From: Kirk Haines <khaines@...>
Date: 2004-09-02T19:39:56+09:00
Subject: Re: IOWA -- another newbie question

On Thu, 2 Sep 2004 12:15:21 +0900, Mark Probert wrote
> What is the best way of implemting a "Save file" button in IOWA?
> 
> I have a form of data that I generate and I want to save it to the 
> client's machine.  Copy and paste, or "Save" from the browser are 
> not really what I am after here, rather a file transfer kind of option.

Hmmm.  Disclaimer:  I haven't had enough sleep.  :)

Here's my initial inclination:

-----

<input type="submit" value="Save File" oid="saveFile">

-----

def saveFile
  newPage = pageNamed('MyFormData')
  newPage.attribute1 = @attribute1
  newPage.attribute2 = @attribute2
  #
  # And so on, setting whatever you need to generate the data that
  # you want to save.
  #
  yield newPage
end
-----

Now, you have a MyFormData.html and a MyFormData.iwa.  Do it just like you 
would a regular web component, except, of course, this component is intended 
to be saved by the browser.  You are creating your downloaded file, here.

In MyFormData.iwa:

def setup
  req = session.context.request
  # Set an appropriate content type.
  req.content_type = 'application/octet-stream'
  # And set your filename.
  req.headers_out['Content-Disposition'] = 'attachment; filename="my.dat"'
end


Your browser should simply download whatever MyFormData generates, now.  I 
am doing something similar in a few apps in order to generate downloaded CSV 
dumps of report contents.


Hope that helps,

Kirk Haines