Re: dynamically creating/setting properties, Was: setting scaled image troubles

Hi Diez,

I don't know if we're talking about the same task but you can easiliy  
use any form field (i.e. input, select etc.) by using  
REQUEST.get('myfield') instead of getObjProperty.

Please give a better explanation of what you're trying to do.

Yours sincerely
Sebastian Tänzer

tänzermedien e.K.
concept / design / coding

c/o amcm GmbH
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Am 15.02.2009 um 20:14 schrieb Diez B. Roggisch:

> Hi,
>
> >
> > As far as I understand you're trying to create the thumbnail  
> within a
> > python script. You don't have to.
> > Inside your content object create a method (method, not DTML- 
> Method!)
> > "onChangeObjEvt" with the following code:
> >
> > <dtml-call "setObjProperty('img',
> > createThumbnail
> > (img
> > =
> > getObjProperty
> > ('imghighres
> > ',REQUEST
> > ),maxdim
> > =
> > getObjProperty
> > ('thumbwidth
> > ',REQUEST),qual=getObjProperty('thumbquality',REQUEST)),lang)">
> >
> > This one replaces the "img" field (type: image) with a thumbnail  
> from
> > the image from the imghighres and takes the properties for maxdim  
> and
> > quality (jpeg quality) from the string fields thumbwidth and
> > thumbquality.
> > If you want to just resize the existing image inside field "img"
> > replace imghighres with img.
> >
> > Without using different fields:
> >
> > <dtml-call "setObjProperty('img',
> > createThumbnail
> > (img=getObjProperty('imghighres',REQUEST),maxdim=20,qual=95),lang)">
>
> Thanks, this works - but not quite the way I wanted it to be :)
>
> The problem is that the setObjProperty call only accepts names that  
> are
> already defined in the system.
>
> So, if I wanted the image to be scaled based on some select-box in the
> editing interface, I have to create an image-property for each  
> offered size.
>
> This works, and if there is no other solution, I'll stick with it.
>
> However, I wonder if there is a way of adding a hitherto unknown  
> property?
>
> Thanks,
>
> Diez
>
>