- AC::Parameters#convert_parameters_to_hashes should return filtered or
unfiltered values based on whether it is called from `to_h` or `to_unsafe_h`
instead of always defaulting to `to_h`.
- Fixes#22841
During the `5.0.0.beta1` release, the CHANGELOGs got an entry like the
following:
```
* No changes.
```
It is kinda confusing as there are indeed changes after it. Not a
biggie, just a small pass over the CHANGELOGs.
[ci skip]
The ActionPack test suite had a handful of these warnings when run. This
was due to `assert_response` being tested outside the context of a
controller instance where those instance variables would already have
been initialized.
If you're not familiar with how the `Referer` header works, you likely
won't understand why you need to provide a fallback or under what
circumstances it would be used.
Hopefully this clarifies things a bit.
When calling `to_h` on an `ActionController::Parameters` instance it would
`deep_dup` its internal parameters.
This inadvertently called `dup` on a passed Active Record model which would
create new models. Fix by only dupping Ruby's Arrays and Hashes.
Applications that use `redirect_to :back` can be forced to 500 by
clients that do not send the HTTP `Referer` (sic) header.
`redirect_back` requires the user to consider this possibility up front
and avoids this trivially-caused application error.
`redirect_to :back` is a somewhat common pattern in Rails apps, but it
is not completely safe. There are a number of circumstances where HTTP
referrer information is not available on the request. This happens often
with bot traffic and occasionally to user traffic depending on browser
security settings.
When there is no referrer available on the request, `redirect_to :back`
will raise `ActionController::RedirectBackError`, usually resulting in
an application error.
`redirect_back` takes a required `fallback_location` keyword argument
that specifies the redirect when the referrer information is not
available. This prevents 500 errors caused by
`ActionController::RedirectBackError`.
Introduced in e56c63542780fe2fb804636a875f95cae08ab3f4, `CacheHelper#fragment_cache_key` is a duplicate of `ActionController::Caching::Fragments#fragment_cache_key`.
We now require the view to provide this method on its own (as with `view_cache_dependencies`); `ActionController::Caching::Fragments` exports its version as a `helper_method`.
In Rails 5.1 `ActionController::TestCase` will be moved out of Rails
into it's own gem.
Please use `ActionDispatch::IntegrationTest` going foward.
Because this will be moved to a gem I used `# :stopdoc:` instead of
deleting the documentation. This will remove it from the Rails
documentation but still leave the method documented for when we move it
to a gem.
Guides have been updated to use the routing structure used in Integration
and all test examples have been updated to inherit from
`ActionDispatch::IntegrationTest` instead of `ActionController::TestCase.
Fixes#22496
