| Commit message (Collapse) | Author | Age | Files | Lines |
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This is to simplify the association API, as you can call `reload` on the
association proxy or the parent object to get the same result.
For collection association, you can call `#reload` on association proxy
to force a reload:
@user.posts.reload # Instead of @user.posts(true)
For singular association, you can call `#reload` on the parent object to
clear its association cache then call the association method:
@user.reload.profile # Instead of @user.profile(true)
Passing a truthy argument to force association to reload will be removed
in Rails 5.1.
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This reverts commit bdc1d329d4eea823d07cf010064bd19c07099ff3.
Before:
Calculating -------------------------------------
22.000 i/100ms
-------------------------------------------------
229.700 (± 0.4%) i/s - 1.166k
Total Allocated Object: 9939
After:
Calculating -------------------------------------
24.000 i/100ms
-------------------------------------------------
246.443 (± 0.8%) i/s - 1.248k
Total Allocated Object: 7939
```
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', ref: 'bdc1d329d4eea823d07cf010064bd19c07099ff3'
gem 'rails', github: 'rails/rails', ref: 'd2876141d08341ec67cf6a11a073d1acfb920de7'
gem 'arel', github: 'rails/arel'
gem 'sqlite3'
gem 'benchmark-ips'
end
require 'active_record'
require 'benchmark/ips'
ActiveRecord::Base.establish_connection('sqlite3::memory:')
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define do
create_table :users, force: true do |t|
t.string :name, :email
t.boolean :admin
t.timestamps null: false
end
end
class User < ActiveRecord::Base
default_scope { where(admin: true) }
end
admin = true
1000.times do
attributes = {
name: "Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
email: "foobar@email.com",
admin: admin
}
User.create!(attributes)
admin = !admin
end
GC.disable
Benchmark.ips(5, 3) do |x|
x.report { User.all.to_a }
end
key =
if RUBY_VERSION < '2.2'
:total_allocated_object
else
:total_allocated_objects
end
before = GC.stat[key]
User.all.to_a
after = GC.stat[key]
puts "Total Allocated Object: #{after - before}"
```
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The changes introduced to through associations in c80487eb were quite
interesting. Changing `relation.merge!(scope)` to `relation =
relation.merge(scope)` should in theory never cause any changes in
behavior. The subtle breakage led to a surprising conclusion.
The old code wasn't doing anything! Since `merge!` calls
`instance_exec` when given a proc, and most scopes will look something
like `has_many :foos, -> { where(foo: :bar) }`, if we're not capturing
the return value, it's a no-op. However, removing the `merge` causes
`unscope` to break.
While we're merging in the rest of the chain elsewhere, we were never
merging in `unscope` values, causing a breakage on associations where a
default scope was being unscoped in an association scope (yuk!). This is
subtly related to #20722, since it appears we were previously relying on
this mutability.
Fixes #20721.
Fixes #20727.
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These classes are part of Active Record Preloader, which is not part of
the public API.
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[ci skip] correct for ActiveRecord::Associations::Preloader
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Fix `undefined method uncached` for polymorphic belongs_to #20426
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Unitialized polymorphic `belongs_to` associations raise an error while
attempting to reload, as they attempt to make an uncached reload, but
don't have a klass to fetch uncachedly. In this case, `loaded?` should
be `false` anyway.
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for a namespaced association
fixes #20541
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relationship without the foreign key attribute
fixes regression reported on #20253
ActiveRecord::Base#[] was not used cause of 8b95420
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Improve the guide about `has_many` `collection.clear` to indicate
the behavior for each dependent strategy according to
`collection.delete_all`.
Based on #17179, I changed the `collection.delete` docs to also
clarify the default strategy for each `hm` and `hm:t` associations.
Fixes #20170.
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In 1f006c an option was added called :class to allow passing anonymous
classes to association definitions. Since using :class instead of
:class_name is a fairly common typo even amongst experienced developers
this can result in hard to debug errors arising in raise_on_type_mismatch?
To fix this we're renaming the option from :class to :anonymous_class as
that is a more correct description of what the option is for. Since this
was an internal, undocumented option there is no need for a deprecation.
Fixes #19659
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To me it seems like this should only be the case if `autosave: true` is
set on the association. However, when implemented that way, it caused
issues with has many associations, where we have explicit tests stating
that child records are updated when the parent is new, even if autosave
is not set (presumably to update the parent id, but other changed
attributes would be persisted as well).
It's quirky, but at least we should be consistently quirky. This
constitutes a minor but subtle change in behavior, and therefore should
not be backported to 4.2 and earlier.
Fixes #19782
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[fixes #18606]
Make belongs_to use touch over touch_later when running the callbacks.
Add more tests and small method rename
Thanks Jeremy for the feedback.
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Fix a regression introduced by removing unnecessary db call when replacing
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When replacing a has_many association with the same one, there is nothing to do with database but a setter method should still return the substituted value for backward compatibility.
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Fix AS::Callbacks raising an error when `:run` callback is defined.
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This reverts commit 796cab45561fce268aa74e6587cdb9cae3bb243e.
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https://github.com/ruby/ruby/pull/579 - there is a new optimization
since ruby 2.2
Previously regexp patterns were faster (since a string was converted to
regexp underneath anyway). But now string patterns are faster and
better reflect the purpose.
Benchmark.ips do |bm|
bm.report('regexp') { 'this is ::a random string'.gsub(/::/, '/') }
bm.report('string') { 'this is ::a random string'.gsub('::', '/') }
bm.compare!
end
# string: 753724.4 i/s
# regexp: 501443.1 i/s - 1.50x slower
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present from the start.
When a new record has the necessary information prior to save, we can
avoid busting the cache.
We could simply clear the @proxy on #reset or #reset_scope, but that
would clear the cache more often than necessary.
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Instead use .scope_attributes? consistently in ActiveRecord to check whether
there are attributes currently associated with the scope.
Move the implementation of .scope_attributes? and .scope_attributes to
ActiveRecord::Scoping because they don't particularly have to do specifically
with Named scopes and their only dependency, in the case of
.scope_attributes?, and only caller, in the case of .scope_attributes is
contained in Scoping.
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Doc fix [ci skip]
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- CollectionProxy#clear method calls delete_all so the SQL is directly
run into the database.
- So the updated_at column of the object on which its run is not
updated.
- Closes #17161
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Deprecate `required` option in favor of `optional` for belongs_to.
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Isolate access to @associations_cache and @aggregations_cache to the Associations and Aggregations modules, respectively.
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Associations and Aggregations modules, respectively.
This includes replacing the `association_cache` accessor with a more
limited `association_cached?` accessor and making `clear_association_cache`
and `clear_aggregation_cache` private.
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Use SQL COUNT and LIMIT 1 queries for none? and one? methods if no block or limit is given,
instead of loading the entire collection to memory. The any? and many? methods already
follow this behavior.
[Eugene Gilburg & Rafael Mendonça França]
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The cache name should be converted to a string when given, not compared
as a symbol. This edge case is already adequately covered by our tests,
but was masked by another issue where we were incorrectly updating the
counter cache twice. When paired with a bug where we didn't update the
counter cache because we couldn't find a match with the name, this made
it look like everything was working fine.
Fixes #10865.
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Conflicts:
activerecord/CHANGELOG.md
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Provide a better error message on :required association
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Fixes #18696.
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Remaining are `limit`, `precision`, `scale`, and `type` (the symbol
version). These will remain on the column, since they mirror the options
to the `column` method in the schema definition DSL
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`bound_attributes` is now used universally across the board, removing
the need for the conversion layer. These changes are mostly mechanical,
with the exception of the log subscriber. Additional, we had to
implement `hash` on the attribute objects, so they could be used as a
key for query caching.
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The column is primarily used for type casting, which we're trying to
separate from the idea of a column. Since what we really need is the
combination of a name, type, and value, let's use the object that we
already have to represent that concept, rather than this tuple. No
consumers of the bind values have been changed, only the producers
(outside of tests which care too much about internals). This is
*finally* possible since the bind values are now produced from a
reasonable number of lcoations.
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I'm going to be extracting this logic into a clause class, things need
to go through a method and not access the values hash directly.
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This removes the need to duplicate much of the logic in `WhereClause`
and `PredicateBuilder`, simplifies the code, removes the need for the
connection adapter to be continuously passed around, and removes one
place that cares about the internal representation of `bind_values`
Part of the larger refactoring to change how binds are represented
internally
[Sean Griffin & anthonynavarre]
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When we made sure that the counter gets updated in memory, we only did
it on the has many side. The has many side only does the update if the
belongs to cannot. The belongs to side was updated to update the counter
cache (if it is able). This means that we need to check if the
belongs_to is able to update in memory on the has_many side.
We also found an inconsistency where the reflection names were used to
grab the association which should update the counter cache. Since
reflection names are now strings, this means it was using a different
instance than the one which would have the inverse instance set.
Fixes #18689
[Sean Griffin & anthonynavarre]
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There are many ways that things end up getting passed to `concat`. Not
all of those entry points called `flatten` on their input. It seems that
just about every method that is meant to take a single record, or that
splats its input, is meant to also take an array. `concat` is the
earliest point that is common to all of the methods which add records to
the association. Partially fixes #18689
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Bind values are no longer a thing, so this is unnecessary.
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See 4d7a62293e148604045a5f78a9d4312e79e90d13 for the reasoning
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The structure of `values[:where]` is going to change, with an
intermediate definition of `where_values` to aid the refactoring.
Accessing `values[:where]` directly messes with that, signficantly.
The array wrapping is no longer necessary, since `where_values` will
always return an array.
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Specifically, the issue is relying on `where_unscoping` mutating the
where values. It does not, however, mutate the bind values, which could
cause an error under certain circumstances. This was not exposed by the
tests, since the only place which would have been affected is unscoping
a boolean, which doesn't go through prepared statements. I had a hard
time getting better test coverage to demonstrate the issue.
This in turn, caused `merge` to go through proper logic, and try to
clear out the binds associated with the unscoped relation, which then
exposed a source of `nil` for the columns, as binds weren't expanding
`{ "posts.id" => 1 }` to `{ "posts" => { "id" => 1 } }`. This has been
fixed.
The bulk of `create_binds` needed to be moved to a separate method,
since the dot notation should not be expanded recursively.
I'm pretty sure this removes a subtle quirk that a ton of code in
`Relation::Merger` is working around, and I suspect that code can be
greatly simplified. However, unraveling that rats nest is no small task.
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