I am a newborn baby programmer and have found I don't understand a few things about GAE.
I have my app.yaml setup to route to separate apps
handlers:
- url: /favicon\.ico
static_files: favicon.ico
upload: favicon\.ico
- url: /unit3.*
script: unit3.app
- url: /birthday.*
script: birthday.app
- url: /signup.*
script: signup.app
- url: /rot13.*
script: rot13.app
- url: .*
script: main.app
and then inside signup.app - the WSGI redirects people to a welcome page after a simple post request
import webapp2
import jinja2
import os
import re
template_dir=os.path.join(os.path.dirname(__file__), 'templates')
jinja_env= jinja2.Environment(loader= jinja2.FileSystemLoader(template_dir), autoescape = True)
USER_RE = re.compile(r"^[a-zA-Z0-9_-]{3,20}$")
def valid_username(username):
return username and USER_RE.match(username)
PASS_RE = re.compile(r"^.{3,20}$")
def valid_password(password):
return password and PASS_RE.match(password)
EMAIL_RE = re.compile(r'^[\S]+@[\S]+\.[\S]+$')
def valid_email(email):
return not email or EMAIL_RE.match(email)
def render_str(template,**parms):
t = jinja_env.get_template(template)
return t.render(parms)
class BaseHandler(webapp2.RequestHandler):
""" a BaseHandler object to render and write """
def render(self, template, **kw):
self.response.out.write(render_str(template, **kw))
def write(self, *a, **kw):
self.response.out.write(*a, **kw)
class SignUpHandler(BaseHandler):
def get(self):
self.render('signup.html')
def post(self):
have_error=False
username=self.request.get('username')
password=self.request.get('password')
verify=self.request.get('verify')
email=self.request.get('email')
params = dict(username = username,
email = email)
if not valid_username(username):
params['name_error']='that is not a valid name'
have_error=True
if not valid_password(password):
params['password_error']=('that is not a valid password')
have_error=True
elif password != verify:
params['verify_error']='your passwords dont match'
have_error=True
if not valid_email(email):
params['email_error']='that is not a valid email address'
have_error=True
if have_error:
params['message']=('Please type your info in again ' + username)
self.render('signup.html', **params)
else:
self.redirect('welcome?username=' + str(username))
class WelcomeHandler(BaseHandler):
def get(self):
username = self.request.get('username')
if valid_username(username):
self.render('welcome.html', username = username)
else:
self.redirect('signup')
app = webapp2.WSGIApplication([('/signup',SignUpHandler),
('/welcome',WelcomeHandler)]
,debug=True)
Though the WelcomeHandler doesn't find the templated html file, i get a 404.
Basically i get this 404 for anything routed via a RequestHandler.
I am pretty sure this is a basic misunderstanding that I have overlooked and can't easily correct with a google search.
Do I need to router everything in the .yaml? Why is this not the case when i just have generic URL handler?
You need to add the /welcome.*
route to your app.yaml
so it is served by signup.app
.
IN ADDITION , if I make a recommendation. You currently only support the routes /signup
and /welcome
in signup.app
:
app = webapp2.WSGIApplication([('/signup',SignUpHandler),
('/welcome',WelcomeHandler)]
,debug=True)
but you are routing all of /signup.*
in app.yaml
. So if /signup/
will get sent to this WSGI handler and will result in a 404. Instead of doing this, either add explicit paths in app.yaml
and a 404 handler in your catch-all in main.app
or add a 404 handler catch-all in each submodule.
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