Capturing previous URL
Tagged with
Rails
Language: Ruby
A simple way to “go back” to the previous page. Use the session to track the URLs by loading the current URL in each time, and then updating it on each request. If you don’t want a URL to be recorded (you want the user to go back to the page before another page, use the :except option with the filter.
Then just
redirect_to session[:last_request_uri]
View as text
after_filter :save_last_request_uri
# saves the last requested uri to the session. Ignores reloads, Ajax requests, and redirects.
def save_last_request_uri
if request.get? and response.redirected_to.nil?
session[:last_request_uri] = session[:this_request_uri]
session[:this_request_uri] = request.request_uri
session[:last_unique_request_uri] = session[:last_request_uri] if session[:this_request_uri] != session[:last_request_uri]
end
end