| Commit message (Collapse) | Author | Age | Files | Lines |
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Do not let use `serialize` on native JSON/array column
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Sync transaction state when accessing primary key
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If a record is modified inside a transaction, it must check the outcome
of that transaction before accessing any state which would no longer be
valid if it was rolled back.
For example, consider a new record that was saved inside a transaction
which was later rolled back: it should be restored to its previous state
so that saving it again inserts a new row into the database instead of
trying to update a row that no longer exists.
The `id` and `id=` methods defined on the PrimaryKey module implement
this correctly, but when a model uses a custom primary key, the reader
and writer methods for that attribute must check the transaction state
too. The `read_attribute` and `write_attribute` methods also need to
check the transaction state when accessing the primary key.
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Improve the performance of writing attributes
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This name more accurately describes what the method does, and also
disambiguates it from `_write_attribute`, which ignores aliases.
We can also make the method private, since it's not public API and only
called from one place - `update_columns` - without an explicit receiver.
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Using a similar approach to 08576b94ad4f19dfc368619d7751e211d23dcad8,
this change adds a new internal `_write_attribute` method which bypasses
the code that checks for attribute aliases and custom primary keys.
We can use this method instead of `write_attribute` when we know that we
have the name of the actual column to be updated and not an alias.
This makes writing an attribute with `attribute=` about 18% faster.
Benchmark:
```
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 "sqlite3"
gem "benchmark-ips"
end
require "active_record"
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Schema.define do
create_table :posts, force: true do |t|
end
end
class Post < ActiveRecord::Base
end
post = Post.new(id: 1)
Benchmark.ips do |x|
x.report("attribute=") { post.id = post.id + 1 }
end
```
Before:
Warming up --------------------------------------
attribute= 25.889k i/100ms
Calculating -------------------------------------
attribute= 290.946k (± 3.1%) i/s - 1.476M in 5.077036s
After:
Warming up --------------------------------------
attribute= 30.056k i/100ms
Calculating -------------------------------------
attribute= 345.088k (± 4.8%) i/s - 1.743M in 5.064264s
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The `raw_write_attribute` method is used to update a record's attributes
to reflect the new state of the database in `update_columns`. The hash
provided to `update_columns` is turned into an UPDATE query directly,
which means passing an `id` key results in an update to the `id` column,
even if the model uses a different attribute as its primary key. When
updating the record, we don't want to apply the `id` column change to
the primary key attribute, since that's not what happened in the query.
Without the code to handle this case, `write_attribute_with_type_cast`
no longer contains any logic shared between `raw_write_attribute` and
`write_attribute`, so we can inline the code into those two methods.
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`sync_with_transaction_state` in `to_key` is unneeded because `id` also
does.
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Currently the methods of `AttributeMethods::PrimaryKey` are overwritten
by `define_attribute_methods`. It will be broken if a table that
customized primary key has non primary key id column.
It should not be overwritten if a table has any primary key.
Fixes #29350.
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* Allow a default value to be declared for class_attribute
* Convert to using class_attribute default rather than explicit setter
* Removed instance_accessor option by mistake
* False is a valid default value
* Documentation
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We already have a _read_attribute method that can get the value we need
from the model. Lets define that method in AM::Dirty and use the
existing one from AR::Dirty rather than introducing a new method.
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Since using a `ActiveSupport::Deprecation::DeprecatedConstantProxy`
would prevent people from inheriting this class and extending it
from the `ActiveSupport::HashWithIndifferentAccess` one would break
the ancestors chain, that's the best option we have here.
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Pointed out by @matthewd that the HWIA subclass changes the
AS scoped class and top-level HWIA hierarchies out from under
existing classes.
This reverts commit 71da39097b67114329be6d8db7fe6911124531af, reversing
changes made to 41c33bd4b2ec3f4a482e6030b6fda15091d81e4a.
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This constant was kept for the sake of backward compatibility; it
is still available under `ActiveSupport::HashWithIndifferentAccess`.
Furthermore, since Ruby 2.5 (https://bugs.ruby-lang.org/issues/11547)
won't support top level constant lookup, people would have to update
their code anyway.
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These files are not using `strip_heredoc`.
Closes #27976
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This was never really intended to work (at least not without calling
`define_attribute_methods`, which is less common with Active Record). As
we move forward the intention is to require the use of `attribute` over
`attr_accessor` for more complex model behavior both on Active Record
and Active Model, so this behavior is deprecated.
Fixes #27956.
Close #27963.
[Alex Serban & Sean Griffin]
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Actually, private methods cannot be called with `self.`, so it's not just redundant, it's a bad habit in Ruby
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Add missing `emit_warning_if_needed` for `changed?`
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Some methods were added to public API in
5b14129d8d4ad302b4e11df6bd5c7891b75f393c and they should be not part of
the public API.
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- If aliased, then use the aliased attribute name.
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- If aliased, then use the aliased attribute name.
- Fixes #26417.
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I had pointed the messages at the new behavior, not the old.
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callbacks
We pretty frequently get bug reports that "dirty is broken inside of
after callbacks". Intuitively they are correct. You'd expect
`Model.after_save { puts changed? }; model.save` to do the same thing as
`model.save; puts model.changed?`, but it does not.
However, changing this goes much farther than just making the behavior
more intuitive. There are a _ton_ of places inside of AR that can be
drastically simplified with this change. Specifically, autosave
associations, timestamps, touch, counter cache, and just about anything
else in AR that works with callbacks have code to try to avoid "double
save" bugs which we will be able to flat out remove with this change.
We introduce two new sets of methods, both with names that are meant to
be more explicit than dirty. The first set maintains the old behavior,
and their names are meant to center that they are about changes that
occurred during the save that just happened. They are equivalent to
`previous_changes` when called outside of after callbacks, or once the
deprecation cycle moves.
The second set is the new behavior. Their names imply that they are
talking about changes from the database representation. The fact that
this is what we really care about became clear when looking at
`BelongsTo.touch_record` when tests were failing. I'm unsure that this
set of methods should be in the public API. Outside of after callbacks,
they are equivalent to the existing methods on dirty.
Dirty itself is not deprecated, nor are the methods inside of it. They
will only emit the warning when called inside of after callbacks. The
scope of this breakage is pretty large, but the migration path is
simple. Given how much this can improve our codebase, and considering
that it makes our API more intuitive, I think it's worth doing.
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delegation
Following off of https://github.com/rails/rails/issues/15945, I realized that super
needs to be the first thing that is called in an AbstractModel's inherited method.
I was receiving errors within the inherited method of time_zone_conversion, so I tested
locally by moving super to the top of the method declaration. All exceptions went away.
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This reverts commit 671eb742eec77b5c8281ac2a2e3976ef32a6e424.
This is not a change we would like moving forward.
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ActiveModel::Type)
Some code was previously referring to ActiveModel::Type::*. This could
cause issues in the future if any of the ActiveRecord::Type classes were
overridden in the future.
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All indentation was normalized by rubocop auto-correct at 80e66cc4d90bf8c15d1a5f6e3152e90147f00772.
But comments was still kept absolute position. This commit aligns
comments with method definitions for consistency.
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All indentation was normalized by rubocop auto-correct at 80e66cc4d90bf8c15d1a5f6e3152e90147f00772.
But heredocs was still kept absolute position. This commit aligns
heredocs indentation for consistency.
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A few have been left for aesthetic reasons, but have made a pass
and removed most of them.
Note that if the method `foo` returns an array, `foo << 1`
is a regular push, nothing to do with assignments, so
no self required.
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Some case expressions remain, need to think about those ones.
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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kamipo/move_warning_about_composite_primary_key_to_attribute_methods_primary_key
Move the warning about composite primary key to `AttributeMethods::PrimaryKey`
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