By CherryPy Team
It’s not uncommon that an application needs to follow the user’s activity for a while. The usual mechanism is to use a session identifier that is carried during the conversation between the user and your application.
import random
import string
import cherrypy
class StringGenerator(object):
@cherrypy.expose
def index(self):
return """<html>
<head></head>
<body>
<form method="get" action="generate">
<input type="text" value="8" name="length" />
<button type="submit">Give it now!</button>
</form>
</body>
</html>"""
@cherrypy.expose
def generate(self, length=8):
some_string = ''.join(random.sample(string.hexdigits, int(length)))
cherrypy.session['mystring'] = some_string
return some_string
@cherrypy.expose
def display(self):
return cherrypy.session['mystring']
if __name__ == '__main__':
conf = {
'/': {
'tools.sessions.on': True
}
}
cherrypy.quickstart(StringGenerator(), '/', conf)
In this example, we generate the string as in the previous tutorial but also store it in the current session. If you go to http://localhost:8080/, generate a random string, then go to http://localhost:8080/display, you will see the string you just generated.
The lines 30-34 show you how to enable the session support in your CherryPy application. By default, CherryPy will save sessions in the process’s memory. It supports more persistent backends as well.
