[Zope] ZPublishing

[Amos Latteier]

At 06:07 PM 9/29/99 +1000, you wrote:
>I am trying to send some dynamically generated binary data to the output
>buffer. How do I do it in python with Zope?
>
>As I understand it HTMLFile(xxxx) returns a dtml document object.  I
>could dump the data to file and then try to send it using the binary
>equivalent of the HTMLFile class. Is there such an animal? 
>
>I noticed there is the ImageFile class, but the guess_encoding module
>does not list the content type I need to publish. Is it a good idea to
>add mine there or can I override this?
>
>Isn't there anyway I could just write to the output buffer?

The normal case is to just create a file object and manually enter the
mime-type (called 'Content-type') in the edit form.

If you are generating different binary data with an external method, just
return it, and perhaps set some HTTP headers like so:

def myDynamicContent(self, RESPONSE):
  "return dynamic binary data"
  # generate data
  RESPONSE.setHeader('content-type', 'foo/bar') # or whatever
  return data

If you want to do this from DTML I think that you can use the return tag,
or use RESPONSE.write.

<dtml-call "RESPONSE.setHeader('content-type', 'foo/bar')">
<dtml-return data>

or 

<dtml-call "RESPONSE.setHeader('content-type', 'foo/bar')">
<dtml-call "RESPONSE.write(data)">

Hope this helps.

-Amos