[Zope] Displaying Graphs using TAL

[Andreas Jung]

--On 30. Mai 2008 12:38:21 +0530 Andyy <ggirotra at gmail.com> wrote:

> i am preparing graphs(MatPlotLib) related files using external methods.,
> when i test them on zope they display very well there.
>
> But when i call these external methods using tal as:
>
> <Img tal:attributes="src python: context.IterationBar(context) "/>
> where IterationBar is my external method that displays a BarChart.
>
> Or using
>
>  <img src="/Agile/image.gif"
>    tal:attributes="src context.IteartionBar(context)"/>

1) the thing you're calling must return an *URL*
   not the image data itself...think about how the <img>
   in HTML works

2) The script called through the given url must return the image
   data _and_ it must set the proper http headers content-type,
   and content-length

-aj
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