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The `#[]` method *used to be* an alias of `#read_attribute`, but since Rails 4
(10f6f90d9d1bbc9598bffea90752fc6bd76904cd), it will raise an exception for
missing attributes. Saying that it is an alias is confusing.
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Add missing `the`
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[ci skip]
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Introduce AR::TransactionSerializationError for transaction serialization failures or deadlocks
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or deadlocks
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update record specified in key
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`#first_or_initialize` does not use attributes to data acquisition.
Therefore, there is a possibility of updating the different record than the one
specified in the key, I think this is not expected behavior.
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Fix ActiveRecord::LogSubscriber edge case
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If an attribute was of the binary type, and also was a Hash, it would
previously not be logged, and instead raise an error saying that
`bytesize` was not defined for the `attribute.value` (a `Hash`).
Now, as is done on 4-2-stable, the attribute's database value is
`bytesize`d, and then logged out to the terminal.
Reproduction script:
```ruby
require 'active_record'
require 'minitest/autorun'
require 'logger'
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)
ActiveRecord::Schema.define do
create_table :posts, force: true do |t|
t.binary :preferences
end
end
class Post < ActiveRecord::Base
serialize :preferences
end
class BugTest < Minitest::Test
def test_24955
Post.create!(preferences: {a: 1})
assert_equal 1, Post.count
end
end
```
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Remove magic comment in generated `schema.rb`
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Rails 5.0 has been dropped Ruby 1.9 support.
I think no need magic comment anymore.
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After PR https://github.com/rails/rails/pull/24844 the documentation for
`#retrieve_connection_pool` was out of date. This commit changes:
- the reference from `@class_to_pool` to `@owner_to_pool`.
- with newer Rubies, `#fetch` isn't significantly slower than `#[]`. Since Rails 5
requires Ruby >= 2.2.2, we can just use `#fetch` here.
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Ruby 2.4 unifies Fixnum and Bignum into Integer: https://bugs.ruby-lang.org/issues/12005
* Forward compat with new unified Integer class in Ruby 2.4+.
* Backward compat with separate Fixnum/Bignum in Ruby 2.2 & 2.3.
* Drops needless Fixnum distinction in docs, preferring Integer.
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Forward ActiveRecord::Relation#count to Enumerable#count if block given
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Keep previous state around for nested calls to #suppress
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If a call to #suppress from the same class occurred inside another #suppress
block, the suppression state would be set to false before the outer block
completes.
This change keeps the previous state around in memory and unwinds it
as the blocks exit.
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Fix bug in JSON deserialization when column default is an empty string
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When `ActiveRecord::Coders::JSON` serialization is used and the default of the column returns `''` it raises the following error:
```
JSON::ParserError: A JSON text must at least contain two octets!
```
If MySQL is running in non-strict mode, it returns an empty string as column default for a text column:
```ruby
def extract_default
if blob_or_text_column?
@default = null || strict ? nil : ''
end
end
```
Since `''` is invalid JSON, there shouldn't be an attempt to parse it, it should be treated like nil.
ActiveRecord::Coders::JSON should behave consistently for all possible non-user-set column default values.
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as value
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Conflicts:
guides/source/configuring.md
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level why we are doing this.
[ci skip]
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The error message that we give today makes this error difficult to debug
if you receive it. I have no clue why we're printing the object ID of
the class (the commit doesn't give context), but I've left it as it was
deliberate.
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When looking for mutation, we compare the serialized version of the
value to the before_type_cast form. `Type::Serialized` was breaking this
contract by passing the already serialized attribute to the subtype's
mutation detection. This never manifested previously, as all mutable
subtypes either didn't do anything in their `serialize` method, or had a
way to detect double serialization (e.g. `is_a?(String)`). However, now
that JSON types can handle string primitives, we need to avoid double
serialization.
Fixes #24993.
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Define ActiveRecord::Attribute::Null#type_cast
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Using ActiveRecord::Base.attribute to declare an attribute with a default value on a model where the attribute is not backed by the database would raise a NotImplementedError when model.save is called.
The error originates from https://github.com/rails/rails/blob/59d252196b36f6afaafd231756d69ea21537cf5d/activerecord/lib/active_record/attribute.rb#L84.
This is called from https://github.com/rails/rails/blob/59d252196b36f6afaafd231756d69ea21537cf5d/activerecord/lib/active_record/attribute.rb#L46 on an ActiveRecord::Attribute::Null object.
This commit corrects the behavior by implementing ActiveRecord::Attribute::Null#type_cast.
With ActiveRecord::Attribute::Null#type_cast defined, ActiveRecord::Attribute::Null#value (https://github.com/rails/rails/blob/59d252196b36f6afaafd231756d69ea21537cf5d/activerecord/lib/active_record/attribute.rb#L173..L175) can be replaced with its super method (https://github.com/rails/rails/blob/59d252196b36f6afaafd231756d69ea21537cf5d/activerecord/lib/active_record/attribute.rb#L36..L40).
fixes #24979
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When calling remove_connection in a subclass, that should not fallback
to the parent, otherwise it will remove the parent connection from the
handler.
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Dont cache the conn_spec_name when empty
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We cannot cache the connection_specification_name when it doesnt
exist. Thats because the parent value could change, and we should keep
failling back to the parent. If we cache that in a children as an ivar,
we would not fallback anymore in the next call, so the children would
not get the new parent spec_name.
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`remove_connection` can reset the `connection_specification_name`, so we
need to to set it after the remove_connection call on
`establish_connection` method.
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Follow up of #24844.
The key of `@owner_to_pool` was changed from `klass.name` to
`spec.name`. By this change "memory leaks in development mode"
will not happen, bacause the equality of string is not changed
by reloading of model files.
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remove_connection
When calling `remove_connection` on a model, we delete the pool so we also
need to reset the `connection_specification_name` so it will fallback to
the parent.
This was the current behavior before rails 5, which will fallback to the
parent connection pool.
[fixes #24959]
Special thanks to @jrafanie for working with me on this fix.
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Should quote `lock_name` to pass to `get_advisory_lock`
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Replacement cycle for readability
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Some slight documentation edits and fixes. Also, run remove unnecessary
`RuntimeError`.
r? @arthurnn
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Refactor connection handler
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[skip ci]
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