#!/usr/bin/env python ''' $Id: friends3.py,v 1.1 2000/12/31 01:32:45 wesc Exp $ Friends CGI demo ''' import cgi from urllib import quote_plus from string import capwords #from sys import stderr #s = stderr.write header = 'Content-Type: text/html\n\n' url = 'http://localhost/cgi-bin/friends3.py' errhtml = '''Friends CGI Demo

ERROR

%s

''' # showError() --> None def showError(error_str): 'showError() -- display error message' print header + errhtml % (error_str) friendradio = ' %s\n' formhtml = '''Friends CGI Demo

Friends list for: %s

Your Name:

How many friends do you have? %s

''' # showForm() --> None def showForm(who, howmany): 'showForm() -- presents blank or data-filled form for new input' friends = '' for i in [0, 10, 25, 50, 100]: checked = '' if str(i) == howmany: checked = 'CHECKED' friends = friends + friendradio % (str(i), checked, str(i)) print header + formhtml % (who, url, who, friends) reshtml = '''Friends CGI Demo

Friends list for: %s

Your name is: %s

You have %s friends.

Click here to edit your data again. ''' # doResults() --> None def doResults(who, howmany): 'doResults() -- displays results with given form data' # substitute in real name and number of friends and return newurl = url + '?action=reedit&person=%s&howmany=%s' % (quote_plus(who), howmany) print header + reshtml % (who, who, howmany, newurl) # process() --> None def process(): 'process() does all the work: grabs user data and determines routine to call' error = '' # initialize Data class object form = cgi.FieldStorage() #s('name: '+str(form.name)+'\n') #s('keys: '+str(form.keys())+'\n') #for i in form.keys(): #s('item: '+str(form[i].name)+' has a value of '+str(form[i].value)+' and is a ' + form[i].__class__.__name__ + '\n') # get user name if form.has_key('person'): who = capwords(form['person'].value) else: who = 'NEW USER' # get name and number of friends if form.has_key('howmany'): howmany = form['howmany'].value else: if form.has_key('action') and form['action'].value == 'edit': error = 'Please select the number of friends you have.' else: howmany = 0 # no errors, either display form or present results if not error: # if editing the first time, show results if form.has_key('action') and form['action'].value != 'reedit': doResults(who, howmany) # otherwise, show form else: showForm(who, howmany) # send error message back if error situation else: showError(error) # invoke if called directly if __name__ == '__main__': process()