[Zope] filtering results

[gf]

On 4/7/06, Dieter Maurer <dieter at handshake.de> wrote:
> gf wrote at 2006-4-6 12:06 -0600:
> >Hi,
> >I am a Zope newbie. I apologize if the terminology I use below is not
> >correct, but I hope that you get the gist of what I am about to ask.
> >
> >I would like to be able to 'filter' results before returning them to
> >the user.  In other words, if a user requests a given object, it is
> >passed through a filter before being passed on to him or her. As a
> >simple example, I may want to tidy the html before the user sees it,
> >or eliminate or add certain tags or words.
> >
> >I have put together a simple 'html tidy' external method that takes
> >raw html and produces a tidied version, but I don't know how I can
> >apply it.
>
> The current Zope version does not support general post processing.
>
>
> Depending on your precise use cases, you have various options:
>
>  *  change "ZPublisher.HTTPResponse.HTTPResponse" to
>     perform postprocessing it its "setBody".
>
>  *  change "ZPublisher.Publish.publish_module" to add
>     post processing
>
>  *  use a PythonScript and its "traverse_subpath" feature.
>
>     When traversal reaches a PythonScript, then traversal
>     stops and the remaining traversal steps are
>     made available in the scripts "traverse_subpath".
>
>     The script can try to locate the object identified
>     by the "traverse_subpath" and call it.
>     It then can perform post processing on the result.
>
>     This usually works for templates and parameterless scripts.
>     Passing parameters to scripts is difficult.
>     You probably would like to make "ZPublisher.mapply.mapply"
>     available in untrusted code for this.
>
>     The approach will also fail when the user can only be authenticated
>     below the script.
> --
> Dieter
>

Hi Dieter,
Thank you for the ideas!
I will check into them and see if I can make anything work for my application.

Best Regards,
gyro