Leonardo Rochael wrote:
Hi Héctor
Héctor Velarde wrote:
...
I was wondering if there is a way to modify the marshaling of ATImage
content type in order to allow it to read the IPTC record embedded in
the image to create automatically the image with title and description
mapping the headline and caption fields.
we have been using a Python library called IPTCInfo to read and write
information inside JPG images successfully.
I would suggest you create a new product with a new ATImage subclass,
wherein you override the setImage() mutator to call the original one and
then use IPTCInfo to also set the other attributes. Then you need to change
the mimetypes registry to point to your type instead of ATImage.
Alternatively, you could either monkeypatch the ATImage .setImage() (which
is ugly but works when in a hurry) or listen to ObjectModifiedEvents for
ATImages and set the other attributes with the IPTC information.
the third of these choices seems preferable, IMO. it would also be possible
to define a new marker interface (IIPTCImage, possibly) and declare this to be
implemented by the ATImage class via ZCML. you could define adapters, listen
to events, and declare new views based on the marker interfaces. and you
could re-use the same marker interface for news items, or anything else that
may have an ImageField, w/o needing to subclass from ATImage.
-r
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