I'm trying to build a simple blog using GAE and I've made the following code (I've deleted the parts which are not related to this question) :
# LOADING THE TEMPLATE INTO THE JINJA ENVIRONMENT
template_dir = os.path.join(os.path.dirname(__file__), 'templates')
jinja_env = jinja2.Environment(loader = jinja2.FileSystemLoader(template_dir), autoescape = True)
# HELPER FUNCTION
def render_str(template, **params):
t = jinja_env.get_template(template)
return t.render(params)
# GOOGLE DATASTORE DATABASE
class Entries(db.Model):
title = db.StringProperty(required = True)
body = db.TextProperty(required = True)
created = db.DateTimeProperty(auto_now_add = True)
# HANDLER FUNCTIONS
class SignUp(webapp2.RequestHandler):
def get(self):
self.response.write(render_str('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['error_username'] = "That's not a valid username."
have_error = True
if not valid_password(password):
params['error_password'] = "That wasn't a valid password."
have_error = True
elif password != verify:
params['error_verify'] = "Your passwords didn't match."
have_error = True
if not valid_email(email):
params['error_email'] = "That's not a valid email."
have_error = True
pwhash = make_secure_val(password)
self.response.headers.add_header('Set-Cookie', 'uid: %s' % str(pwhash))
if have_error:
self.response.write(render_str('signup.html', **params))
else:
self.redirect('/welcome')
class Welcome(webapp2.RequestHandler):
def get(self):
self.response.write(render_str('welcome.html'))
# APP HANDLERS
app = webapp2.WSGIApplication([('/', MainPage),
('/newpost', NewPost),
('/newpost/(d+)', Permalink),
('/signup', SignUp),
('/welcome', Welcome)
], debug=True)
signup.html
is a just simple form that takes in the username
, password
, password
again to verify and an optional email
.
make_secure_val()
is just a hashing function that returns an HMAC
hashed version of the argument string in the format argument|HMAC(argument)
.
So, here's my question: Once the user signs up, I want a redirect to another URL /welcome
, thus making me use the redirect()
function. But I also want to print the username
the user inputted into the form on the welcome page. The only way I know how to pass variables in a redirect()
is to pass into the URL through GET
. But I don't want the URL to display the username. I want to pass it as a template variable like in render_str()
. But if I use render_str()
in the POST
method of SignUp
, the URL will still be /signup
.
How do I pass in the data to a redirect()
?
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