Changes 11/25/13

Math Drill:

• Wrote a login.tpl page with user and password fields
• Researched hashing algorithms and how to safely store passwords
• Began creating a database to hold username and password and eventually other stuff

Changes 11/22/13

Math Drill:

• Fixed 500 Internal Server error: I typed student.trim() rather than student.strip(), and it didn't print out the stack trace for some reason, making it very hard to troubleshoot
• This was fixed in two ways:
• Code was added to make it able to run with both python3 run.py and google_appengine/dev_appserver.py projects/math_drill/:
• dev = False
  # If -l flag is used, run in python3 mode
  if (len(sys.argv) > 1 and (sys.argv[1] == '-l' or sys.argv[1] == '-local')):
      dev = True
      print('RUNNING IN LOCAL MODE (Non Google App Engine)')
  
  if dev:
      app = bottle
  else:
      app = Bottle()
  
  curdir = ''
  if dev:
      curdir = os.path.dirname(os.path.abspath(__file__)) + '/'
  
  ...
  # Other Code
  ...
  
  if dev:
      bottle.run()
  else:
      bottle.run(app=app, server="gae", debug=True)
  
  
• The second, MUCH easier way of fixing the problem is simply to add debug=True to the bottle.run() statement (making it bottle.run(app=app, server="gae", debug=True)). This causes the stack trace to print on the 500 Internal Server Error page itself (although the stack trace still doesn't print in the console)
• The add/remove students functionality of the /admin/students/ page finally seems to be working as intended

Changes 11/21/13 Part 2

Math Drill:

• Made a .vimrc file to set tab to four spaces, which makes python programming much easier
• Added comments to postStudents() method explaining what certain code does
• Saved the <textarea> input to a variable so that it can be parsed and added to students[]
• Learned that you can write mergedList = list1 + list2, which is good to know for future code 
• Keep running into weird problems where the server will give a 500 page but not output any python errors.  This is frustrating and it is very hard to tell what is going wrong.

Changes 11/21/13 Part 1

Math Drill:

• Fixed the list of deletions not checking against the right string
• Used '<br>'.join(debuglist) to easily print the list of students in html form, this is a pretty useful python function
• Checking the delete box now removes that student from the students[] list, but not the text file (yet)
• Got a lot of "internal server error" without a stack trace or anything, so that took a while to fix.  I still don't know what was causing that
• Added a textarea for entering additional students

Changes 11/20/13

Post-Note:

• Fixed that only the submitter field was being checked for being null or ''
• Uploaded new version to Google App Engine
• Also figured out that if you put the version number before an App Engine url, you can use different versions of the program. For example http://0-1.post-note.appspot.com/ vs http://0-9.post-note.appspot.com/

Math-Drill:

• Added page /admin/students, which dynamically generates a list of all the students names with checkboxes next to them, using embedded code in the template file
• % for student in students:
      {{student}}: <input type="checkbox" name="{{student}}_delete" value="Delete"><br>
  % end
• Added method to POST /admin/students/submit
• Submit button returns a page listing which students are being kept and deleted (although nothing actually changes yet)

Changes 11/19/13

Post Note:

• Fixed the "_blank" attribute on the form, which was causing a new tab to open
• Updated css to style the page
• Added bottle.redirect('/') so that the pages refreshes when submit is pressed
• Updated form to have two text boxes, one for the submitter name and one for the actual text
• Added checks to make sure the data has been submitted properly without blank fields

Changes 11/15/13

Post-note (Bottle app):

• Simple bottle app to look at how POST works for bottle and web forms in general
• Text box allows for text entry, and when submit is clicked, the text from the text box is put in a variable, which is then set to a <h2> element
• Code was largely copied from Math Drill and adapted
• Learned about the app.post() method and how it interfaces with the webpage
• Learned about the python global keyword and how it is used
• Interestingly, the global  message variable seems to clear itself after awhile; I assume this is due to Google's hosting servers wanting to save resources
• App was uploaded to Google App Engine (after learning the process with Math Drill it was really easy, too)
• App is live at www.post-note.appspot.com
• Styling and other stuff is eventually going to be added
• The code will probably be cleaned up, since this is serves as a good example for how POST works in bottle