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Merge pull request #41493 from radar/redirect-back 

Add redirect_back directive to Rails 5.0 -> 5.1 upgrade guide
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Rafael França 2021-02-18 18:37:10 -05:00 committed by GitHub
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guides/source/upgrading_ruby_on_rails.md
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@ -710,13 +710,24 @@ Rails.application.secrets[:smtp_settings][:address]
### Removed deprecated support to `:text` and `:nothing` in `render`
If your views are using `render :text`, they will no longer work. The new method
If your controllers are using `render :text`, they will no longer work. The new method
of rendering text with MIME type of `text/plain` is to use `render :plain`.
Similarly, `render :nothing` is also removed and you should use the `head` method
to send responses that contain only headers. For example, `head :ok` sends a
200 response with no body to render.
### Removed deprecated support of `redirect_to :back`
In Rails 5.0, `redirect_to :back` was deprecated. In Rails 5.1, it was removed completely.
As an alternative, use `redirect_back`. It's important to note that `redirect_back` also takes
a `fallback_location` option which will be used in case the `HTTP_REFERER` is missing.
```
redirect_back(fallback_location: root_path)
```
Upgrading from Rails 4.2 to Rails 5.0
-------------------------------------