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Work 4: It's login, login, it's better than bad, it's good!

posted Sep 29, 2016, 6:03 AM by JonAlf Dyrland-Weaver   [ updated Oct 6, 2016, 8:35 AM ]
Yes, I know you have no idea what the title is about, so go here, you're welcome.

Continue working on the login flask app we have been building in class. For now, hardcode in your flask app an example username and password combination. Include the following features:
  • The root route go to the login form
  • The form send data to the flask app
  • The authentication function should return a template with either a success or failure message. This should be the same template for both.

Add the following to what you had before:

  • Give the form 2 buttons, login and register
  • Register should allow the user to enter a username/password and save it to a passwords file
    • Make sure you hash the passwords when you store them.
    • Register should fail if the username is already registered.
    • If register works, then load the login page but display a message signifying that the account was created.
  • Login should check the username/password combination
    • If login succeeds, show a success message
    • If login failed, then a message should display what went wrong (bad password? bad username?)
    • All the messages should be from the same template.

AND ANOTHER WONDERFUL LOGIN UPDATE
  • Implement sessions and redirection.
  • When a user logs in, a session should be established with the username stored
  • Root route should have 2 behaviors now
    • If the user is logged in, it should take them to a welcome page
    • If the user is not logged in, it should take them to the login/register page
  • Welcome page (successful login) should have a logout button that goes to a separate route that will log the user out of the session

Submit this as login in the workshop.
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