Django图像字段引发TypeError [英] Django image field throws TypeError

问题描述

我正在使用django编写一个简单的网站来显示一些图片.在我的模型中，我定义了一个图像模型和一个类别模型，以便我可以对每个图像进行分类:

I'm writing a simple website using django to display some pictures. In my models, I've defined an image model, and a category model to allow me to categorize each image:

class Image(models.Model):
    title = models.CharField(max_length=200)
    image = models.ImageField(upload_to='images')
    tags = models.ManyToManyField(Category)

我想使用django内置的ImageField字段django.db.models.ImageField附加实际的图像字段，而该字段又使用Python Imaging Library.我可以很好地定义模型，但是当我尝试通过内置的管理站点添加图像时，单击保存会出现以下错误: TypeError: 'ImageFieldFile' object has no attribute '__getitem__' 我不明白为什么会看到此错误，因为我从不要求 getitem "属性，其他所有字段都可以正常工作-只是ImageField导致TypeError.有任何想法吗?我的PIL安装是否可能有问题?我在Mac上，一开始安装PIL时遇到了一些小麻烦，但现在看来工作正常.谢谢！

I'd like to attach the actual image field using django's built in ImageField field django.db.models.ImageField which in turn uses the Python Imaging Library. I can define my models fine, but when I attempt to add an Image through the built-in admin site, I get the following error upon hitting save: TypeError: 'ImageFieldFile' object has no attribute '__getitem__' I don't understand why I'm seeing this error, as I never ask for the getitem' atribute, and all of my other fields work fine – it's only the ImageField that causes the TypeError. Any Ideas? Is this possibly an issue with my PIL install? I am on a Mac, and had some minor difficulty installing PIL in the first place, but it seems to work fine now. Thanks!

推荐答案

我遇到了与此类类似的问题:

I ran into a similar issue with this class:

class Photo(models.Model):
    image_location = models.ImageField(upload_to='pix/%Y/%m/%d')
    caption = models.CharField(max_length=100)

    object = Manager()

您看到此错误的原因可能是因为您要返回模型对象(例如:照片对象):

You're seeing the error possibly because you're returning a model object (eg: Photo object):

#returning model object(eg: Photo object)
def __unicode__(self):
    return self.image_location

代替unicode字符串(例如:/Path/to/my/pix):

Instead of a unicode string (eg: /Path/to/my/pix):

#returning unicode string instead of model object(eg: /Path/to/my/pix)
def __unicode__(self):
    return unicode(self.image_location)

这是帮助我的StackOverflow答案的链接: TypeError'x '对象没有属性'__getitem__'

This is the link to the StackOverflow answer that helped me: TypeError 'x' object has no attribute '__getitem__'

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