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How do I serve a dynamically generated image in Django?
I have an html tag
<html> ... <img src="images/dynamic_chart.png" /> ... </html> linked up to this request handler, which creates an in-memory image
def chart(request): img = Image.new("RGB", (300,300), "#FFFFFF") data = [(i,randint(100,200)) for i in range(0,300,10)] draw = ImageDraw.Draw(img) draw.polygon(data, fill="#000000") # now what? return HttpResponse(output) I also plan to change the requests to AJAX, and add some sort of caching mechanism, but my understanding is that wouldn't affect this part of the solution.
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I assume you're using PIL (Python Imaging Library). You need to replace your last line with (for example, if you want to serve a PNG image):
response = HttpResponse(mimetype="image/png") img.save(response, "PNG") return response See here for more information.
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