On Fri, Aug 21, 2009 at 3:50 AM, TiNo<tin...@gmail.com> wrote:
> On Fri, Aug 21, 2009 at 10:40, Léon Dignòn <leon.dig...@gmail.com> wrote:
>>
>> Hello,
>>
>> in my ModelForm I try to allow only images (for avatar) smaller than
>> 64*64 pixels. I've done this by overriding clean_avatar(). But how can
>> I check the dimensions? The instance is an InMemoryUploadedFile which
>> has no width or height. Any help regarding this?
>>
>> class UserProfileForm(ModelForm):
>> class Meta:
>> model = UserProfile
>> exclude = ('user',) # User will be filled in by the view.
>>
>> def clean_avatar(self):
>> img = self.cleaned_data['avatar']
>>
>> if img.size > 10000: # working fine!
>> raise forms.ValidationError("Filesize too big. Max. 10k")
>> if img.width > 64: # 'InMemoryUploadedFile' object has no
>> attribute 'width'
>> raise forms.ValidationError("Not more than 64*64 pixels.")
>> return img
>
> You can do this with PIL:
> import Image
> image = Image.open(img)
> if image.size[0] > 64: #image.size is a 2-tuple (width, height)
> ...
> Or you could resize it down to 64 px if it is bigger.
> TiNo
> >
>
If you call django.core.files.images. get_image_dimensions on the file
you'll get back a width, height dimension tuple.
Alex
--
"I disapprove of what you say, but I will defend to the death your
right to say it." -- Voltaire
"The people's good is the highest law." -- Cicero
"Code can always be simpler than you think, but never as simple as you
want" -- Me
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