Question

简介：我需要在个人资料图片中减少django图片的大小，以使宽度为300px，高度自动确定为与原始图片成比例。我该如何使用下面的代码

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)        
    profile_image = models.ImageField(upload_to='profile_images/', default='', blank=True, null=True)

    def save(self, force_insert=False, force_update=False, using=None,
             update_fields=None):
        # Opening the uploaded image
        im = Image.open(self.profile_image)

        output = BytesIO()

        # Resize/modify the image
        im = im.resize((300, 250)) 
        #Here the width is 300 and height is 250. I want width to be 300 and height to be proportionately added. How do I modify the above code

        # after modifications, save it to the output
        im.save(output, format='JPEG', quality=100)
        output.seek(0)

        # change the imagefield value to be the newley modifed image value
        self.profile_image = InMemoryUploadedFile(output, 'ImageField', "%s.jpg" % self.profile_image.name.split('.')[0], 'image/jpeg',
                                        sys.getsizeof(output), None)

        super(Profile, self).save()

Answer 1

您可以这样做（根据this答案）：

im = Image.open(self.profile_image)
output = BytesIO()
basewidth = 300
wpercent = (basewidth/float(im.size[0]))
hsize = int((float(img.size[1])*float(wpercent)))
im = im.resize((basewidth, hsize))

如何在Django Imagefield中仅调整宽度

1 个答案: