| Commit message (Collapse) | Author | Age | Files | Lines |
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Remove parsing of character type default values for 8.1 formatting since
Rails doesn't support postgreSQL 8.1 anymore.
Remove misleading comment unrelated to code.
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According to postgreSQL documentation:
(http://www.postgresql.org/docs/8.2/static/catalog-pg-attrdef.html)
we should not be using 'adsrc' field because this field is unaware of
outside changes that could affect the way that default values are
represented. Thus, I changed the queries to use
"pg_get_expr(adbin, adrelid)" instead of the historical "adsrc" field.
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PostgreSQL adapter properly parses default values when using multiple
schemas and domains.
When using domains across schemas, PostgresSQL prefixes the type of the
default value with the name of the schema where that type (or domain) is.
For example, this query:
```
SELECT a.attname, d.adsrc
FROM pg_attribute a LEFT JOIN pg_attrdef d
ON a.attrelid = d.adrelid AND a.attnum = d.adnum
WHERE a.attrelid = "defaults"'::regclass
AND a.attnum > 0 AND NOT a.attisdropped
ORDER BY a.attnum;
```
could return something like "'<default_value>'::pg_catalog.text" or
"(''<default_value>'::pg_catalog.text)::text" for the text columns with
defaults.
I modified the regexp used to parse this value so that it ignores
anything between ':: and \b(?:character varying|bpchar|text), and it
allows to have optional parens like in the above second example.
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Before:
Calculating -------------------------------------
ar 87 i/100ms
-------------------------------------------------
ar 823.4 (±11.8%) i/s - 4089 in 5.070234s
After:
Calculating -------------------------------------
ar 88 i/100ms
-------------------------------------------------
ar 894.1 (±3.9%) i/s - 4488 in 5.028161s
Same test as 3a6dfca7f5f5bd45cea2f6ac348178e72423e1d5
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before:
Calculating -------------------------------------
ar 83 i/100ms
-------------------------------------------------
ar 832.1 (±4.0%) i/s - 4233 in 5.096611s
after:
Calculating -------------------------------------
ar 87 i/100ms
-------------------------------------------------
ar 839.0 (±9.3%) i/s - 4176 in 5.032782s
Benchmark:
require 'config/environment'
require 'benchmark/ips'
GC.disable
unless User.find_by_login('tater')
u = User.new
u.login = 'tater'
u.save!
end
def active_record
user = User.find_by_login('tater')
starred = user.starred_items.count
end
active_record
Benchmark.ips do |x|
x.report("ar") { active_record }
end
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This improves memory and performance without having to use symbols which
present DoS problems. Thanks @headius and @tenderlove for the
suggestion.
Benchmark
---------
require 'active_record'
require 'benchmark/ips'
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database:
':memory:')
class Post < ActiveRecord::Base
connection.create_table :posts, force: true do |t|
t.string :name
end
end
post = Post.create name: 'omg'
Benchmark.ips do |r|
r.report('Post.new') { Post.new name: 'omg' }
r.report('post.name') { post.name }
r.report('post.name=') { post.name = 'omg' }
r.report('Post.find(1).name') { Post.find(1).name }
end
Before
------
Calculating -------------------------------------
Post.new 1419 i/100ms
post.name 7538 i/100ms
post.name= 3024 i/100ms
Post.find(1).name 243 i/100ms
-------------------------------------------------
Post.new 20637.6 (±12.7%) i/s - 102168 in 5.039578s
post.name 1167897.7 (±18.2%) i/s - 5186144 in 4.983077s
post.name= 64305.6 (±9.6%) i/s - 317520 in 4.998720s
Post.find(1).name 2678.8 (±10.8%) i/s - 13365 in 5.051265s
After
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Calculating -------------------------------------
Post.new 1431 i/100ms
post.name 7790 i/100ms
post.name= 3181 i/100ms
Post.find(1).name 245 i/100ms
-------------------------------------------------
Post.new 21308.8 (±12.2%) i/s - 105894 in 5.053879s
post.name 1534103.8 (±2.1%) i/s - 7634200 in 4.979405s
post.name= 67441.0 (±7.5%) i/s - 337186 in 5.037871s
Post.find(1).name 2681.9 (±10.6%) i/s - 13475 in 5.084511s
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This reverts commit 86c3dfbd47cb96af02daaa655963292b1a1b110e.
Conflicts:
activerecord/lib/active_record/attribute_methods/read.rb
Reason: whilst this increased performance, it also presents a DoS risk
via memory exhaustion if users were allowing user input to dictate the
arguments of read/write_attribute. I will investigate alternative ways
to cut down on string allocations here.
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Without eager autoloading, these would be autoloaded
only when #preloader_for is called, which is too late
in threaded applications.
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deprecation message
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Conflicts:
activerecord/lib/active_record/persistence.rb
railties/lib/rails/generators/rails/resource_route/resource_route_generator.rb
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code docs
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Fix has_many assocation w/select load after create
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If you create a new record via a collection association proxy that has
not loaded its target, and which selects additional attributes through
the association, then when the proxy loads its target, it will
inadvertently trigger an ActiveModel::MissingAttributeError during
attribute writing when CollectionAssociation#merge_target_lists attempts
to do its thing, since the newly loaded records will possess attributes
the created record does not.
This error also raises a bogus/confusing deprecation warning when
accessing the association in Rails 3.2.x, so cherry-pick would be
appreciated!
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This reverts commit abf8de85519141496a6773310964ec03f6106f3f.
We should take a deeper look to those cases flat_map doesn't do deep
flattening.
irb(main):002:0> [[[1,3], [1,2]]].map{|i| i}.flatten
=> [1, 3, 1, 2]
irb(main):003:0> [[[1,3], [1,2]]].flat_map{|i| i}
=> [[1, 3], [1, 2]]
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this method was not used, not documented and not tested.
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Rename `ActiveRecord::Fixtures` class to `ActiveRecord::FixtureSet`. Instances of this class normally hold a collection of fixtures (records) loaded either from a single YAML file, or from a file and a folder with the same name. This change make the class name singular and makes the class easier to distinguish from the modules like `ActiveRecord::TestFixtures`, which operates on multiple fixture sets, or `DelegatingFixtures`, `::Fixtures`, etc., and from the class `ActiveRecord::Fixture`, which corresponds to a single fixture.
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- Changed the comments documentation for the update_column(s) methods to add a little bit of clarity
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Patches `CollectionAssociation#count` to return 0 without querying
if the parent record is new. Consider the following code:
class Account
has_many :dossiers
end
class Dossier
belongs_to :account
end
a = Account.new
a.dossiers.build
# before patch
a.dossiers.count
# SELECT COUNT(*) FROM "dossiers" WHERE "dossiers"."account_id" IS NULL
# => 0
# after
a.dosiers.count # fires without sql query
# => 0
Fixes #1856.
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Fix reset_counters crashing on has_many :through associations.
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The counter column name in the intermediate model need to be access
via the through reflection.
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Optimize log subscribers to check if the log level is sufficient
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performing an operations.
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reflection init as 'if' stantment.
column is always the same expression and depends from the changing of attributes
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Conflicts:
actionpack/lib/action_view/helpers/asset_tag_helper.rb
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