Fala Marcelo,
no arquivo Archetypes/Field.py você encontra o seguinte:
class ImageField(FileField):
""" implements an image attribute. it stores
it's data in an image sub-object
sizes is an dictionary containing the sizes to
scale the image to. PIL is required for that.
Format:
sizes={'mini': (50,50),
'normal' : (100,100), ... }
syntax: {'name': (width,height), ... }
the scaled versions can then be accessed as
object/<imagename>_<scalename>
e.g. object/image_mini
where <imagename> is the fieldname and <scalename>
is the name from the dictionary
original_size -- this parameter gives the size in (w,h)
to which the original image will be scaled. If it's None,
then no scaling will take place.
This is important if you don't want to store megabytes of
imagedata if you only need a max. of 100x100 ;-)
max_size -- similar to max_size but if it's given then the image
is checked to be no bigger than any of the given values
of width or height.
example:
ImageField('image',
original_size=(600,600),
sizes={ 'mini' : (80,80),
'normal' : (200,200),
'big' : (300,300),
'maxi' : (500,500)})
will create an attribute called "image"
with the sizes mini, normal, big, maxi as given
and a original sized image of max 600x600.
This will be accessible as
object/image
and the sizes as
object/image_mini
object/image_normal
object/image_big
object/image_maxi
the official API to get tag (in a pagetemplate) is
obj.getField('image').tag(obj, scale='mini')
...
sizes may be the name of a method in the instance or a callable
which
returns a dict.
Don't remove scales once they exist! Instead of removing a scale
from the list of sizes you should set the size to (0,0). Thus
removeScales method is able to find the scales to delete the
data.
Scaling will only be available if PIL is installed!
If 'DELETE_IMAGE' will be given as value, then all the images
will be deleted (None is understood as no-op)
"""
Ou seja, se seu campo se chama image e sua escala banner, basta chamar
contexto_objeto/image_banner e você tem a imagem redimensionada.
A única exigência aqui é a PIL, naturalmente.
Revisa suas definições e se der problema, mande detalhes ;)
Abraços.
2009/7/11 Marcello Bontempo Salgueiro <
[hidden email]>
>
>
> Salve a todos!
>
> Galera estou com uma pequena duvida, fiz um produdo de portifolio que
> tem duas classes, uma chamada Portifolio e outra Imagem e na classe
> imagem eu tenho um atributo do tipo image e coloquei um valuetag sizes
> com o valor {'ver':(500,400),'thumb':(58,58)} só que
> montei minha pagetemplate assim:
>
> $objeto/getURL/Imagem_ver
>
> ele não redimensiona a imagem para 500,400 alguem pode da uma forca!?
>
> []s
>
> Marcello.
>
>
>
--
--
Rodrigo Castardo
Liberiun
COO
[hidden email]
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