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Mutating the result of Relation#to_a should not affect the relation
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Clarifying this separation and enforcing relation immutability is the
culmination of the previous efforts to remove the mutator method
delegations.
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Make collection caching explicit.
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Augments the collection caching with some instrumentation that's logged.
For collections that have been cached like:
```ruby
<%= render partial: 'notifications/notification', collection: @notifications, cached: true %>
```
We'll output a line showing how many cache hits we had when rendering it:
```
Rendered collection of notifications/_notification.html.erb [0 / 100 cache hits] (3396.5ms)
```
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Reevaluating the log output generated from this instrumentation,
we've found that it wasn't all that useful in practice.
```
Caches multi read:
- views/david/2/4184ab71db6849621a4d8820fcd2c0ad
- views/david/2/4184ab71db6849621a4d8820fcd2c0ad
- views/david/3/4184ab71db6849621a4d8820fcd2c0ad
- views/david/3/4184ab71db6849621a4d8820fcd2c0ad
```
If rendering many templates the output is inscrutable, and it's impossible
to see how many cache misses there were.
Revert ca6aba7f30 and implement a better way later.
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Having collection caching that wraps templates and automatically tries
to infer if they are cachable proved to be too much of a hassle.
We'd rather have it be something you explicitly turn on.
This removes much of the code and docs to explain the previous automatic
behavior.
This change also removes scoped cache keys and passing cache_options.
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fix typo
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Fixes #23645
When you're using an `attr_accessor` for a record instead of an
attribute in the database there's no way for the record to know if it
has `changed?` unless you tell it `attribute_will_change!("attribute")`.
The change made in 27aa4dd updated validations to check if a record was
`changed?` or `marked_for_destruction?` or not `persisted?`. It did not
take into account virtual attributes that do not affect the model's
dirty status.
The only way to fix this is to always validate the record if the
attribute does not belong to the set of attributes the record expects
(in `record.attributes`) because virtual attributes will not be in that
hash.
I think we should consider deprecating this particular behavior in the
future and requiring that the user mark the record dirty by noting that
the virtual attribute will change. Unfortunately this isn't easy because
we have no way of knowing that you did the "right thing" in your
application by marking it dirty and will get the deprecation warning
even if you are doing the correct thing.
For now this restores expected behavior when using a virtual attribute
by always validating the record, as well as adds tests for this case.
I was going to add the `!record.attributes.include?(attribute)` to the
`should_validate?` method but `uniqueness` cannot validate a virtual
attribute with nothing to hold on to the attribute. Because of this
`should_validate?` was about to become a very messy method so I decided
to split them up so we can handle it specifically for each case.
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Fixed a typo
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* master:
eliminate warnings about multiple primary keys on habtm join tables
Add methods to array delegation from `Relation`
Fix button_to's params option to support nested names.
Dependencies clean up
Deprecate AC::Parameters#== with a Hash
Fix AC::Parameters#== with other AC::Parameters
Tests for AC::Parameters#==
better docs for ActiveSupport::TestCase#assert_nothing_raised
remove needless `debug_exception_response_format` config [ci skip]
partial pass over the API guide [ci skip]
Fix `unsubscribed` server side behavior
Use a semaphore to signal message availability
Fix master build
Remove github gems from the master bug report templates
Truncate ActionCable broadcast message to 300 chars
Remove unused require
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habtm join tables commonly have two id columns and it's OK to make those
two id columns a primary key. This commit eliminates the warnings for
join tables that have this setup.
ManageIQ/manageiq#6713
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Deprecate AC::Parameters#== with Hash
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Creating a protected getter method for `@parameters`.
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Add methods back to array delegation from ActiveRecord::Relation
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Delegation of some `Array` methods was removed in commit 9d79334. That
change did add explicit delegation of a few methods that `Array` has but
which aren't on `Enumerable`. However, a few non-mutation methods were
omitted. This adds `Array` delegation of `#in_groups`, `#in_groups_of`,
`#shuffle` and `#split`. This allows things like
`MyThing.all.in_groups_of(3) { ... }` to continue working as they did
before commit 9d79334.
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Fix button_to's params option to support nested names.
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In e6e0579defcfcf94ef1c4c1c7659f374a5335cdb the `params` option was added to the `button_to` helper. However, the patch doesn't support nested hashes so `{a: {b: 'c'}}` for example gets turned into a hidden form input with the name 'a' and the value being the string representation of the `{b: 'c'}` nested hash.
Since Rails supports nested hashes everywhere else (and even in the URL params of link_to and button_to), I believe this to be a bug/unfinished feature.
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Dependencies clean up
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Cleans up four items I came across in ActiveSupport::Dependencies:
- DependenciesTest#
test_dependency_which_raises_exception_isnt_added_to_loaded_set:
Fixes current implementation which will pass no matter what since the
filepath is never added to "loaded" or "history" without being
expanded first.
- Remove DependenciesTest#test_unhook. Seems leftover from when
alias_method_chain was used in Loadable and ModuleConstMissing.
The test will always pass since Module never responds to those methods
- WatchStack#new_constants documentation: update self to @stack.
Looks like self was leftover from when WatchStack inherited from Hash
- Remove ActiveSupport namespace from call to
Dependencies.constant_watch_stack.watching? since the namespace is not
needed, Dependencies is called two other times in the same method
without it (even on the same line) and it brings the line to within
80 characters
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Make ActionCable logging less verbose in development
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When running the ActionCable server in development I get a lot of output
in my logs, this commit sets a maximum length of 300 characters for a
broadcast log message.
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wisetara/wisetara/update-docs-ActiveSupport__TestCase#assert_nothing_raised-for-pr
better docs for ActiveSupport::TestCase#assert_nothing_raised
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y-yagi/remove_needless_debug_exception_response_format_config
remove needless `debug_exception_response_format` config [ci skip]
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Since a0343d11f1bf80a79e273c1d0cf9934ef2601e98, `debug_exception_response_format` config depends on `api_only`.
Therefore, if set the `api_only`, need to specify `debug_exception_response_format` is not.
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Remove unused require
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`require 'active_support/core_ext/benchmark'` was added by 4ecdf24.
But currently unused anymore.
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Fix `unsubscribed` server side behavior
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Before this commit, the `unsubscribed` callbacks in Action Cable server
side channels were never called. This is because when a WebSocket
"goodbye" message was sent from the client, the Action Cable server
didn't properly clean up after the now closed WebSocket. This means that
memory could possibly skyrocket with this behavior, since part of this
commit is to properly remove closed subscriptions from the global
subscriptions hash. Say you have 10,000 users currently connected, and
then all 10,000 disconnect -- before this patch, Action Cable would
still hold onto information (and Ruby objects!) for all of these now
dead connections.
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The Event hack was too much of a hack: on actually thinking about it,
there's a rather obvious race.
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Fix master build
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All gems are released now so we don't need to ask the github repository
for these gems anymore.
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we know that all child templates will be considered as "partials", so
the only one that needs detection by name is the root node
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Only the root node has injected dependencies, so we don't need to care
about them at lower levels. This change pushes the injected
dependencies up to where the user passed them in.
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this is for backwards compatibility. We should remove this after
5-0-stable is created because digest calculation should be amortized.
Caching digests of subtrees will speed up digests for other trees that
share the same children. However, this will also increase memory, and
after the app warms up, then those subtrees will never be reused which
means that memory is wasted.
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* master: (27 commits)
move digest cache on to the DetailsKey object
remove object `hash` cache
[ci skip] fix suggested change-replace 'an' with 'the in Rails engine guide'
Missing documentation about hash algorithm option for MessageVerifier [ci skip]
set `skip_listen` option to dummy appplication
Fix the language in engines guide
Add accidentally removed `#` [ci skip]
fields_for_style needs to test for AC::Parameters
Fix indentation for code block in changelog
Remove accidentally duplicated change log title [ci skip]
partially revert 69009f4473637a44ade26d954ef5ddea6ff903f2
Remove needless `case_insensitive_comparison` in mysql2 adapter
modify to `error` also abort when specify fail fast option
Implement ActionController::Parameters#inspect
remove unused method
Remove unused Journey code
Add Action Cable CHANGELOG in release notes [ci skip]
Show proper error message when a non-relation object is passed to AR::Relation#or
Fix semantics of test names for finish option in batches_test
Fix typo
...
Conflicts:
actionview/lib/action_view/digestor.rb
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move digest cache on to the DetailsKey object
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This moves digest calculation cache on to the details key object.
Before, the digest cache was a class level ivar, and one of the keys was
the hash value of the details key object:
https://github.com/rails/rails/blob/13c4cc3b5aea02716b7459c0da641438077f5236/actionview/lib/action_view/digestor.rb#L28
An object's hash value is not unique, so it's possible for this cache
key to produce colliding keys with no resolution. This commit move
cache on to the details key object itself, so we know that the digests
are always unique per details key object.
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set `skip_listen` option to dummy appplication
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If you want to use `EventedFileUpdateChecker`, need to specify `listen` to plugin's gemspec.
However, the default is not specified `listen` to plugin's gemspec,
`EventedFileUpdateChecker` should be disabled.
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I don't think caching this method makes any difference on Ruby 2.0:
```
require 'benchmark/ips'
class Foo
alias :object_hash :hash
attr_reader :hash
def initialize
@hash = object_hash
end
end
class Bar
end
hash = {}
foo = Foo.new
bar = Bar.new
Benchmark.ips do |x|
x.report("foo") { hash[foo] }
x.report("bar") { hash[bar] }
x.report("foo.hash") { foo.hash }
x.report("bar.hash") { bar.hash }
end
__END__
[aaron@TC ruby (trunk)]$ ruby test.rb
Warming up --------------------------------------
foo 118.361k i/100ms
bar 118.637k i/100ms
Calculating -------------------------------------
foo 7.944M (± 3.1%) i/s - 39.769M
bar 7.931M (± 3.4%) i/s - 39.625M
[aaron@TC ruby (trunk)]$ ruby test.rb
Warming up --------------------------------------
foo 122.180k i/100ms
bar 120.492k i/100ms
foo.hash 123.397k i/100ms
bar.hash 119.312k i/100ms
Calculating -------------------------------------
foo 8.002M (± 4.2%) i/s - 39.953M
bar 8.037M (± 4.5%) i/s - 40.124M
foo.hash 8.819M (± 3.9%) i/s - 44.053M
bar.hash 7.856M (± 4.1%) i/s - 39.254M
```
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