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since the minimum version of PostgreSQL currently Rails supports is 9.1,
there is no need to handle if `supports_extensions?`
Refer https://www.postgresql.org/docs/9.1/static/sql-createextension.html
"CREATE EXTENSION"
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bogdanvlviv/simplify-api-domcumentation-of-durations
Simplify API documentation of methods that return a Duration
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Related to #30972
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Make clear that Time core extensions are split between Numeric and Integer
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The documentation wrongly suggests that Time extensions to Numeric include
methods months and years, when these belong to Integer.
Update both classes and guides.
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Space between { and | missing.
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Improve a code style recommendation following Rubocop instructions https://codeclimate.com/github/rails/rails/issues
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Currently alias tracker only refer a table name, doesn't respect an
alias name. Should use `join.left.name` rather than
`join.left.table_name`.
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yahonda/remove_supports_disable_referential_integrity
Remove `supports_disable_referential_integrity?`
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`supports_disable_referential_integrity?` used to handle
if PostgreSQL database supports
`ALTER TABLE <table name> DISABLE/ENABLE TRIGGER` statements.
Refer https://github.com/rails/rails/commit/9a947af0e79cfb8692eb7e5ae94c1b8c40756f49
These statements have been documented since 8.1.
https://www.postgresql.org/docs/8.1/static/sql-altertable.html
> DISABLE/ENABLE TRIGGER
Now Rails supports PostgreSQL 9.1 or higher only.
No need to handle `supports_disable_referential_integrity?` anymore.
Also, this method does not exist in any other adapters including AbstractAdapter.
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Performance improvements for acts_like? method
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activesupport/lib/active_support/core_ext/object/acts_like.rb
acts_like?
Add a case statement to use direct symbols instead of string
interpolation for the three scenarios I found in the Rails codebase:
time, date, and string.
For time/date/string, this change prevents two string allocations for
each time the method is called and speeds up the method by ~2.7x. For
other arguments, there is no memory difference and performance
difference is within margin of error.
begin
require "bundler/inline"
rescue LoadError => e
$stderr.puts "Bundler version 1.10 or later is required. Please update
your Bundler"
raise e
end
gemfile(true) do
source "https://rubygems.org"
gem "rails", github: "rails/rails"
gem "arel", github: "rails/arel"
gem "benchmark-ips"
end
def allocate_count
GC.disable
before = ObjectSpace.count_objects
yield
after = ObjectSpace.count_objects
after.each { |k,v| after[k] = v - before[k] }
after[:T_HASH] -= 1 # probe effect - we created the before hash.
GC.enable
result = after.reject { |k,v| v == 0 }
GC.start
result
end
class Object
def fast_acts_like?(duck)
case duck
when :time
respond_to? :acts_like_time?
when :date
respond_to? :acts_like_date?
when :string
respond_to? :acts_like_string?
else
respond_to? :"acts_like_#{duck}?"
end
end
end
puts
puts " acts_like? ".center(80, '=')
puts
obj = ''.freeze
%i(time date string super_hacka).each do |type|
puts " #{type} ".center(80, '=')
puts " Memory Usage ".center(80, "=")
puts
puts "value.acts_like?"
puts allocate_count { 1000.times { obj.acts_like?(type) } }
puts "value.fast_acts_like?"
puts allocate_count { 1000.times { obj.fast_acts_like?(type) } }
puts
puts " Benchmark.ips ".center(80, "=")
puts
Benchmark.ips do |x|
x.report("acts_like?") { obj.acts_like?(type) }
x.report("fast_acts_like?") { obj.fast_acts_like?(type) }
x.compare!
end
end
================================== acts_like? ==================================
===================================== time =====================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-1983, :T_STRING=>2052, :T_IMEMO=>1}
value.fast_acts_like?
{:FREE=>-1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 104.281k i/100ms
fast_acts_like? 155.523k i/100ms
Calculating -------------------------------------
acts_like? 1.688M (±10.7%) i/s - 8.342M in 5.003804s
fast_acts_like? 4.596M (±12.1%) i/s - 22.551M in 5.000124s
Comparison:
fast_acts_like?: 4596162.4 i/s
acts_like?: 1688163.8 i/s - 2.72x slower
===================================== date =====================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-2001, :T_STRING=>2000}
value.fast_acts_like?
{:FREE=>-1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 85.372k i/100ms
fast_acts_like? 166.097k i/100ms
Calculating -------------------------------------
acts_like? 1.720M (± 8.3%) i/s - 8.537M in 5.001003s
fast_acts_like? 4.695M (±10.1%) i/s - 23.254M in 5.010734s
Comparison:
fast_acts_like?: 4695493.1 i/s
acts_like?: 1719637.9 i/s - 2.73x slower
==================================== string ====================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-2001, :T_STRING=>2000}
value.fast_acts_like?
{:FREE=>-1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 100.221k i/100ms
fast_acts_like? 182.841k i/100ms
Calculating -------------------------------------
acts_like? 1.706M (± 7.3%) i/s - 8.519M in 5.022331s
fast_acts_like? 3.968M (±22.8%) i/s - 18.650M in 5.006762s
Comparison:
fast_acts_like?: 3967972.9 i/s
acts_like?: 1705773.7 i/s - 2.33x slower
================================= super_hacka ==================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-2004, :T_STRING=>2002, :T_SYMBOL=>1}
value.fast_acts_like?
{:FREE=>-2003, :T_STRING=>2001, :T_SYMBOL=>1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 100.344k i/100ms
fast_acts_like? 101.690k i/100ms
Calculating -------------------------------------
acts_like? 1.617M (± 7.5%) i/s - 8.128M in 5.055285s
fast_acts_like? 1.534M (±10.1%) i/s - 7.627M in 5.031052s
Comparison:
acts_like?: 1617390.7 i/s
fast_acts_like?: 1533897.3 i/s - same-ish: difference falls within error
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Fix #to_json for IO objects, fixes #26132
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specify minimum capybara version for system tests
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Upgraded rails applications may have a Gemfile without a new enough
capybara to run system tests. Setting a version here gives the user a
more direct error message than they get otherwise. Resolves #30952
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Start bringing attributes API to AM
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This is the first PR of a WIP to bring the attributes API to
ActiveModel. It is not yet ready for public API.
The `attributes_dirty_test.rb` file was created based on `dirty_test.rb`,
and the simplifications in the diff do much to motivate this change.
```
diff activemodel/test/cases/dirty_test.rb activemodel/test/cases/attributes_dirty_test.rb
3a4
> require "active_model/attributes"
5c6
< class DirtyTest < ActiveModel::TestCase
---
> class AttributesDirtyTest < ActiveModel::TestCase
7,41c8,12
< include ActiveModel::Dirty
< define_attribute_methods :name, :color, :size
<
< def initialize
< @name = nil
< @color = nil
< @size = nil
< end
<
< def name
< @name
< end
<
< def name=(val)
< name_will_change!
< @name = val
< end
<
< def color
< @color
< end
<
< def color=(val)
< color_will_change! unless val == @color
< @color = val
< end
<
< def size
< @size
< end
<
< def size=(val)
< attribute_will_change!(:size) unless val == @size
< @size = val
< end
---
> include ActiveModel::Model
> include ActiveModel::Attributes
> attribute :name, :string
> attribute :color, :string
> attribute :size, :integer
```
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Remove mention about Evented Redis [ci skip]
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Evented Redis is removed from Rails.
See #30945
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Remove deprecations
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`initialize_internal_metadata_table`
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object
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Remove CHANGELOG entry for the change that was backported to 5-1-stable [ci skip]
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skip]
- It was backported in
https://github.com/rails/rails/commit/0eae8dd4b859c109919e5da0d6e74ffc6dc8a258
and is present in Rails 5.1.3
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It should be shared the count of alias tracking in both INNER/LEFT JOINs
to avoid duplicate aliases.
Fixes #30504.
Closes #30410.
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Currently we have no test for alias tracking with string joins. I've add
test case for that to catch a future regression.
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Since `MocktailDesigner` inherits `DrinkDesigner` and can not be used
alone.
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