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Udacity course CS253 - Web Development
Problem Set 2 - 2
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| # Courtney S. - Udacity CS253 - Web Development | |
| import webapp2 | |
| import cgi | |
| import re | |
| form1=""" | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Unit 2 Signup</title> | |
| </head> | |
| <body> | |
| <h2>Signup</h2> | |
| <form method="post"> | |
| <label>Username <input type="text" name="username" value="%(username)s"> | |
| <span style="color: red">%(e_name)s</span></label> | |
| <br> | |
| <label>Password <input type="password" name="password"> | |
| <span style="color: red">%(e_pass)s</span></label> | |
| <br> | |
| <label>Verify Password <input type="password" name="verify"> | |
| <span style="color: red">%(e_verify)s</span></label> | |
| <br> | |
| <label>Email (optional) <input type="text" name="email" value="%(email)s"> | |
| <span style="color: red">%(e_email)s</span></label> | |
| <br> | |
| <input type="submit"> | |
| </form> | |
| </body> | |
| </html> | |
| """ | |
| form2=""" | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Unit 2 Signup - Welcome</title> | |
| </head> | |
| <body> | |
| <h2>Welcome, %s!</h2> | |
| </body> | |
| </html> | |
| """ | |
| def escape_html(s): | |
| return cgi.escape(s, quote = True) | |
| USER_RE = re.compile(r"^[a-zA-z0-9_-]{3,20}$") | |
| PASS_RE = re.compile(r"^.{3,20}$") | |
| EMAIL_RE = re.compile(r"^[\S]+@[\S]+\.[\S]+$") | |
| def valid_name(s): | |
| return USER_RE.match(s) | |
| def valid_pass(s): | |
| return PASS_RE.match(s) | |
| def valid_email(s): | |
| if s == "": | |
| return True | |
| else: | |
| return EMAIL_RE.match(s) | |
| def match_pass(p1, p2): | |
| return p1 == p2 | |
| class Signup(webapp2.RequestHandler): | |
| def write_form(self, username="", email="", | |
| e_name="", e_pass="", e_verify="", e_email=""): | |
| self.response.out.write(form1 % {"username": escape_html(username), | |
| "email": escape_html(email), | |
| "e_name": e_name, | |
| "e_pass": e_pass, | |
| "e_verify": e_verify, | |
| "e_email": e_email}) | |
| def get(self): | |
| self.write_form() | |
| def post(self): | |
| user_name = self.request.get('username') | |
| user_pass = self.request.get('password') | |
| user_verify = self.request.get('verify') | |
| user_email = self.request.get('email') | |
| name = valid_name(user_name) | |
| password = valid_pass(user_pass) | |
| verify = valid_pass(user_verify) | |
| email = valid_email(user_email) | |
| e_name = '' | |
| e_pass = '' | |
| e_verify = '' | |
| e_email = '' | |
| if not name: | |
| e_name = 'That is not a valid name' | |
| if not password: | |
| e_pass = 'That is not a valid password' | |
| if not match_pass(user_pass, user_verify): | |
| e_verify = 'The two passwords do not match' | |
| if not email: | |
| e_email = 'That is not a valid email' | |
| if password and (not e_verify) and name: | |
| self.redirect('/welcome?username=%s' % user_name) | |
| else: | |
| self.write_form(user_name, user_email, e_name, e_pass, e_verify, e_email) | |
| class WelcomeHandler(webapp2.RequestHandler): | |
| def get(self): | |
| username = self.request.get('username') | |
| self.response.out.write(form2 % username) | |
| app = webapp2.WSGIApplication([ | |
| ('/', Signup), | |
| ('/welcome', WelcomeHandler) | |
| ], debug=True) |
Thanks a lot! I didn't figure out about redirecting - self.redirect ( '/ welcome username =% s?'% User_name). Path differ from mapping handler - I stucked with it.
By the way: this code permits registration with incorrect email - it's wrong behavior.
By the way 2: style of registration page you can copy from instruction page - right click - view source code.
Good job.
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Thank You.