Solved thanks to
http://groups.google.com/group/django-users/browse_thread/thread/cae5c5a532a73b6d?pli=1
I was using image.resize instead of image.thumbnail. The second one
resize in place.
def save(self, **kwargs):
super(Foto, self).save(**kwargs)
path = self.image.path
i = Image.open(path)
i.thumbnail(800,600), Image.BILINEAR)
i.save(path)
Juanjo
2008/10/6 Juanjo Conti <[EMAIL PROTECTED]>:
> Thanks for your reply, but...
>
> Whats resized? It's not in my namespace.
>
> 2008/10/4 varikin <[EMAIL PROTECTED]>:
>>
>>
>>
>> On Oct 3, 4:18 pm, "Juanjo Conti" <[EMAIL PROTECTED]> wrote:
>>> Hi, I used to use a pre 1.0 svn version of Django. There I had this class:
>>>
>>> class Foto(models.Model):
>>> descripcion = models.CharField(max_length=30, blank=True,
>>> verbose_name=u"descripción")
>>> imagen = models.ImageField(upload_to='imagenes', verbose_name=u"foto")
>>> inmueble = models.ForeignKey(Inmueble)
>>>
>>> ....
>>>
>>> def _save_FIELD_file(self, field, filename, raw_contents, save=True):
>>> '''
>>> Se reescribe el metodo de la clase padre para definir el
>>> nombre de archivo con
>>> el que se guardará la imagen en el sistema de archivos. Se
>>> utilizan enteros crecientes.
>>> '''
>>> if TESTING:
>>> field.upload_to = 'tests_dest'
>>> filename = Foto._cambio_de_nombre(filename)
>>> raw_contents = Foto._ajustar_tamanio(raw_contents)
>>> super(Foto, self)._save_FIELD_file(field, filename, raw_contents,
>>> save)
>>>
>>> The _save_FIELD_file method was redefined to change the file name and
>>> resize it. Now in 1.0 I can rename the filename with a callable to use
>>> as upload_to ImageField argument:
>>>
>>> def _upload_to(instance, filename):
>>> intancia.imagen. raw_contents = Foto._ajustar_tamanio(raw_contents)
>>> filename = Foto._cambio_de_nombre(filename)
>>> if TESTING:
>>> return os.path.join('tests_dest', filename)
>>> return os.path.join('imagenes', filename)
>>>
>>> but I don't know where I have to put my code to resize the image
>>> before it gets saved. Can anyone help me?
>>>
>>> Thanks,
>>>
>>> Juanjo
>>
>> I have been overriding the save method on the model. I have found
>> that by the time the save method is called, the file is saved to the
>> disk already, So I open the original, resize and save to the
>> thumbnail:
>>
>> class Picture(models.Model)
>> name = models.CharField(max_length=200)
>> original = models.ImageField(upload_to='original')
>> thumbnail = models.ImageField(upload_to='thumbnail')
>>
>> def save(self, **kwargs):
>> orig = Image.open(self.original.path)
>> name = os.path.basename(self.original.name)
>> height = int(100 * orig.size[1] / orig.size[0])
>>
>> thumb = orig.resize((width, height), Image.ANTIALIAS)
>> thumb_file = tempfile.NamedTemporaryFile('w+b')
>> resized.save(thumb_file, 'JPEG')
>> self.thumbnail.save(name, File(thumb_file), False)
>> thumb_file.close()
>>
>> super(Picture, self).save(**kwargs)
>>
>> I have to save the resized image to a temp file because
>> self.thumbnail.save takes a django.core.files.File object which takes
>> an python file object in the constructor. I would love to be able to
>> use an in memory object instead of a temp file, but that isn't in
>> possible yet.
>>
>> John
>> >>
>>
>
>
>
> --
> Juanjo Conti
>
--
Juanjo Conti
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