I do not understand exactly what the code does, but here is what I would try: 1. Don't use GET use a POST 2. Use a binary post see: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Sending_and_Receiving_Binary_Data 3. use binary strings in javascript 4. use a bjson library
2013/10/12 Ruud Schroen <[email protected]> > > Hi. I posted a topic earlier about html2canvas to db. Now i got a new > issue so i figured i'd start a new thread. > > html2canvas takes a screenshot of all the content inside a div and creates > a canvas which acts as the image. After that the canvas is converted to a > base64 code. I send this code a web2py function via JSON. When that is done > i want to decrypt the base64 string and upload the image to a db. > > This is my javascript and web2py code: > > <script type="text/javascript"> >> >> html2canvas(document.getElementById('wireframe'), { >> >> onrendered: function(canvas) { >> >> var url = >>> '{{=URL(f="update",args=request.args,vars=request.vars)}}'; >> >> var data = canvas.toDataURL("image/png"); >> >> $.ajax({ >> >> url: url, >> >> type: "GET", >> >> data: {'data':data}, >> >> datatype: 'json', >> >> success: function (html) { >> >> $('#results').html(html); >> >> } >> >> }); >> >> return false; >> >> } >> >> }); >> >> </script> >> >> > def update(): > > from io import BytesIO > > from PIL import Image > > import base64 > > image = request.vars.data[request.vars.data.find(",")+1:] > > im = Image.open(BytesIO(base64.b64decode(image))) > > return db.wireframe.insert(screenshot=image) > > > The base64 code reaches the function, but when i insert the decrypted code > into the db, it says "Cannot handle upload". What am i doing wrong? > > This is an example of the file path WITHOUT the decryption (taken from > succeeded db insert): > > > http://localhost: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 > > -- > Resources: > - http://web2py.com > - http://web2py.com/book (Documentation) > - http://github.com/web2py/web2py (Source code) > - https://code.google.com/p/web2py/issues/list (Report Issues) > --- > You received this message because you are subscribed to the Google Groups > "web2py-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
