For Rails 3.2 or Rails 4+
You should use
request.original_url to get the current URL.
This method is documented at original_url method, but if you're curious, the implementation is:
def original_url
base_url + original_fullpath
end
For Rails 3:
You can write
"#{request.protocol}#{request.host_with_port}#{request.fullpath}", since
request.url is now deprecated.
For Rails 2:
You can write
request.url instead of
request.request_uri. This combines the protocol (usually http://) with the host, and request_uri to give you the full address.
