отношение «hello_greeting» не существует

Question

Я пытаюсь использовать учебник python в приложении Heroku (https://devcenter.heroku.com/articles/getting-started-with-python#introduction), и я получил эту ошибку, когда я добавил \ db в основное приложение, но работает с localhost.

Environment: 


Request Method: GET 
Request URL: https://<appname>.herokuapp.com/db 

Django Version: 1.9.2 
Python Version: 2.7.11 
Installed Applications: 
('django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'hello') 
Installed Middleware: 
('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', 
'django.middleware.security.SecurityMiddleware') 



Traceback: 

File "/app/.heroku/python/lib/python2.7/site- packages/django/core/handlers/base.py" in get_response 
    149.      response = self.process_exception_by_middleware(e, request) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    147.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "/app/hello/views.py" in db 
    17.  greeting.save() 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/base.py" in save 
    700.      force_update=force_update, update_fields=update_fields) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/base.py" in save_base 
    728.    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/base.py" in _save_table 
    812.    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/base.py" in _do_insert 
    851.        using=using, raw=raw) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/manager.py" in manager_method 
    122.     return getattr(self.get_queryset(), name)(*args, **kwargs) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/query.py" in _insert 
    1039.   return query.get_compiler(using=using).execute_sql(return_id) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql 
    1060.     cursor.execute(sql, params) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 
    79.    return super(CursorDebugWrapper, self).execute(sql, params) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 
    64.     return self.cursor.execute(sql, params) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/utils.py" in __exit__ 
    95.     six.reraise(dj_exc_type, dj_exc_value, traceback) 

File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 
    64.     return self.cursor.execute(sql, params) 

Exception Type: ProgrammingError at /db 
Exception Value: relation "hello_greeting" does not exist 
LINE 1: INSERT INTO "hello_greeting" ("when") VALUES ('2016-09-25T17... 
       ^

Благодарим за помощь.

Answer 1

Извините, моя ошибка. Я не смог мигрировать, поэтому проблема была решена с использованием

heroku run python manage.py migrate