Michel Pottier wrote:

Le jeu 16/10/2003 à 12:57, Alexis Roda a écrit :

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Do you mean that with something like

<dtml-var std_header>

here i have some initialisation of parameters

...

<dtml-var creGrapth> <dtml-var std_footer>

you only get the image?

yes! In fact it replaces the whole html page with the jpeg image (when i view the html source i have only the jpeg file)

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I'm a bit lost. You have a form, the user submits some data to creGraph which paints something (depending on the submited data) that is returned to the user within an HTML page. Right?

submits some data to a dtml method where, among other action i call creGraph (which is an external method, but with script this is the same). And i get only the result of creGraph (the image)

I think the problem is in creGraph, with the REQUET.RESPONSE.setHeader('Content-Type', 'image/jpeg') If you call creGraph from the dtml method you're modifying the content-type for the whole HTML page. This will only work if you do something like: <dtml-var header> <img src="creGraph?param=value"> <dtml-var footer> since the image will be retrieved by itself on a separate HTTP request.

Thank you for the explanation, i will try that.

try this instead, is the same in python: python script: creGraphParams parameters: REQUEST param_names=['foo', 'bar'] cgurl = '' count = 0 for p in param_names : if count > 0 : cgurl = cgurl + '&' cgurl = cgurl + p + '=' + REQUEST.form[p] count = count + 1 # if there are no errors should return # something like foo=1&bar=25 return cgurl # end of script in the dtml <img src="creGraph?<dtml-var creGraphParams>">

Yesterday evening, in place of returning my image from the external method, i return only the name of an "external file". So i have

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img src=link_to_python_script_which_return_name_of_external_file>

in python_script_which_return_name_of_external_file * I run the external method * I get the name of the file * I add this file as external file * And now, i have only to solve the problem of removing this file (i think a cron will be used)

try Xron, a zope product.

in external method, i create my image, i put it in a specific directory, i return the name of the file

img src=creGraph?parameters is simpler (you don't have to bother about deleting temporary files, lifetime etc.) but slower, since the image will be generated for every request. HTH -- //// (@ @) ---------------------------oOO----(_)----OOo------------------------ Los pecados de los tres mundos desapareceran conmigo. Alexis Roda - Universitat Rovira i Virgili - Reus, Tarragona (Spain) --------------------------------------------------------------------