Conquering Login & Register Endpoints in Flask

Flesier Onyango
2 min readDec 6, 2023

Yesterday was a good moment in my ongoing quest to build a robust Flask app. I finally tackled the essential login and register endpoints.

With a focused approach and a dash of Flask magic, I managed to:

Craft a /login endpoint that's security-conscious and user-friendly:

  • Accepts username/email and password via POST requests.
  • Validates credentials against the secure vault of my database (no plain text passwords here!).
  • Rewards successful logins with a shiny session token — the key to unlocking the app’s treasures.

Craft a /register endpoint where users can forge their own identities:

  • Unique usernames and emails are a must-have.
  • Strong passwords are mandatory.
  • Validated data gets transformed into a spanking new user object, proudly stored in my database.

I also implemented robust error handling:

  • Invalid credentials? I have a clear message ready.
  • Duplicate usernames/emails? I point out the existing resident.

My ambition knows no bounds:

  • User details: Profiles, preferences, the whole shebang!
  • Social logins: Seamless entry for the social butterflies out there.
  • Granular access control: Different users, different privileges — gotta keep things orderly.

Here are my trusty companions on this adventure:

  • Flask-SQLAlchemy: My database sherpa, keeping user data safe and sound.
  • Flask-Login/Flask-JWT: Managing sessions and tokens with ease.
  • Secure hashing and salting: Because passwords are precious jewels, I treat them with respect.

And of course, I have a treasure trove of resources at my fingertips:

  • Flask documentation: My map to the Flask universe.
  • Tutorials and blog posts: Tales of fellow developers who’ve braved this path before me.

So, fellow developers, Share your tips, tricks, and battle scars.

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Flesier Onyango
Flesier Onyango

Written by Flesier Onyango

I am a passionate and dedicated professional with a strong foundation in software development and system administration.

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