relation "polls_article" does not exist

[Sandy Leon]

Hello everyone, I have been using Heroku to try and deploy my Django site. 

When running the command 'heroku open' Django gives me this error

Environment:

Request Method: GET

Request URL: https://secure-waters-81472.herokuapp.com/

Django Version: 2.0

Python Version: 3.6.6

Installed Applications:

['polls.apps.PollsConfig',

 'django.contrib.admin',

 'django.contrib.auth',

 'django.contrib.contenttypes',

 'django.contrib.sessions',

 'django.contrib.messages',

 'django.contrib.staticfiles']

Installed Middleware:

('whitenoise.middleware.WhiteNoiseMiddleware',

 'django.middleware.security.SecurityMiddleware',

 'django.contrib.sessions.middleware.SessionMiddleware',

 'django.middleware.common.CommonMiddleware',

 'django.middleware.csrf.CsrfViewMiddleware',

 'django.contrib.auth.middleware.AuthenticationMiddleware',

 'django.contrib.messages.middleware.MessageMiddleware',

 'django.middleware.clickjacking.XFrameOptionsMiddleware')

Template error:

In template /app/polls/templates/polls/home.html, error at line 6

   relation "polls_article" does not exist

LINE 1: ..._article"."body", "polls_article"."pub_date" FROM "polls_art...

                                                             ^

   1 : {% load static %}

   2 : <link rel="stylesheet" type="text/css" href="{% static 'polls/home_style.css' %}"/>

   3 : 

   4 : <font color="white"><center><h1>Home</h1>

   5 : 

   6 :  {% for article in object_list %} 

   7 :     <font color="white"><h2>{{ article.headline }}</h2>

   8 : <!--this attribute may need tweaking in the future-->

   9 : <font color="white"><p style="margin-left: 320px; margin-right: 300px" >{{article.body}}</p>

   10 : {% empty %}

   11 :     <li>No articles yet.</li>

   12 : {% endfor %}

   13 : 

   14 : </center>

   15 : 

   16 : 

Traceback:

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute

  85.                 return self.cursor.execute(sql, params)

The above exception (relation "polls_article" does not exist

LINE 1: ..._article"."body", "polls_article"."pub_date" FROM "polls_art...

                                                             ^

) was the direct cause of the following exception:

File "/app/.heroku/python/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner

  35.             response = get_response(request)

File "/app/.heroku/python/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response

  158.                 response = self.process_exception_by_middleware(e, request)

File "/app/.heroku/python/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response

  156.                 response = response.render()

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/response.py" in render

  106.             self.content = self.rendered_content

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/response.py" in rendered_content

  83.         content = template.render(context, self._request)

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/backends/django.py" in render

  61.             return self.template.render(context)

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/base.py" in render

  175.                     return self._render(context)

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/base.py" in _render

  167.         return self.nodelist.render(context)

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/base.py" in render

  943.                 bit = node.render_annotated(context)

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/base.py" in render_annotated

  910.             return self.render(context)

File "/app/.heroku/python/lib/python3.6/site-packages/django/template/defaulttags.py" in render

  168.             len_values = len(values)

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/query.py" in __len__

  254.         self._fetch_all()

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/query.py" in _fetch_all

  1179.             self._result_cache = list(self._iterable_class(self))

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/query.py" in __iter__

  54.         results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in execute_sql

  1063.             cursor.execute(sql, params)

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in execute

  100.             return super().execute(sql, params)

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in execute

  68.         return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute_with_wrappers

  77.         return executor(sql, params, many, context)

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute

  85.                 return self.cursor.execute(sql, params)

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/utils.py" in __exit__

  89.                 raise dj_exc_value.with_traceback(traceback) from exc_value

File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute

  85.                 return self.cursor.execute(sql, params)

Exception Type: ProgrammingError at /

Exception Value: relation "polls_article" does not exist

LINE 1: ..._article"."body", "polls_article"."pub_date" FROM "polls_art...

                                                             ^

I have been at this for days....Any help would be hugely appreciated. Thank you.

[xcode101]

Any gist file we could check it out? Sorry to hear that you've been at this for days.

The piece of code accessing polls_article.

[Dario Heinisch]

You need to run python manage.py migrate. 

The database tables do not exists.

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