py", line 284, in create_model
    self.execute(sql, params or None)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\backends\base\schema.py", line 110, in execute
    cursor.execute(sql, params)                                                                                           
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\backends\utils.py", line 79, in execute            
return super(CursorDebugWrapper, self).execute(sql, params)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\backends\utils.py", line 62, in execute
    return self.cursor.execute(sql)                                                                                       
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\django\base.py", line 227, in execute
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\django\base.py", line 180, in _execute_wrapper
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\utils\six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\django\base.py", line 177, in _execute_wrapper                                                                 
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\cursor.py", line 515, in execute                                                                               
File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\connection.py", line 488, in cmd_query
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\connection.py", line 395, in _handle_result                                                                  
django.db.utils.ProgrammingError: Table 'django_content_type' already exists

2 个答案:

答案 0 :(得分：1)

MySql不接受日期时间值中的时区信息，例如<!DOCTYPE html> <html> <head> <title></title> <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.js"> </script> <script> var mainApp = angular.module("mainApp", []); mainApp.controller('startUpController', function($scope) { $scope.funding = { startingEstimate: 0 }; $scope.calculate = function () { $scope.funding.needed = $scope.funding.startingEstimate * 10; }; $scope.submitFN = function () { window.alert('Go and find more customers.') } $scope.resetFN = function () { $scope.funding.startingEstimate = 0; } }); </script> </head> <body> <div ng-app='mainApp'> <form ng-submit="submitFN()" ng-controller="startUpController"> Starting: <input type="text" ng-change="calculate()" ng-model="funding.startingEstimate"/> Recommended: {{funding.needed}} <button>Fund my startup!</button> <button type="button" ng-click="resetFN()">Reset</button> </form> </div> </body> </html>，问题是'2016-07-25 22:45:16.507552+00:00'部分。默认情况下，Django应该使用天真的日期时间对象，如下所示：https://docs.djangoproject.com/en/1.9/topics/i18n/timezones/所以通常这不应该是一个问题，但似乎您的数据包含时区。 也许您可以在settings.py中检查USE_TZ是否为False，然后尝试再次运行迁移。

答案 1 :(得分：-1)

我应该拥有的所有表格现在都在这里。这就是我做的。我删除了在数据库中创建的所有表。我还从usermie删除了INSTALLED_APPS。之后我跑了python manage.py migrate。我想知道将USE_TZ更改为False是否做了什么，因为我在数据库中多次删除了表，但没有成功。我还删除了MySQL-connector-python-rf。

我仍然收到这些消息，但现在看来都很好：

(mie) C:\Users\dane_\DjangoProjects\pagemie>python manage.py migrate
Operations to perform:
  Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
  Rendering model states... DONE
  Applying contenttypes.0001_initial... OK
  Applying auth.0001_initial... OK
  Applying admin.0001_initial... OK
  Applying admin.0002_logentry_remove_auto_add... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0002_alter_permission_name_max_length... OK
  Applying auth.0003_alter_user_email_max_length... OK
  Applying auth.0004_alter_user_username_opts... OK
  Applying auth.0005_alter_user_last_login_null... OK
  Applying auth.0006_require_contenttypes_0002... OK
  Applying auth.0007_alter_validators_add_error_messages... OK
  Applying sessions.0001_initial... OK
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\__init__.py", line 353, in execute_from_command_line
    utility.execute()
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\__init__.py", line 345, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\base.py", line 348, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\base.py", line 399, in execute
    output = self.handle(*args, **options)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\commands\migrate.py", line 204, in handle
    emit_post_migrate_signal(self.verbosity, self.interactive, connection.alias)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\core\management\sql.py", line 50, in emit_post_migrate_signal
    using=db)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\dispatch\dispatcher.py", line 192, in send
    response = receiver(signal=self, sender=sender, **named)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\contrib\auth\management\__init__.py", line 126, in create_permissions
    Permission.objects.using(using).bulk_create(perms)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\models\query.py", line 450, in bulk_create
    self._batched_insert(objs_without_pk, fields, batch_size)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\models\query.py", line 1056, in _batched_insert
    using=self.db)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\models\manager.py", line 122, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\models\query.py", line 1039, in _insert
    return query.get_compiler(using=using).execute_sql(return_id)
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\models\sql\compiler.py", line 1059, in execute_sql
    for sql, params in self.as_sql():
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\django\db\models\sql\compiler.py", line 1047, in as_sql
    result.append(self.connection.ops.bulk_insert_sql(fields, placeholder_rows))
  File "C:\Users\dane_\DjangoVirtualEnvs\mie\lib\site-packages\mysql_connector_python_rf-2.1.3-py3.4-win-amd64.egg\mysql\connector\django\operations.py", line 223, in bulk_insert_sql
TypeError: can't multiply sequence by non-int of type 'tuple'
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