[CPS-devel] Imagegallery

[Georges Racinet]

On Apr 13, 2007, at 12:16 PM, Michael Schulz wrote:

> Hi,
>
> I am looking for a solution to the behaviour mentioned in this ticket
> about the imagegallery type: http://svn.nuxeo.org/trac/pub/ticket/693
>
> I thought a quick solution to this could be to create a new
> CPSDocumentType ("Photo"), that uses the photo widget, which can store
> the original image plus a generated thumbnail. The resizing and
> keeping original image data is done in ExtendedWidget and BasicWidget
> modules.
>
> After adding this Photo type to the allowed_content_types of the
> imagegallery, it is working for images that are uploaded thru the
> normal forms. But creating this type thru a zipfile upload is not
> working: the object is created, but the resizing and keeping of
> original data is not performed. Presumably because this functionality
> comes from the widget "machinery", that is not invoked through the
> process when uploading a zipfile (createFile.py).
>
> What would be the correct manner to create these objects by scripts?
> The same problem arises when trying to create this type through the
> remote controller.
>
> TIA, Michael

Hi

I think you'd want to use the computeDependantFields (sic) method of  
fields. So instead of
subclassing the Image widget, you could subclass the CPS ImageField,  
and have it take care of the
thumbnail. This should catch all these use cases. For example, I've  
done this to read ID3 tags from MP3 files.
In mainstream CPS, this is used to apply transforms, like converting  
pdf to text for indexing.


>
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---------
Georges Racinet,   Nuxeo SAS
Open Source Enterprise Content Management (ECM)
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