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Name: [008] Kyran Dale
Member: 107 months
Authored: 16 videos
Description: I'm one of the co-founders of Showmedo and an academic researcher by profession. My peripatetic path has taken me from a Philosophy degree via Artificial Intelligence and Evolutionary Robotics to a PhD in Neuroscience. I spent five years in a small room with a colony of reluctant bumble-bees, becomi ...

Using Google's User Service [ID:721] (4/5)

in series: A Gentle Introduction to the Google App Engine Python SDK

(Showmedo is undergoing major changes. To report any problems viewing the videos please email us and include browser and OS specifics. Cheers - Kyran.)

The Google App Engine (GAE) Users service allows your application to integrate with Google user accounts. For example, if a user is logged into their Gmail account, they will be recognized and validated. While most web frameworks provide their own user-management systems the GAE User service has 'out of the box' convenience and leverages Google's experience, at the expense of some control and privacy.

# Using the User Service
import wsgiref.handlers

from google.appengine.api import users
from google.appengine.ext import webapp

class MainPage(webapp.RequestHandler):
  def get(self):
    user = users.get_current_user()

    if user:
      self.response.headers['Content-Type'] = 'text/plain'
      self.response.out.write('Hello, ' + user.nickname())
    else:
      self.redirect(users.create_login_url(self.request.uri))

def main():
  application = webapp.WSGIApplication(
                                       [('/', MainPage)],
                                       debug=True)
  wsgiref.handlers.CGIHandler().run(application)

if __name__ == "__main__":
  main()

#app.yaml config script:

#application: helloworld
#version: 1
#runtime: python
#api_version: 1

#handlers:
#- url: /.*
  #script: helloworld.py

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  • Published: 78 months ago

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Very nice video! So are the other parts of this series.

A note though: the video ended too "suddenly". At the end, it was not obvious for me that the video has really ended, I thought that there was some problem with my video player. It wasn't a problem with the first three videos -- firstly because you said what would come in the next video, and secondly because they did not end suddenly.

Keep up the good work and thanks again!


Ok, I see. On the first pass, the app asks you to login because "user" wasn't set. In the else branch we get the registration page that embeds a request back to 'MainPage'.

I need to brush up (google) on how the RequestHandlers, get, and post methods work in HTML.


the showmedo on video blocks example code in many shots, I am a SQL database programmer new to WEB programming. I have developed a Tennis schedulng package which I want to transfer to the WEB. I am trying Google Apps to do this. I hope you will produce a video that shows what you can do and what you can't do with Google Apps.

I need to be able to have a Web Page with many (8) list boxes, 10 combo boxes, 14 commoan buttons, etc. Can I?

Thanks

Fred Dunfey


Useful, I can see now it is convenient for Google, that programmers use their Google App Engine.


Video published, thanks for contributing to ShowMeDo


Video published, thanks for contributing to ShowMeDo


Showmedo is a peer-produced video-tutorials and screencasts site for free and open-source software (FOSS)- with the exception of some club videos, the large majority are free to watch and download.

how to help » about » faq »

Educating the Open-source Community With Showmedo

Although as important as the software it supports, education and documentation are relatively neglected in the Open-source world. Coders love to code, and explaining how best to use or improve the software tends to be deferred or even sidelined.

At Showmedo we believe the community can play a vital role here and also say thanks for the tools and software that make our lives easier. If you have a piece of software you love or a programming langugage you are enthusiastic about, why not make a screencast showing others how to use it? All the stuff you wish you'd been told, the tips, tricks, insights that would have saved you time and frustration.

Screencasting is easier than you think, and we're happy to help you. You can emailus for advice or just use some of the how-to screencasts on the site. This screencasting learning-pathis a good place to start.

Kudos and Thanks for Kyran

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