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Yandle, Hans
Hans.Yandle at cingular.com
Thu May 22 17:55:14 EST 2003
Well, I decided to make a working sample out of your code so here is my working version. Use at will. By no means is this perfect but it does work for me. Example URL: http://localhost/test/sample/ProcessForm/?name=Hans&color=swallow === sample.py === from mod_python import apache import string ### File Parameter Options ### Template = "/usr/local/python/template.html" # filename of template file def EvalTemplate(Content): (Result, ErrorMsg) = (None, None) try: TemplateFile = file(Template, "r") # open in read only mode TemplateData = TemplateFile.read() # read in the contents of the file TemplateFile.close() # close the file except IOError, e: ErrorMsg = "Error! Unable to read contents of template file %s. <br>%s" % (Template, e) except: ErrorMsg = "Error! Unknown error has occured." if not ErrorMsg: if string.find(TemplateData, "<!--*** INSERT CONTENT HERE ***-->") is not -1: Result = string.replace(TemplateData, "<!--*** INSERT CONTENT HERE ***-->", Content) else: ErrorMsg = "Invalid template file format. Missing insert comment tag. Please fix %s." % Template return (Result, ErrorMsg) def SendHTML(Output=None, ErrorMsg=None): if not ErrorMsg: s, ErrorMsg = EvalTemplate(Output) if ErrorMsg: s = """<html><head><title>Mod_Python Sample Using a Template: Error Message</title></head> <body><p>An error has occured. Please correct the problem.</p> <pre>%s</pre></body></html>""" % ErrorMsg return s def ProcessForm(req, name=None, email=None, color=None, comment=None): ErrorMsg = None Output = "Hello, " if name: if email: Output = Output + "<a href=mailto:%s>%s</a>.<p>" % (email, name) else: Output = Output + "%s.<p>" % name else: ErrorMsg="You need to at least supply a name. Please go back." if color=="swallow": Output = Output + "You must be a Monte Python fan.<p>" elif color != None: Output = Output + "Your favorite color was %s<p>" % color else: Output = Output + "You cheated! You didn't specify a color!<p>" if comment: Output = Output + "In addition, you said: <br>%s<p>" % comment req.content_type = "text/html" req.send_http_header() return SendHTML(Output, ErrorMsg) === end === === template.html === <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> <html> <head> <META NAME="keywords" CONTENT="blah blah -- your ad here"> <title>Python is Fun!</title> </head> <body> <!--*** INSERT CONTENT HERE ***--> </body> </html> === end === Have fun, Hans -----Original Message----- From: Gregory (Grisha) Trubetskoy [mailto:grisha at modpython.org] Sent: Thursday, May 22, 2003 3:11 PM To: Terry MacDonald Cc: mod_python at modpython.org Subject: Re: [mod_python] Tutorials, FieldStorage and sys.py. A depressing saga. Terry - Thanks for your compliments. You didn't specify what's in your apache config, so it's hard to tell what's going on there. My recommendation would be to reserve an hour or so and read the tutorial carefully. One of the things that caught my eye was the ".value" attribute you're using - the mod_python version of FieldStorage does not require it. But more likely than not you just need to use the publisher handler, in which case you wouldn't need to concern yourself with FieldStorage at all, and your ProcessForm function would look something like: def ProcessForm(req, name="", email="", color="", comment=""): if not name: return "Name is required" ... etc ... return SubResult[0] Note that print statements are useless in mod_python, also your URL is lower case, but function names are mixed-case - since Python is case-sensitive, that would cause a problem. HTH. Grisha On 22 May 2003, Terry MacDonald wrote: > Hi again, > > Thankyou very much for your replies, You seem a nice bunch in here. > I look forward to conversing with you over time (hopefully not all bug related!) > > Anyways your advice solved one issue but unfortunately moved me on to the next. > I am reaching the end of my patience as I have tried various work arounds to my > ills and I just go up more garden paths to more problems (this should not be that > difficult I know!). > > Forgive me but I have decided to post the code to see if you can tell what is wrong > cos I just can't get it to work as it is supposed to. The code is primarily example > code but has been rejigged a little while trying to get it to work. > > Problems occuring now is that the subn function is giving a mulitple repeat error. > When I comment out the offending code I just get Object not found in the browser. > Also I have to put full pathnames in for the html files otherwise they cannot be > found (I know this can't be right - but i'm trying anything to get this to work) > > Ultimately the example should print a form, fetch the contents and display them > back to you in another page (I think!) not exactly rocket science. > > Below is the .py file and the two basic html files. Enjoy ! > > Cheers > > Terry > > ============================================================================ ==== > #!/usr/bin/python > > from mod_python import apache > from mod_python import util > import re > > # specify the filename of the template file > TemplateFile = "/var/www/html/python/template.html" > > # Display takes one parameter - a string to Display > def Display(Content): > TemplateHandle = open(TemplateFile, "r") # open in read only mode > # read the entire file as a string > TemplateInput = TemplateHandle.read() > TemplateHandle.close() # close the file > > # this defines an exception string in case our > # template file is messed up > BadTemplateException = "There was a problem with the HTML template." > > SubResult = re.subn( "<!-- *** INSERT CONTENT HERE *** -->", Content, TemplateInput ) > if SubResult[1] == 0: > raise BadTemplateException > > print "Content-Type: text/html\n\n" > print SubResult[0] > > > def ProcessForm(req): > > form = util.FieldStorage(req) > > # extract the information from the form in easily digestible format > try: > name = form["name"].value > except: > # name is required, so output an error if > # not given and exit script > Display("You need to at least supply a name. Please go back.") > raise SystemExit > try: > email = form["email"].value > except: > email = None > try: > color = form["color"].value > except: > color = None > try: > comment = form["comment"].value > except: > comment = None > > Output = "" # our output buffer, empty at first > > Output = Output + "Hello, " > > if email != None: > Output = Output + "<A HREF=mailto:" + email + ">" + name + "</A>.<P>" > else: > Output = Output + name + ".<P>" > > if color == "swallow": > Output = Output + "You must be a Monty Python fan.<P>" > elif color != None: > Output = Output + "Your favorite color was " + color + "<P>" > else: > Output = Output + "You cheated! You didn't specify a color!<P>" > > if comment != None: > Output = Output + "In addition, you said:<BR>" + comment + "<P>" > > Display(Output) > > ### > ### Begin actual script > ### > > #### "key" is a hidden form element with an > ### action command such as "process" > #try: > # key = form["key"].value > # key = form["key"].value > ##except: > # key = None > > #if key == "process": > # ProcessForm(form) > #else: > # DisplayForm() > > # Open and display the form > FormFile = "/var/www/html/python/form2.html" > FormHandle = open(FormFile, "r") > FormInput = FormHandle.read() > FormHandle.close() > Display(FormInput) > > ============================================================================ =========== > > Form2.html......... > > <FORM METHOD="POST" ACTION="sample.py/processform"> > <INPUT TYPE=HIDDEN NAME="key" VALUE="process"> > Your name:<BR> > <INPUT TYPE=TEXT NAME="name" size=60> > <BR> > Email: (optional)<BR> > <INPUT TYPE=TEXT NAME="email" size=60> > <BR> > Favorite Color:<BR> > <INPUT TYPE=RADIO NAME="color" VALUE="blue" CHECKED>Blue > <INPUT TYPE=RADIO NAME="color" VALUE="yellow">No, Yellow... > <INPUT TYPE=RADIO NAME="color" VALUE="swallow">What do you mean, an African or European swallow? > <P> > Comments:<BR> > <TEXTAREA NAME="comment" ROWS=8 COLS=60> > </TEXTAREA> > <P> > <INPUT TYPE="SUBMIT" VALUE="Okay"> > </FORM> > ============================================================================ =========== > Template.html........ > > <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> > <html> > <head> > <META NAME="keywords" CONTENT="blah blah -- your ad here"> > <title>Python is Fun!</title> > </head> > <body> > <!-- *** INSERT CONTENT HERE *** --> > </body> > </html> > > > > _______________________________________________ > Mod_python mailing list > Mod_python at modpython.org > http://mailman.modpython.org/mailman/listinfo/mod_python > _______________________________________________ Mod_python mailing list Mod_python at modpython.org http://mailman.modpython.org/mailman/listinfo/mod_python -------------- next part -------------- An HTML attachment was scrubbed... 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