I am on chapter 10 of headfirst python second edition. got most of the
prior codes to work but am stuck on this one. I will add the
simple_webapp.py which is a decorator enabled and checker.py which is
the decorator. when I go into 127.0.0.1:5000 and enter I get the correct
response. 127.0.0.1:5000/page1 gets me 'you are not logged in' also correct.
'127.0.0.1:5000/login' returns 'you are now logged in' which is correct
but '127.0.0.1:5000/page1' after that should return 'this is page 1' but
instead returns 'you are not logged in'.
When I login to page 1 the 'session['logged_in'] = True' should still be
true but apparently it has not been passed to 'check_logged_in'.
I am stumped and do not know how to proceed to figure this out.
Here are the codes
Also they are attached to this email. I am hoping someone can show me
the errors of my ways. hopefully it is something simple but I have gone
over it a lot and think the code is correct.
Thank you for your attention and help.
Peter Risley
checker.py
from flask import session
from functools import wraps
def check_logged_in(func):
@wraps(func)
def wrapper(*args, **kwargs):
if 'logged _in' in session:
return func(*args, **kwargs)
return 'You are not logged in.'
return wrapper
simple_webapp.py
from flask import Flask, session
from checker import check_logged_in
"""this 'simple_webapp.py' , which pulls all of chp 10 code together. When
you need to restrict access to specific URLs, base your strategy on this
webapp's mechanism.
This uses checker.py check_logged_in and which is a decorator function
to do the work."""
app = Flask(__name__)
@app.route('/')
def hello() -> str:
return 'Hello from the simple webapp.'
@app.route('/page1')
@check_logged_in
def page1():
return 'this is page 1.'
@app.route('/page2')
@check_logged_in
def page2():
return 'this is page 2.'
@app.route('/page3')
@check_logged_in
def page3():
return 'this is page 3.'
@app.route('/login')
def do_login() -> str:
session['logged_in'] = True
return 'you are now logged in.'
@app.route('/logout')
def do_logout() -> str:
session.pop('logged_in')
return 'you are now logged out.'
app.secret_key = 'yes'
if __name__ == '__main__':
app.run(debug=True)
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