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We were ignoring the `default_value?` escape clause in the serialized
type, which caused the default value to always be treated as changed.
Fixes #18169
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Fix connection leak when a thread checks in additional connections.
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The code in `ConnectionPool#release` assumed that a single thread only
ever holds a single connection, and thus that releasing a connection
only requires the owning thread_id.
There is a trivial counterexample to this assumption: code that checks
out additional connections from the pool in the same thread. For
instance:
connection_1 = ActiveRecord::Base.connection
connection_2 = ActiveRecord::Base.connection_pool.checkout
ActiveRecord::Base.connection_pool.checkin(connection_2)
connection_3 = ActiveRecord::Base.connection
At this point, connection_1 has been removed from the
`@reserved_connections` hash, causing a NEW connection to be returned as
connection_3 and the loss of any tracking info on connection_1. As long
as the thread in this example lives, connection_1 will be inaccessible
and un-reapable. If this block of code runs more times than the size of
the connection pool in a single thread, every subsequent connection
attempt will timeout, as all of the available connections have been
leaked.
Reverts parts of 9e457a8654fa89fe329719f88ae3679aefb21e56 and
essentially all of 4367d2f05cbeda855820e25a08353d4b7b3457ac
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Conflicts:
activerecord/CHANGELOG.md
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This bug occurs when an attribute of an ActiveRecord model is an
ActiveRecord::Type::Integer type or a ActiveRecord::Type::Decimal type (or any
other type that includes the ActiveRecord::Type::Numeric module. When the value
of the attribute is negative and is set to the same negative value, it is marked
as changed.
Take the following example of a Person model with the integer attribute age:
class Person < ActiveRecord::Base
# age :integer(4)
end
The following will produce the error:
person = Person.new(age: -1)
person.age = -1
person.changes
=> { "age" => [-1, -1] }
person.age_changed?
=> true
The problematic line is here:
module ActiveRecord
module Type
module Numeric
...
def non_numeric_string?(value)
# 'wibble'.to_i will give zero, we want to make sure
# that we aren't marking int zero to string zero as
# changed.
value.to_s !~ /\A\d+\.?\d*\z/
end
end
end
end
The regex match doesn't accept numbers with a leading '-'.
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If there is a method defined such as `find_and_do_stuff(id)`, which then
gets called on an association, we will perform statement caching and the
parent ID will not change on subsequent calls.
Fixes #18117
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Calling `changed_attributes` will ultimately check if every mutable
attribute has changed in place. Since this gets called whenever an
attribute is assigned, it's extremely slow. Instead, we can avoid this
calculation until we actually need it.
Fixes #18029
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PG will warn without it, but mysql2 errors out.
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This has the same comments as 9af90ffa00ba35bdee888e3e1ab775ba0bdbe72c,
however it affects the `add_reference` method, and `t.references` in the
context of a `change_table` block.
There is a lot of duplication of code between creating and updating
tables. We should re-evaluate the structure of this code from a high
level so changes like this don't need to be made in two places. (Note to
self)
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Rather than having to do:
create_table :posts do |t|
t.references :user
end
add_foreign_key :posts, :users
You can instead do:
create_table :posts do |t|
t.references :user, foreign_key: true
end
Similar to the `index` option, you can also pass a hash. This will be
passed as the options to `add_foreign_key`. e.g.:
create_table :posts do |t|
t.references :user, foreign_key: { primary_key: :other_id }
end
is equivalent to
create_table :posts do |t|
t.references :user
end
add_foreign_key :posts, :users, primary_key: :other_id
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If the test is interrupted in a way that the teardown block fails to
run, the tests will fail to run until the table is removed manually
without this option.
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PG doesn't register it's types using the `int(4)` format that others do.
As such, if we alias `int8` to the other integer types, the range
information is lost. This is fixed by simply registering it separately.
The other option (which I specifically chose to avoid) is to pass the
information of the original type that was being aliased as an argument.
I'd rather avoid that, since an alias should truly be treated the same.
If we need different behavior for a different type, we should explicitly
register it with that, and not have a conditional based on aliasing.
Fixes #18144
[Sean Griffin & ysbaddaden]
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Fixes #18122
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Apparently PG does not validate against RFC 4122. The intent of the original
patch is just to protect against PG errors (which potentially breaks txns, etc)
because of bad user input, so we shouldn't try any harder than PG itself.
Closes #17931
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In the case of serialized columns, we would expect the unserialized
value as input, not the serialized value. The original issue which made
this distinction, #14163, introduced a bug. If you passed serialized
input to the method, it would double serialize when it was sent to the
database. You would see the wrong input upon reloading, or get an error
if you had a specific type on the serialized column.
To put it another way, `update_column` is a special case of
`update_all`, which would take `['a']` and not `['a'].to_yaml`, but you
would not pass data from `params` to it.
Fixes #18037
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https://github.com/rails/rails/commit/39542fba54328ca048fb75a5d5b37f8e1d4c1f37#commitcomment-8938379
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Fix ProtocolViolation/bind message for polymorphic + pluck or group+calc
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Add foreign_type option for polymorphic has_one and has_many.
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To be possible to use a custom column name to save/read the polymorphic
associated type in a has_many or has_one polymorphic association, now users
can use the option :foreign_type to inform in what column the associated object
type will be saved.
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Remove unused "Developer" fixtures from tests
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The `RecursiveCallbackDeveloper` and `ImmutableMethodDeveloper` classes
are not used anymore in tests, and neither is the `@cancelled` variable.
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The test added in 42418cfc94d1356d35d28d786f63e7fab9406ad6 wasn't
actually testing anything, since the bug was with TZ aware attributes
only.
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PostgreSQL for example, allows infinity as a valid value for date time
columns. The PG type has explicit handling for that case. However, time
zone conversion will end up trampling that handling. Unfortunately, we
can't call super and then convert time zones.
However, if we get back nil from `.in_time_zone`, it's something we
didn't expect so we can let the superclass handle it.
Fixes #17971
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`freeze` will ultimately end up freezing the `AttributeSet`, which in
turn freezes its `@attributes` hash. However, we actually insert a
special object to lazily instantiate the values of the hash on demand.
When it does need to actually instantiate all of them for iteration (the
only case is `ActiveRecord::Base#attributes`, which calls
`AttributeSet#to_h`), it will set an instance variable as a performance
optimization
Since it's just an optimization for subsequent calls, and that method
being called at all is a very uncommon case, we can just leave the ivar
alone if we're frozen, as opposed to coming up with some overly
complicated mechanism for freezing which allows us to continue to modify
ourselves.
Fixes #17960
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The user is able to pass PG string literals in 4.1, and have it
converted to an array. This is also possible in 4.2, but it would remain
in string form until saving and reloading, which breaks our
`attr = save.reload.attr` contract. I think we should deprecate this in
5.0, and only allow array input from user sources. However, this
currently constitutes a breaking change to public API that did not go
through a deprecation cycle.
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The validation added in 5a3dc8092d19c816b0b1203945639cb91d065847 will
reject values for the `:on` option for after_commit and after_rollback
callbacks that are string values like `"create"`.
However, the error message says ":on conditions for after_commit and
after_rollback callbacks have to be one of create,destroy,update". That
looks like a string value *would* be valid.
This commit changes the error message to say ":on conditions for
after_commit and after_rollback callbacks have to be one of [:create,
:destroy, :update]", making it clearer that symbols are required.
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If the tests are interupted and the teardown block doesn't run, the
developer needs to delete these manually in order to be able to run the
tests again.
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The type registration was simply looking for the OID, and eagerly
fetching/constructing the sub type when it was registered. However,
numeric types have additional parameters which are extracted from the
actual SQL string of the type during lookup, and can have their behavior
change based on the result.
We simply need to use the block form of registration, and look up the
subtype lazily instead.
Fixes #17935
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Remove deprecated behavior allowing nested arrays as query values
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Active Record defines `attribute_method_suffix :?`. That suffix will
match any predicate method when the lookup occurs in Active Model. This
will make it incorrectly decide that `id_changed?` should not exist,
because it attempts to determine if the attribute `id_changed` is
present, rather than `id` with the `_changed?` suffix. Instead, we will
look for any correct match.
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Users should pass strings to queries instead of classes
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When running the following migration:
change_table(:table_name) { |t| t/timestamps }
The following error was produced:
wrong number of arguments (2 for 1) .... /connection_adapters/abstract/schema_statements.rb:851:in `remove_timestamps'
This is due to `arguments` containing an empty hash as its second
argument.
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Fix "nonexistent" typo in tests
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This ensures that we're handling all forms of nested tables the same way.
We're aware that the `convert_dot_notation_to_hash` method will cause a
performance hit, and we intend to come back to it once we've refactored some of
the surrounding code.
[Melissa Xie & Melanie Gilman]
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This commit fixes the following case.
User.where(User.arel_table[:created_at].lteq(1.year.ago)).unscope(where :created_at)
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