| Commit message (Collapse) | Author | Age | Files | Lines |
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Pass a base relation to build_default_scope when joining
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This allows the default scope to be built using the current table alias.
Resolves #12770
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Pass the id of the object to the method by calling `.id` on the AR
object.
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Apparently we've been using a buggy feature for the past 6 years:
https://bugs.ruby-lang.org/issues/9593
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When replacing a has_many association with the same one, there is no
need to do a round-trip to the db to create/and drop a new transaction.
[fixes #14220]
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`before_add` callbacks are fired before the record is saved on
`has_and_belongs_to_many` assocations *and* on `has_many :through`
associations. Before this change, `before_add` callbacks would be fired
before the record was saved on `has_and_belongs_to_many` associations, but
*not* on `has_many :through` associations.
Fixes #14144
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constructor"
This reverts commit f9e4c3c7c0c4152b62fe9202a9d12262884bb118.
[fixes #14116]
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If we know the alias tracker is empty, we can create one that doesn't
use a hash with default block for counting.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3',
database: ':memory:')
ActiveRecord::Schema.define do
create_table :posts, force: true do |t|
t.integer :comments_count
end
create_table :comments, force: true do |t|
t.integer :post_id
end
end
class Post < ActiveRecord::Base; has_many :comments; end
class Comment < ActiveRecord::Base; belongs_to :post, counter_cache: true; end
10.times { Comment.create!(post: Post.create!) }
record = Post.first
association_name = :comments
Benchmark.ips do |x|
reflection = record.class.reflect_on_association(association_name)
association = reflection.association_class.new(record, reflection)
x.report('assoc') do
reflection.association_class.new(record, reflection)
end
x.report('reader') do
association.reader;nil
end
x.report('combined') do
reflection.association_class.new(record, reflection).reader;nil
end
end
[aaron@higgins rails (tracker)]$ TEST=ips bundle exec ruby ../1bb5456b5e035343df9d/gistfile1.rb
-- create_table(:posts, {:force=>true})
-> 0.0062s
-- create_table(:comments, {:force=>true})
-> 0.0003s
Calculating -------------------------------------
assoc 833 i/100ms
reader 28703 i/100ms
combined 839 i/100ms
-------------------------------------------------
assoc 9010.3 (±3.8%) i/s - 44982 in 5.000022s
reader 3214523.4 (±5.5%) i/s - 16016274 in 5.001136s
combined 8841.0 (±5.8%) i/s - 44467 in 5.049269s
[aaron@higgins rails (tracker)]$ TEST=ips bundle exec ruby ../1bb5456b5e035343df9d/gistfile1.rb
-- create_table(:posts, {:force=>true})
-> 0.0060s
-- create_table(:comments, {:force=>true})
-> 0.0003s
Calculating -------------------------------------
assoc 888 i/100ms
reader 29217 i/100ms
combined 900 i/100ms
-------------------------------------------------
assoc 9674.3 (±3.3%) i/s - 48840 in 5.054022s
reader 2988474.8 (±6.9%) i/s - 14842236 in 4.998230s
combined 9674.0 (±3.1%) i/s - 48600 in 5.028694s
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This helps with our sanity. The class is internal, we can refactor to a
"nice" API later.
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AssociationScope no longer maintains state, so we're safe to keep a
singleton and save on GC time
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Fortisque/kevin/active_record_HABTM_with_belongs_to
destruction errors out on HABTM w/out primary key
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Dangerous association names conflicts include instance or class
methods already defined by `ActiveRecord::Base`.
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Need to define #reset on CollectionProxy.
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This commit fixes two regressions introduced in cafe31a078 where
newly created finder methods #second, #third, #forth, and #fifth
caused a NoMethodError error on reload associations and where we
were pulling the wrong element out of cached associations.
Examples:
some_book.authors.reload.second
# Before
# => NoMethodError: undefined method 'first' for nil:NilClass
# After
# => #<Author id: 2, name: "Sally Second", ...>
some_book.first.authors.first
some_book.first.authors.second
# Before
# => #<Author id: 1, name: "Freddy First", ...>
# => #<Author id: 1, name: "Freddy First", ...>
# After
# => #<Author id: 1, name: "Freddy First", ...>
# => #<Author id: 2, name: "Sally Second", ...>
Fixes #13783.
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Since Rails 4.0, we add an ORDER BY in the `first` method to ensure consistent
results among different database engines. But for singular associations this
behavior is not needed since we will have one record to return. As this
ORDER BY option can lead some performance issues we are removing it for singular
associations accessors.
Fixes #12623.
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rather than allocating a new Relation, just make the AST directly
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derikson/collection_proxy_select_with_multiple_args
Change CollectionProxy#select to take the same arguments as ActiveRecord::select
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arguments.
This makes the arguments the same as ActiveRecord::QueryMethods::select.
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Fix for #13437
Conflicts:
activerecord/CHANGELOG.md
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a8 introduced a regression in includes/preloades
by calling `read_attribute` on an association when preloading takes places, instead of using loaded records in `association.target`.
tl;dr
Records are not made properly available via `read_attribute` when preloding in simultaneous,
but value of `@loaded` is already set true, and records concatenated in `association.target` on an association object.
When `@loaded` is true we return an object of `AlreadyLoaded` in preload_for. In `AlreadyLoaded` to return preloaded
records we make wrong use of `read_attribute`, instead of `target` records.
The regression is fixed by making use of the loaded records in `association.target` when the preloading takes place.
Fixes #13437
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Outer joins were being built on the root relation klass rather than the
one specified in the join dependency root
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Fixes: #13445
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fix CollectionAssociation's comments
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AssociationProxy to match changes for 3.1 removing Association proxy.
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Assigning nil to a polymorphic belongs_to would nullify its _id field by
not its _type field.
Fixes failing test from c141dfc838a5dca9f197814410fa5d44c143129c.
Regression from 1678e959e973de32287b65c52ebc6cce87148951.
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