Hello List,

first, many thanks for the very fast and polite answer. I already know the Zope-Book for many years, but I did not find a solution there, for my special problem.

Perhaps I have to give a little bit more context to you. I tried to make the code-excerpt short - perhaps too short.

The object doc has nothing to do directly with uploading the file. In this object is some further information. And to do things in a handy way, I need that further information (doc) in the method, called after submitting the form (addUploadFile).

Is there a solution for that available?

Again, many thanks in advance,

Andreas Jung wrote:

--On 4. April 2008 09:05:59 +0200 Ulla Theiss <[EMAIL PROTECTED]> wrote:

Hello List,

I have to pass an instance of a self-defined class within a form to a
product method.
I try it in the following way:

<form action="addUploadFile" enctype="multipart/form-data" target="main"
<input name="doc:instance" value="<dtml-var doc>" type="hidden">


Please don't invent new syntax or new APIs...or don't expect that stuff
like this would work because you dream of it :-)

And of course you can not *pass* instances in some way through HTTP.
This makes totally no sense.

No idea what your intention is with your code. If you specify
'addUploadFile' then this method will be called within the context
of your current object. If you need to call the method within the context
of an other object, specify the URL of the related object within 'action'.
If you need reference another object as part of your form-data: specifiy
its *path* but passing the object directly to value=".." really makes no sense. Obtain an object-by-path within your code using the restrictedTraverse() API. But for uploading data to your current context object you don't have to define something like "doc"... please refer to the "Zope Book 2.7 edition" - appearently you have a basic misunderstanding how Zope works here.



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