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This reverts commit 3420a14590c0e6915d8b6c242887f74adb4120f9, reversing
changes made to afb66a5a598ce4ac74ad84b125a5abf046dcf5aa.
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Enforce frozen string in Rubocop
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Fixes https://github.com/rails/rails/issues/29617
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In order to fully support the same interface as `Hash#delete`, we need
to pass the block through to the underlying method, not just the key.
This used to work correctly, but it regressed when
`ActionController::Parameters` stopped inheriting from `Hash` in 5.0.
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Now methods that implicit convert objects to a hash will be able to work
without requiring the users to change their implementation.
This method will return a Hash instead of a HashWithIndefirentAccess
to mimic the same implementation of HashWithIndefirentAccess#to_hash.
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Before we returned either an empty hash or only the always permitted
parameters (:controller and :action by default).
The previous behavior was dangerous because in order to get the
attributes users usually fallback to use to_unsafe_h that could
potentially introduce security issues.
The to_unsafe_h API is also not good since Parameters is a object that
quacks like a Hash but not in all cases since to_h would return an empty
hash and users were forced to check if to_unsafe_h is defined or if the
instance is a ActionController::Parameters in order to work with it.
This end up coupling a lot of libraries and parts of the application
with something that is from the controller layer.
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In the context of controller parameters, reverse_merge is commonly used
to provide defaults for user input. Having an alias to reverse_merge
called with_defaults feels more idiomatic for Rails.
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- This PR adds the `reverse_merge` and `reverse_merge!` method to `ActionController::Parameters`
- Fixes #28353
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These are followups for 307065f959f2b34bdad16487bae906eb3bfeaf28,
but TBH I'm personally not very much confortable with this style.
Maybe we could override assert_equal in our test_helper not to warn?
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the speed-up from 26dd9b26ab7317f94fd285245879e888344143b2 (cc: @fxn)
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[26dd9b26ab7317f94fd285245879e888344143b2] as it broke Parameters#to_h on at least fields_for-style nested params.
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The current implementation of AC::Parameters#permit builds permitted hashes and
then calls permit! on them.
This filtering is recursive, so we call permit! on terminal branches, but then
ascendants call permit! on themselves when the recursion goes up the stack,
which recurses all the way down again because permit! is recursive itself.
Repeat this for every parent node and you get some scary O-something going on
that I don't even want to compute.
Instead, since the whole point of the permit recursion is to build permitted
hashes along the way and at that point you know you've just come up with a
valid filtered version, you can already switch the toggle on the spot.
I have seen 2x speedups in casual benchmarks with small structures. As the
previous description shows, the difference in performance is going to be a
function of the nesting.
Note that that the involved methods are private and used only by permit.
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add `ActionController::Parameters#merge!`
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This method has the same behavior as `Hash#merge!`, returns current
`ActionController::Parameters`.
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* ActionController::Parameters#deep_dup
* Tests for ActionController::Parameters#deep_dup
* Fix test for ActionController::Parameters#deep_dup
* More tests for ActionController::Parameters#deep_dup
[Rafael Mendonça França + Pavel Evstigneev]
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`ActionController::Parameters#merge` call `HashWithIndifferentAccess#merge`.
In addition, it calls `HashWithIndifferentAccess#update` from
`HashWithIndifferentAccess#merge`, where it is called the `#to_hash` of argument.
But `ActionController::Parameters#to_hash` is deprecated, warning message is
displayed.
To avoid this, modify to convert object to `Hash`.
Fixes #26415
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Show unpermitted parameters as symbols in logs (so they could be copy…
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to the code)
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Style/SpaceBeforeBlockBraces
Style/SpaceInsideBlockBraces
Style/SpaceInsideHashLiteralBraces
Fix all violations in the repository.
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Hash syntax auto-correcting breaks alignments. 411ccbdab2608c62aabdb320d52cb02d446bb39c
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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Screwed up both the left and right hand sides!
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The tests were written with the common false value seen in Rails apps,
show that intent in the code.
Should also fix the build on 5-0-stable.
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If we were to serialize an `ActionController::Parameters` on Psych 2.0.8, we'd get:
```yaml
--- !ruby/hash:ActionController::Parameters
key: :value
```
Because 2.0.8 didn't store instance variables, while 2.0.9 did:
https://github.com/tenderlove/psych/commit/8f84ad0fc711a82a1040def861cb121e8985fd4c
That, coupled with 2.0.8 calling `new` instead of `allocate` meant parameters was
deserialized just fine:
https://github.com/tenderlove/psych/commit/af308f8307899cb9e1c0fffea4bce3110a1c3926
However, if users have 2.0.8 serialized parameters, then upgrade to Psych 2.0.9+ and
Rails 5, it would start to blow up because `initialize` will never be called, and thus
`@parameters` will never be assigned. Hello, `NoMethodErrors` on `NilClass`! :)
To fix this we register another variant of the previous serialization format and take
it into account in `init_with`.
I've tested this in our app and previously raising code now deserializes like a champ.
I'm unsure how to test this in our suite because we use Psych 2.0.8 and don't know how
to make us use 2.0.9+ for just one test.
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By changing ActionController::Parameter's superclass, Rails 5 also changed
the YAML serialization format.
Since YAML doesn't know how to handle parameters it would fallback to its
routine for the superclass, which in Rails 4.2 was Hash while just Object
in Rails 5. As evident in the tags YAML would spit out:
4.2: !ruby/hash-with-ivars:ActionController::Parameters
5.0: !ruby/object:ActionController::Parameters
Thus when loading parameters YAML from 4.2 in Rails 5, it would parse a
hash dump as it would an Object class.
To fix this we have to provide our own `init_with` to be aware of the past
format as well as the new one. Then we add a `load_tags` mapping, such that
when the YAML parser sees `!ruby/hash-with-ivars:ActionController::Parameters`,
it knows to call our `init_with` function and not try to instantiate it as
a normal hash subclass.
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- Tests for dup'ing params was separately added in a separate file in
https://github.com/rails/rails/pull/25735.
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`#initialize_copy` to manually duplicate the underlying parameters hash
It looks like `ActionController::Parameters#dup` is leftover from when the class inherited from `Hash`. We can just trust `#dup`, which already copies the `@permitted` instance variable (confirmed by tests). We still define a `#initialize_copy` to make `@parameters` a copy that can be mutated without affecting the original instance.
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When `ActionController::Parameters` is duplicated with `#dup`, it doesn't create a duplicate of the instance variables (e.g. `@parameters`) but rather maintains the reference (see <http://ruby-doc.org/core-2.3.1/Object.html>). Given that the parameters object is often manipulated as if it were a hash (e.g. with `#delete` and similar methods), this leads to unexpected behaviour, like the following:
```
params = ActionController::Parameters.new(foo: "bar")
duplicated_params = params.dup
duplicated_params.delete(:foo)
params == duplicated_params
```
This fixes the bug by defining a private `#initialize_copy` method, used internally by `#dup`, which makes a copy of `@parameters`.
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Renamed NestedParametersTest to NestedParametersPermitTest
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