Solved:
if form.accepts(request.vars, session, keepvalues=True,
onvalidation=WriteThumb):
.........
def WriteThumb(form):
i = cStringIO.StringIO()
o = cStringIO.StringIO()
i.write(form.vars.imgfile.value)
i.seek(0)
im = Image.open(i, 'r')
im.thumbnail((100,100),Image.ANTIALIAS)
im.save(o,'jpeg')
form.vars.thumbnail = base64.b64encode(o.getvalue())
o.close()
i.close()
<img src="data:image/jpeg;base64,{{=row['thumbnail']}}"
alt="Thumbnail photo" />
On 9 Ott, 14:48, leone <handja...@gmail.com> wrote:
> excuse me: onvalidation not onvalidate.
>
> On 9 Ott, 14:20, leone <handja...@gmail.com> wrote:
>
>
>
> > I have questions about SQLFORM onvalidate.
> > Before inserting a row I have to resize an image by PIL and push
> > b64encoded bytes on a blob field.
> > So I have defined onvalidate=DoSomething in SQLFORM.
> > DoSomething has form as input arg, resize image as thumbnails, encode
> > it and push in form.vars.myblob
> > (or db.mytable.myblob???).
> > The new record is OK, but blob field is empty.
> > Can someone orient me?
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