R1D10 Oops, Something Went Wrong.

February 7, 2018 | programming | python |

I’m going to get back to React Native eventually, but tonight I spent some time working on a new Flask app that I started last week. I worked on trying to fix a few bugs with the Auth0 flow but spent most of my night digging through the logs and staring at this image.

One interesting thing about this auth flow is that it enabled you to use wraps and make a decorator. This is a powerful functional programming concept in python that makes life a whole lot easier.

def requires_auth(f):
    @wraps(f)
    def decorated(*args, **kwargs):
        if 'JWT_PAYLOAD' not in session:
            return redirect('/login')
        return f(*args, **kwargs)

    return decorated

This concept is a “Higher Order Function” or a function that returns another function. If you are a JS developer you do this all day long. In this specific context this allows you to use the @requires_auth decorator on routes to ensure that a user is logged in before serving that route.

In other news, I also spent some time today learning more about actually using Redis. I think I’ve installed it and monitored it half a dozen times but I have never had the chance to actually do anything useful with it.

A great resource that I found was this article on how to go from zero to Redis master in 30 minutes. I also purchased Medis which is a beautiful MacOS GUI for Redis that is available in the app store for $5.

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Lev Lazinskiy

R1D10 Oops, Something Went Wrong.

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