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使用Django的ImageField上传图片,将其重命名为随机文件名并创建缩略图。
原标题:Using Djangos ImageField to upload an image, rename it to a random filename and create thumbnail

Hay guys, I ve为我的照片撰写了简单的上载方法。

class Picture(models.Model):
    path = models.CharField(max_length=200)
    filename = models.CharField(max_length=200)
    car = models.ForeignKey( Car )
    thumb_path = models.CharField(max_length=200)
    created_on = models.DateField(auto_now_add=True)
    updated_on = models.DateField(auto_now=True)

    def save(self):
        if not self.id:
            thumb_size = 128, 128
            thumb_path = "assests/uploads/thumb"+self.filename
            t = Image.open(self.path)
            t.thumbnail(thumb_size,Image.ANTIALIAS)
            t.save(thumb_path, "JPEG")
        self.thumb_path = thumb_path
        super(Picture, self).save()

    def delete(self):
        os.unlink(self.thumb_path)
        os.unlink(self.path)
        super(Picture, self).delete()

正如您所看到的,这不是最好的方法,我想转而使用ImageField()来完成大部分工作,但我仍希望有灵活性来创建缩略图和随机文件名。

我需要为PictureThumbnail创建另一个模型吗?我不想使用任何第三方扩展。

我该如何使用ImageField使其工作?所有图片都将上传到/assests/uploads/。

增 编

最佳回答

你可以使用适应版:

http://www.djangosnippets.org/snippets/1100/

或者根据您需要做什么,您可以考虑基于模板过滤的方法,类似于这样:

将此翻译为中文:http://www.djangosnippets.org/snippets/1887/ http://www.djangosnippets.org/snippets/1887/

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