django not switching to Postres when deploying to Heroku - django

Question

I deployed my django app with Heroku and I am having troubles with connecting to Postgres.
If I run python manage.py createsuperuser after running heroku ps:exec --app produceit (so I am inside the Heroku instance's terminal), it says that I successfully created a superuser but nothing is written into Heroku Postgress DB...so I can't login into neither /admin nor my app.
I therefore run
heroku ps:exec --app produceit
python manage.py shell
from mywebsite.settings import DATABASES
and it seems like the settings.py has the variable DATABASE still connected to sqlite (see pic)
Funny enough, if I hardcode an admin into Heroku's Postgres DB, loging and then create an instance of one of my models from the app itself (like I create a blog's post)...it actually writes into Postgres and I see it on the Front End.
So basically it's like the app is working on Postgress BUT the terminal is running on SQLite.
What can I do? My settings are below
"""
Django settings for mywebsite project.
Generated by 'django-admin startproject' using Django 3.2.5.
For more information on this file, see
https://docs.djangoproject.com/en/3.2/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.2/ref/settings/
"""
from pathlib import Path
import os
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = ''
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG=True
DEBUG_PROPAGATE_EXCEPTIONS = True
ALLOWED_HOSTS = ['localhost', '127.0.0.1', 'produceit.herokuapp.com']
# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'action.apps.ActionConfig',
'django_extensions',
'bootstrap_modal_forms',
'widget_tweaks',
]
MIDDLEWARE = [
'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',
#'whitenoise.middleware.WhiteNoiseMiddleware'
]
ROOT_URLCONF = 'mywebsite.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
WSGI_APPLICATION = 'mywebsite.wsgi.application'
# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': BASE_DIR / 'db.sqlite3',
}
}
#DATABASES = {
# 'default': {
# 'ENGINE': 'django.db.backends.postgresql',
# 'NAME': '',
# 'HOST': '',
# 'PORT': 5432,
# 'USER': '',
# 'PASSWORD': '',
# }
# }
# Parse database configuration from $DATABASE_URL
#import dj_database_url
#db_from_env = dj_database_url.config(conn_max_age=500)
#DATABASES['default'].update(db_from_env)
# Password validation
# https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validators
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]
# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/
# Static files (CSS, JavaScript, Images)
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATIC_URL = '/static/'
# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field
#DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
import django_on_heroku
django_on_heroku.settings(locals())
#SECURE_SSL_REDIRECT=True
#SESSION_COOKIE_SECURE=True
#CSRF_COOKIE_SECURE=True
#SECURE_HSTS_SECONDS = 31536000
#SECURE_HSTS_INCLUDE_SUBDOMAINS=True
#SECURE_HSTS_PRELOAD=True
#import django_heroku
#django_heroku.settings(locals())

Answer 1

To get the correct environment variables etc., connect to the terminal via the Heroku dashboard and try it again. You can find it in "More" > "Run Console" > Type in "Bash" on your Heroku-app.