Kevin Horn wrote:
> yes, that makes sense
>
> Kevin Horn
>
> On 3/16/07, *Jim Steil* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
> wrote:
>
> Kevin Horn wrote:
>> Well, if validation fails, then program flow will go to your
>> @error_handler method (in this case, wholesaleMargin), so you
>> would need to look there to see what's happening. Does
>> wholesaleMargin() have a return value? It doesn't look like it
>> from your code...
>>
>> Of course, reading this:
>> http://docs.turbogears.org/1.0/ValidateDecorator ...
>> "When the arguments, for whatever reason, fail validation, you
>> will receive no values for the failing arguments."
>>
>> So it seems that what I suggested earlier isn't going to work in
>> any case. My guess is that validation is failing somehow, and
>> that's causing some of your arguments to not have a value, which
>> is messing up your PDF generation somehow. Or something.
>>
>> Where is the error message coming from? Figuring out where that
>> is being generated would go a long ways towards diagnosing your
>> problem.
>>
>> Kevin Horn
>>
>> On 3/15/07, * Jim Steil* <[EMAIL PROTECTED]
>> <mailto:[EMAIL PROTECTED]>> wrote:
>>
>> 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
>>>
>>> <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.
>>
>>
>>
>>
> The error message that I'm receiving is coming from the Adobe
> Acrobat PDF reader. I'm assuming that is because of the
> @tg.expose(content_type="application/pdf"). Could it be that it
> is redirecting me to the error_handler but the content type is
> trying to render it as a PDF?
>
> -Jim
>
>
>
>
>
> >
I've tried the following:
@tg.expose(content_type='text/html', template='motion.templates.edit')
def wholesaleMargin(self, *args, **kw):
... on there error_handler method, but I'm still getting the same
problem. Has anyone else gotten validate/error_handler to work on a
method where the content type was other than text/html?
-Jim
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