In our Django project that we are testing via DO Apps. I followed along with this tutorial

and added this block of code.

DEVELOPMENT_MODE = os.getenv("DEVELOPMENT_MODE", "False") == "True"

        "default": {
            "ENGINE": "Our local database postgres creds",
            "NAME": os.path.join(BASE_DIR, "postgres "),
elif len(sys.argv) > 0 and sys.argv[1] != 'collectstatic':
    if os.getenv("DATABASE_URL", None) is None:
        raise Exception("DATABASE_URL environment variable not defined")
        "default": dj_database_url.parse(os.environ.get("DATABASE_URL")),

In our environment variable at the app, we have set the Debug mode to True and DEVELOPMENT_MODE is also True.

The issue is that every time we try to run the local server. We see a cookie that is creating a session and crashing the site. We have to delete that cookie to run the local env and I am suspecting that this is caused by this block of code that I mentioned above. Is my assumption is correct and how can I fix this?

Second, what is the best practice to add the env variable for the dev branch that can work locally and also on digital ocean apps? I am thinking that on my local machine

Debug == TRUE

and the env variable at the DO app as.

Debug == False

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1 answer

I suspect your cookie issue is related to not setting a stable DJANGOSECRETKEY / SECRET_KEY value. lays out good practices for managing env vars. Be sure to add the .env file to the .gitignore to avoid committing anything sensitive to github.