[CPS-devel] Imagegallery

[Georges Racinet]

On Apr 13, 2007, at 3:02 PM, Michael Schulz wrote:

> Thanks,
>
> if I understand it right, your suggestion means:
>
> - create CPSImageWithThumbnailField(CPSImageField), with a
> computeDependantFields method, that takes the original imagefield
> data, uses PIL to create the thumbnail and write the new image to the
> thumbnail field.

Yes, make the name (or better, suffix) of the dependent field  
configurable through a property.
Check CPSFileField declaration (in CPSSchema/BasicFields.py)

>
> - change my Photo schema, to one CPSImageWithThumbnailField and one
> CPSImageField(?) or two CPSImageWithThumbnailFields

The first of these possiblities, where of course you name the  
thumbnail field according to what you
configured in the main one

>
> - what layout should i choose? since i still want to be able to use it
> TTW: change my layout, so that instead of using a photo widget I use a
> normal image widget and on each change of the image, the thumbnail
> field is updated thru the computedependantfields method?

I'm don't remember that well what PhotoWiget does. Anyway, you can use
your field with any Image oriented widget.

>
> - If i then use the remote controller or createFile it is sufficient
> to provide the image file in the doc_def, because again,
> computedependantFields would thumbnail...

Yes. More precisely, this happens at DataModel commit time.

>
> Did I get that right? Thanks, Michael

Seems so, yes !


>
>
> 2007/4/13, Georges Racinet <gracinet at nuxeo.com>:
>>
>> 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.
>>
>>
>> >
>> > --
>> > -----------------------------------------------------------
>> > Michael Schulz
>> > mschulz at webgis.de
>> >
>> > in medias res
>> > Gesellschaft für Informationstechnologie mbH
>> >
>> > In den Weihermatten 66
>> > 79108 Freiburg
>> >
>> > Tel  +49 (0)761 556959-5
>> > Fax +49 (0)761 556959-6
>> >
>> > http://www.webgis.de / http://www.zopecms.de
>> > -----------------------------------------------------------
>> > _______________________________________________
>> > cps-devel mailing list
>> > http://lists.nuxeo.com/mailman/listinfo/cps-devel
>> >
>>
>> ---------
>> Georges Racinet,   Nuxeo SAS
>> Open Source Enterprise Content Management (ECM)
>> Web: http://www.nuxeo.com/ and http://www.nuxeo.org/ - Tel: +33 1 40
>> 33 79 87
>>
>>
>>
>> _______________________________________________
>> cps-devel mailing list
>> http://lists.nuxeo.com/mailman/listinfo/cps-devel
>>
>
>
> -- 
> -----------------------------------------------------------
> Michael Schulz
> mschulz at webgis.de
>
> in medias res
> Gesellschaft für Informationstechnologie mbH
>
> In den Weihermatten 66
> 79108 Freiburg
>
> Tel  +49 (0)761 556959-5
> Fax +49 (0)761 556959-6
>
> http://www.webgis.de / http://www.zopecms.de
> -----------------------------------------------------------
>

---------
Georges Racinet,   Nuxeo SAS
Open Source Enterprise Content Management (ECM)
Web: http://www.nuxeo.com/ and http://www.nuxeo.org/ - Tel: +33 1 40  
33 79 87