#!/usr/bin/python """ Example TAL based CGI Copyright (c) 2004 Colin Stewart (http://www.owlfish.com/) All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. If you make any bug fixes or feature enhancements please let me know! A demonstration of how TAL/TALES can be used from a cgi program. Quick instructions: 1 - Copy this file and the two templates ("fields.html" and "results.html") to the cgi-bin directory on your webserver 2 - Ensure that simpleTAL, simpleTALES and DummyLogger are installed in your site-packages directory 3 - Go to http://servername/cgi-bin/simple-cgi.py Module Dependencies: simpleTAL, simpleTALES """ from simpletal import simpleTAL, simpleTALES import cgi, sys class ExampleCGI: def __init__ (self): self.missingFields = {} self.fieldValues = {} self.form = cgi.FieldStorage() self.formValid = 1 self.context = simpleTALES.Context() def buildContext (self, title): self.context.addGlobal ("missingFields", self.missingFields) self.context.addGlobal ("fieldValues", self.fieldValues) self.context.addGlobal ("title", title) def getValue (self, name, mandatory=1): if (self.form.has_key (name)): self.fieldValues [name] = self.form [name].value elif (mandatory): self.missingFields [name] = 1 self.formValid = 0 def main (self): if (self.form.has_key ("submit")): # Recieved the posting, get the name, occupation, and (optional) age self.getValue ("username") self.getValue ("occupation") self.getValue ("age", mandatory=0) if (self.formValid): # Valid form, show the results self.buildContext ("Valid Results") self.expandTemplate ("results.html") else: self.buildContext ("Missing fields") self.expandTemplate ("fields.html") else: self.buildContext ("Enter data") self.expandTemplate ("fields.html") def expandTemplate (self, templateName): # Print out the headers sys.stdout.write ("Content-Type: text/html\n") # HTML is following sys.stdout.write ("\n") # blank line, end of headers # Expand the template and print it out templateFile = open (templateName, 'r') template = simpleTAL.compileHTMLTemplate (templateFile) # Close the template file templateFile.close() # Expand the template as HTML using this context template.expand (self.context, sys.stdout) sys.exit (0) # Entry point for the cgi cgiInstance = ExampleCGI() cgiInstance.main()