如果在 Rackspace Cloudfiles 中删除图像，会出现默认图像吗？
疯狂的问题，但我需要/希望能够使用与 cloudfiles 图像相同的 url 来显示替换图像，以防找不到实际图像。
因此，在某人博客上的 img 标签中，它将指向我托管的图像。如果实际图像不再存在，我想显示另一张图像，而不是显示浏览器执行的令人讨厌的带边框的 img 文件。
在使用回形针的 Rails 中，我们可以设置默认图像，但前提是该字段尚未填充。我想在现实的暴徒生活中复制这种想法。
想法？
Wild question, but I need/want the ability to have a replacement image appear, using the same url to a cloudfiles image, incase that actual image can't be found.
So in an img tag on someone's blog it would point to an image i host. if the actual image isn't there anymore, instead of showing that annoying bordered img file that browser's do, i'd like to show another image.
In rails using paperclip, we can set a default image, but that is only if the field isn't populated yet. It's this thinking i'd like to replicate in real thug life.
thoughts?
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我为自有品牌制作了一个与此类似的功能。用户可以上传自己的徽标来替换我网站的徽标。每当他们访问 website.com/theircompany 时，都会显示他们的徽标和登录信息。我让它通过视图中的简单 If then 显示它们的图像，而不是服务器默认图像。我查看该“公司”是否上传了图片。如果是，则显示他们的图像。如果没有，则显示服务器默认值。
更新：根据您下面的评论，我知道这可能是一个问题。如果这些图像相当小（<1MB），您可以将它们存储在数据库中吗？这就是我目前在服务器上处理图像的方式，听起来这对你有用。有一个经过修改的回形针宝石可以实现这一点。我已经分叉了它，因为我知道这个版本与我的服务器和 MySQL 完美配合。
https://github.com/kobaltz/paperclip
I made a function similar to this for private branding. The user can upload their own logo to replace my website's logo. Whenever they go to website.com/theircompany it will show their logo and login information. I have it displaying their image instead of the server default by a simple If Then in the view. I look to see if that 'company' has an image uploaded. If it does then display their image. If it does not then display the server default.
UPDATE: Based on your comment below, I see where that can be an issue. If these images will be rather small (<1MB) could you store them in a database? That is how I'm currently handling the images on my server and it sounds like that could work for you. There is a modified Paperclip gem that will allow this. I have forked it since I know that this version works perfectly with my server and MySQL.
https://github.com/kobaltz/paperclip