Merge pull request #22506 from derekprior/dp-redirect_to_back_or_default

Add `redirect_to_back_or_default`

2 files changed, 6 insertions, 3 deletions

diff --git a/guides/source/action_controller_overview.md b/guides/source/action_controller_overview.md
index 7e43ba375a..6c622a3643 100644
--- a/guides/source/action_controller_overview.md
+++ b/guides/source/action_controller_overview.md
@@ -1150,7 +1150,7 @@ class ApplicationController < ActionController::Base
 
     def user_not_authorized
       flash[:error] = "You don't have access to this section."
-      redirect_to :back
+      redirect_back(fallback_location: root_path)
     end
 end
 
diff --git a/guides/source/layouts_and_rendering.md b/guides/source/layouts_and_rendering.md
index 71cc030f6a..4bb364c0f8 100644
--- a/guides/source/layouts_and_rendering.md
+++ b/guides/source/layouts_and_rendering.md
@@ -622,10 +622,13 @@ Another way to handle returning responses to an HTTP request is with `redirect_t
 redirect_to photos_url
 ```
 
-You can use `redirect_to` with any arguments that you could use with `link_to` or `url_for`. There's also a special redirect that sends the user back to the page they just came from:
+You can use `redirect_back` to return the user to the page they just came from.
+This location is pulled from the `HTTP_REFERER` header which is not guaranteed
+to be set by the browser, so you must provide the `fallback_location`
+to use in this case.
 
 ```ruby
-redirect_to :back
+redirect_back(fallback_location: root_path)
 ```
 
 #### Getting a Different Redirect Status Code