प्रोग्रामिंग त्रुटि/संबंध "main_post" मौजूद नहीं है

Question

हैलो मैं django और postgresql का उपयोग कर रहा हूं। और मुझे उपरोक्त त्रुटि मिल रही है। मैं डेटाबेस इस तरह की स्थापना की है:

DATABASES = { 
    'default': { 
     'ENGINE': 'django.db.backends.postgresql_psycopg2', 
     'NAME': 'django_db', 
     'USER': 'xxx', 
     'PASSWORD':'xxxx', 
     'HOST':'localhost', 
     'PORT':'5432', 
    } 
} 

SQLite के साथ इस तरह की समस्याओं के लिए, मैं सिर्फ डीबी (mydatabase) को हटा लेकिन इस बार मैं नहीं देख सकते हैं, जहां मेरे db है कर सकती थीं। sqlflush से

Environment: 


Request Method: GET 
Request URL: http://127.0.0.1:8000/ 

Django Version: 1.8.4 
Python Version: 2.7.6 
Installed Applications: 
('django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'main', 
'tastypie') 
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 "/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    132.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 
File "/ebagu/main/views.py" in index 
    47.    post_list = sorted(post_list, key=lambda x: x.get_score(), reverse=True) 
File "/env/local/lib/python2.7/site-packages/django/db/models/query.py" in __iter__ 
    162.   self._fetch_all() 
File "/env/local/lib/python2.7/site-packages/django/db/models/query.py" in _fetch_all 
    965.    self._result_cache = list(self.iterator()) 
File "/env/local/lib/python2.7/site-packages/django/db/models/query.py" in iterator 
    238.   results = compiler.execute_sql() 
File "/env/local/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql 
    840.    cursor.execute(sql, params) 
File "/env/local/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 
    79.    return super(CursorDebugWrapper, self).execute(sql, params) 
File "/env/local/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 
    64. .cursor.execute(sql, params) 
File "/home/younggue/Desktop/ebagu1/env/local/lib/python2.7/site-packages/django/db/utils.py" in __exit__ 
    97.     six.reraise(dj_exc_type, dj_exc_value, traceback) 
File "/env/local/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 
    64.     return self.cursor.execute(sql, params) 

Exception Type: ProgrammingError at/
Exception Value: relation "main_post" does not exist 
LINE 1: ...id", "main_post"."views", "main_post"."slug" FROM "main_post... 
                  ^

आउटपुट: syncdb/migrate से

BEGIN; 
TRUNCATE "django_admin_log", "auth_permission", "auth_group", "auth_group_permissions", "django_session", "auth_user_groups", "auth_user_user_permissions", "main_category", "tastypie_apiaccess", "main_vote", "auth_user", "tastypie_apikey", "django_content_type"; 
SELECT setval(pg_get_serial_sequence('"django_admin_log"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"auth_permission"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"auth_group"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"auth_user"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"django_content_type"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"main_category"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"main_post"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"main_vote"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"tastypie_apiaccess"','id'), 1, false); 
SELECT setval(pg_get_serial_sequence('"tastypie_apikey"','id'), 1, false); 

COMMIT; 

आउटपुट:

Operations to perform: 
    Synchronize unmigrated apps: staticfiles, froala_editor, messages, crispy_forms 
    Apply all migrations: userena, sessions, admin, guardian, tastypie, auth, contenttypes, accounts, main, easy_thumbnails 
Synchronizing apps without migrations: 
    Creating tables... 
    Running deferred SQL... 
    Installing custom SQL... 
Running migrations: 
    No migrations to apply. 

Answer 1

इस विधि के साथ PostgreSQL की स्थापना रद्द: How to thoroughly purge and reinstall postgresql on ubuntu? तो this youtube video की मदद से फिर से स्थापित करने समस्या ठीक हो गई।