Full url for an image-path in Rails 3

Question

I have an Image, which contains carrierwave uploads:

Image.find(:first).image.url #=> \"/uploads/image/4d90/display_foo.jpg\"

In my vie

Answer 1

There's quite a bunch of answers here. However, I didn't like any of them since all of them rely on me to remember to explicitly add the port, protocol etc. I find this to be the most elegant way of doing this:

full_url = URI( root_url )
full_url.path = Image.first.image.url
# Or maybe you want a link to some asset, like I did:
# full_url.path = image_path("whatevar.jpg")
full_url.to_s

And what is the best thing about it is that we can easily change just one thing and no matter what thing that might be you always do it the same way. Say if you wanted to drop the protocol and and use the The Protocol-relative URL, do this before the final conversion to string.

full_url.scheme = nil

Yay, now I have a way of converting my asset image urls to protocol relative urls that I can use on a code snippet that others might want to add on their site and they'll work regardless of the protocol they use on their site (providing that your site supports either protocol).