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Introduce explicit way of halting callback chains by throwing :abort. Deprecate current implicit behavior of halting callback chains by returning `false` in apps ported to Rails 5.0. Completely remove that behavior in brand new Rails 5.0 apps.
Conflicts:
railties/CHANGELOG.md
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This stems from [a comment](rails#17227 (comment)) by @dhh.
In summary:
* New Rails 5.0 apps will not accept `return false` as a way to halt callback chains, and will not display a deprecation warning.
* Existing apps ported to Rails 5.0 will still accept `return false` as a way to halt callback chains, albeit with a deprecation warning.
For this purpose, this commit introduces a Rails configuration option:
```ruby
config.active_support.halt_callback_chains_on_return_false
```
For new Rails 5.0 apps, this option will be set to `false` by a new initializer
`config/initializers/callback_terminator.rb`:
```ruby
Rails.application.config.active_support.halt_callback_chains_on_return_false = false
```
For existing apps ported to Rails 5.0, the initializers above will not exist.
Even running `rake rails:update` will not create this initializer.
Since the default value of `halt_callback_chains_on_return_false` is set to
`true`, these apps will still accept `return true` as a way to halt callback
chains, displaying a deprecation warning.
Developers will be able to switch to the new behavior (and stop the warning)
by manually adding the line above to their `config/application.rb`.
A gist with the suggested release notes to add to Rails 5.0 after this
commit is available at https://gist.github.com/claudiob/614c59409fb7d11f2931
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After this commit, returning `false` in a callback will display a deprecation
warning to make developers aware of the fact that they need to explicitly
`throw(:abort)` if their intention is to halt a callback chain.
This commit also patches two internal uses of AS::Callbacks (inside
ActiveRecord and ActionDispatch) which sometimes return `false` but whose
returned value is not meaningful for the purpose of execution.
In both cases, the returned value is set to `true`, which does not affect the
execution of the callbacks but prevents unrequested deprecation warnings from
showing up.
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This commit changes arguments and default value of CallbackChain's :terminator
option.
After this commit, Chains of callbacks defined **without** an explicit
`:terminator` option will be halted as soon as a `before_` callback throws
`:abort`.
Chains of callbacks defined **with** a `:terminator` option will maintain their
existing behavior of halting as soon as a `before_` callback matches the
terminator's expectation. For instance, ActiveModel's callbacks will still
halt the chain when a `before_` callback returns `false`.
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Add examples for missing_name, missing_name?
[ci skip]
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Also add doc examples for `Object.nil`.
[ci skip]
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Fix TaggedLogging to allow loggers to be instantiated multiple times without having to share the stack of tags
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having to share the stack of tags. This is accomplished by using a unique key for the thread-local tag list. Fixes #9064.
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`MissingSourceFile` was just an alias to `LoadError` and was not
being raised inside the framework.
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replace use of MissingSourceFile with LoadError
Conflicts:
activesupport/test/core_ext/load_error_test.rb
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They are already present on Ruby 2.2
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Rely on NameError#name instead of its error message
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Rubinius' error messages don't call `#inspect` on the concerned object
while the assertion is here to address a wrong inspection on MRI with
time zones so let's keep this test for now on Rubinius.
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This constant may be define for auxiliar gems like rails-html-sanitizer
and these methods call will fail.
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This code was there just to convert entries generated in Rails
4.0.0.beta1 applications to a supported format.
It is almost unlikely that any existent application have this cache
entry format in their caches at the point that Rails 5 will be released
so we don't need this code anymore.
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We should convert when @v is defined not @value.
The test was calling value first that already converts the entry so we
are not catching this bug.
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Update copyright notices to 2015 [ci skip]
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Flatten the call stacks ActiveSupport::Callbacks produces, fix #18011.
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the object being accessed currently returns `html_safe?` as true,
we used to set `@html_safe` variable as true on new object created. When doing something like
x = 'Hello'.html_safe
x[/a/, 1]
would throw an error on ruby 2.2, since when nothign gets matched nil is returned by the code and it tries to set `@html_safe` value to true,
which would error since starting 2.2 nil is frozen.
This change adds a safety net to avoid setting `@html_safe = true` on frozen objects.
Fixes #18235
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Stems from [this comment](https://github.com/rails/rails/pull/18203#issuecomment-68138096) by @robin850
and by the blog post http://weblog.rubyonrails.org/2014/12/19/Rails-4-2-final
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this should be `:nodoc:` in order to be parsed.
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Add docs for `minutes`, `hours`, `days`, `weeks` and `fortnights`.
Fix docs for `in_milliseconds`.
[ci skip]
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@rafaelfranca suggested in f7c7bcd9 that code examples should display
the result after `# =>` and not after `#=>`.
This commit replaces *all* the occurrences of `#=>` in the code documentation
(mostly added by me :sob:) with the suggested `# =>`.
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Add docs for `kilobytes`, `megabytes`, `gigabytes`, `terabytes`,
`petabytes` and `exabytes`. Fix docs for `bytes`.
[ci skip]
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Also improves docs for `Time#find_zone!`
[ci skip]
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Stems from comments by @zzak on e07f3dd:
* https://github.com/rails/docrails/commit/e07f3ddcac394d2a8dc23fc571318b7e8c2497b1#commitcomment-9015634
* https://github.com/rails/docrails/commit/e07f3ddcac394d2a8dc23fc571318b7e8c2497b1#commitcomment-9015639
[ci skip]
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[ci skip]
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Document `test_order` and `test_order=` from `ActiveSupport::TestCase`.
[ci skip]
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Replace AS::TimeWithZone#since with alias to +
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Stems from [Google group discussion](https://groups.google.com/forum/#!topic/rubyonrails-core/jSPbP-TNLb0).
Currently `AS::TimeWithZone` has two methods to add an interval to a time:
`+(other)` and `since(other)` ([docs](http://edgeapi.rubyonrails.org/classes/ActiveSupport/TimeWithZone.html)).
The two methods are "pretty much" equivalent in every case:
1. When adding any interval to an `AS::TimeWithZone` representing a `Time`:
```ruby
t = Time.now.in_time_zone #=> Thu, 04 Dec 2014 18:56:28 EST -05:00
t + 1 == t.since(1) #=> true
t + 1.day == t.since(1.day) #=> true
t + 1.month == t.since(1.month) #=> true
```
2. When adding any interval to an `AS::TimeWithZone` representing a `Date`:
```ruby
d = Date.today.in_time_zone #=> Thu, 04 Dec 2014 00:00:00 EST -05:00
d + 1 == d.since(1) #=> true
d + 1.day == d.since(1.day) #=> true
d + 1.month == d.since(1.month) #=> true
```
3. When adding any interval to an `AS::TimeWithZone` representing a `DateTime`:
```ruby
dt = DateTime.now.in_time_zone #=> Thu, 04 Dec 2014 18:57:28 EST -05:00
dt + 1 == dt.since(1) #=> true
dt + 1.day == dt.since(1.day) #=> true
dt + 1.month == dt.since(1.month) #=> false
```
As you can see, the only case in which they differ is when the interval added
to a `DateTime` is in a format like `1.month`.
However, this usage of "since" is explicitly discouraged by the
[documentation of `DateTime#since`](https://github.com/rails/rails/blob/master/activesupport/lib/active_support/core_ext/date_time/calculations.rb#L86L88):
> Returns a new DateTime representing the time a number of seconds since the instance time.
> Do not use this method in combination with x.months, use months_since instead!
And indeed, following this recommendation the correct result is returned:
```ruby
dt + 1.month == dt.months_since 1 #=> true
```
Therefore, my proposal is to remove the method definition of `TimeWithZone#since`
and instead replace it with a simple `alias_method :since, :+`.
The rationale is that the only case where they differ is a case that is
explicitly discouraged as "wrong".
In my opinion, having two methods named `since` and `+` and having to figure
out exactly what the difference is makes the codebase more confusing.
However, I understand this PR is "subjective", so if you feel like it's better
to ignore this, feel free to close the PR.
Thanks!
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Use thread_safe gem version greater or equal to 0.3.4
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Add class level case operator support for error dispatching in Rescuable
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Add test for `:skip_after_callbacks_if_terminated`
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`define_callbacks` from `ActiveSupport::Callbacks` accepts the
`:skip_after_callbacks_if_terminated` option since #4866 but the option
is not tested anywhere.
This commit adds tests and fixes documentation for the option, making it clear
that halting a callback chain only stops following `before_` and `around_`
callbacks by default.
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