multipart response possible with Rack?

multipart response possible with Rack?

[Michael Franzl]

I would like to generate a multipart HTTP response to a conventional 
GET request. For the end user, this will display a web page and 
download a file simultaneously. The response should look like the 
example below.

Can I do this with Rack?

Thanks,
Michael

     HTTP/1.1 200/OK
     Content-type: multipart/mixed; boundary=xyz
     Content-Description: multipart-1

     --xyz
     Content-Type: text/plain
     Content-Disposition: inline
     Content-Description: text-part-1

     Some text goes here.

     --xyz
     Content-Type: application/vnd.print
     Content-Disposition: inline; filename=invoice.bon
     Content-Description: invoice-part-2

     This is text inside of a file.
     --xyz--


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Re: multipart response possible with Rack?

[Konstantin Haase]

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On Apr 19, 2010, at 11:05 , Michael Franzl wrote:

> I would like to generate a multipart HTTP response to a conventional GET request. For the end user, this will display a web page and download a file simultaneously. The response should look like the example below.
> 
> Can I do this with Rack?

I don't think there is a middleware or some sort of helper right now.
You could try something like this: http://gist.github.com/372122

By the way: Do browsers support that?

Konstantin

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Re: multipart response possible with Rack?

[Michael Franzl]

Konstantin Haase wrote:
> I don't think there is a middleware or some sort of helper right now.
> You could try something like this: http://gist.github.com/372122

Thanks for the hint. So I could write a custom Rack middleware to 
support that? And I could access this middleware from Rails? Is this 
more or less easy to do? Sorry, I am a newcomer to Rack, but I am be 
ready to learn it.

> By the way: Do browsers support that?

I tried it, Firefox does. When I remember correctly, IE doesn't.

Michael



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Re: multipart response possible with Rack?

[Konstantin Haase]

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On Apr 20, 2010, at 09:00 , Michael Franzl wrote:

> Konstantin Haase wrote:
>> I don't think there is a middleware or some sort of helper right now.
>> You could try something like this: http://gist.github.com/372122
> 
> Thanks for the hint. So I could write a custom Rack middleware to support that? And I could access this middleware from Rails? Is this more or less easy to do? Sorry, I am a newcomer to Rack, but I am be ready to learn it.
I think doing this as a middleware would be possible without violating the rack spec (but abusing it). Dunno how to integrate that in Rails.

Konstantin
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