[Zope] setting precondition.

[sanjeev c s]

hello,
> in my webpage,i want user to download a zip file. 
> this is the code
> 
> <a href="folder1/<dtml-var e_name>"><dtml-var iname>
> </a>
> 
> variable e_name contains the zip file with a id and
a
> title.
> now when i click on iname it opens the download
> dialogue box. i say save to disk. 
> now id of the variable e_name becomes the default
file
> name(in the save as  box). 
> can i make the title of e_name as a default name
> (in the save as box)?? how ??
> Please help.

This is not straightforward for a file, and esp. not a
zope thing/problem.
By default, the browser uses the tail of a URI to
construct the filename 
for saving.

Additionally, most browser honor a http-header which
looks like

Content-Disposition: attachment;
filename="filename.ext"

which would cause the "save as" box to display
"filename.ext" as 
filename. Now we need to get zope to return this
header for an object of 
type file.

Fortunately, a file has a property called
"precondition".
We use that to call a python script to set the right
header.

So put the following line in a python script above
your files in the 
hierachy:

context.REQUEST.RESPONSE.setHeader('Content-Disposition','attachment;

filename=' + context.title)

call it "setheader"

and use setheader as precondition for your files.

cheers,
oliver

-------------------------------------------------------
where can i find information about setting
precondition for files ?? i tried to search on the
zope.org but its useless.

Thanks,
Sanju.







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