I am writing a product that returns an image generated by pil (unfortunately it doesn't):

Create image-

im = PIL.Image.new('RGB',(width,height))

it is then drawn-

draw = ImageDraw.Draw(im)

draw.rectangle([0,0,width,height], fill=(250,250,250)) etc etc etc

after it is ready to be sent out I "save" it -

pic = cStringIO.StringIO()
im.save(pic, 'GIF')

and send it

 pic.seek(0)
 RESPONSE.setHeader("Content-type", "image/gif")
 RESPONSE.write(pic.read())

my index_html

<dtml-var standard_html_header>
<IMG src="./dynamicImage?RESPONSE=RESPONSE">
<dtml-var standard_html_footer>

the product class inherits Item, Persistent and Implicit

the dynamicImage method has an argument RESPONSE

When I click on view all I get is an image placeholder box (true as well when using the same image tag in a dtml method in the root folder), however from a dtml method in the root folder <dtml-var expr="TestObject.dynamicImage(RESPONSE)"> will render an image as the only content. any other content in the method is ignored.

This is my first attempt at a product, so after much hair pulling I must get it to work.

Thank you in advance for any help

Sean K