[Borges-users] Dynamically creating images with Borges

[Слепнев Владимир]

>> data = File.open('plasm.jpg') {|f| f.binmode; f.read} # we have some binary data
>> r.image r.url_for_document(data,"image/jpeg") # we make the image's URL point to this data, with a mime-type
>
>Hm, this way the image is the same for all sessions, isn't it? And the
>URL will not be reclaimed (it will stay forever).

Instead of opening a file, you can fill 'data' with binary data for 
the image in some other way. (Capture the output from an SVG renderer, 
for example.) The image will be different between different calls to 
Controller#render_on (i.e. between different page renders). You can 
use some session-specific data to build the image from it, etc. Isn't 
this what you want? (This way, you don't really need the proc - you 
generate the image data when the page loads, and store it for later 
retrieval with #url_for_document.)

The reclaiming part is more tricky, but I'm pretty sure Borges can be 
made to expire this properly. If it doesn't do this now (which I'm not 
sure of), this will be pretty easy to put in once we have a decent 
unit testing framework.

Vladimir Slepnev

P.S. Eric, if I'm wrong in answering questions, correct me, OK?