Kevin Horn wrote: > Since it works fine without the validation, I would suspect that the > validation process is changing a variable in some way that screws up > the PDF rendering process. Try sending the output to a file (in > addition to rendering it to the browser) both with and without the > decorators, and compare the results. > > Also see if you can get the variables that are being handled by your > form, both with and without validation and compare those. > > Kevin Horn > > On 3/14/07, * Jim Steil* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > > Hi: > > I'm writing a function that generates a pdf and displays it to the > screen. Thanks to Timothy Freund for his tutorial on how to do this. > It can be found here: > > > http://achievewith.us/public/articles/2007/02/21/produce-pdf-pages-with-turbogears-cheetah-and-reportlab > > > However, I'm having a problem. In the section of code labeled > pdfdemo.controllers.Root.letters (), I'm trying to add the > validate and > error_handler decorators to validate some input I need for the report. > My code works fine without the decorators but fails with the > decorators. I'm using Windows and Firefox and here is the error I > get > when I try it: > > File does not begin with '%PDF-'. > > Here is the code in my controller: > > @tg.expose(content_type="application/pdf") > @tg.validate(form=qlfFields.wholesaleMarginWidget ) > @tg.error_handler(wholesaleMargin) > def wholesaleMarginReport(self, *args, **kw): > fromDate = kw['fromDate'] > toDate = kw['toDate'] > letters_file = StringIO.StringIO () > wm.wholesaleMargin(letters_file, fromDate, toDate) > pdf = letters_file.getvalue() > letters_file.close() > > return(pdf) > > This works fine if I remove the validate and error_handler > decorators. > Any ideas, clues on where I should be looking? > > -Jim > > > > > > > > The problem there is that I never even get into the code in the method. If I put a log.debug(kw) as the first line of the code, it never gets there. It is skipping over the entire method and returning nothing.
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