| Commit message (Collapse) | Author | Age | Files | Lines |
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This can not expand an array of aggregated objects correctly, and is no
longer used internally since 159b21b5.
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This example was added in abdf546ad6d02ecb95766e73cd3c645a48c954de
but was inconsistent with `composed_of :balance` definition in the
'Customer'.
[Ryuta Kamizono & bogdanvlviv]
[ci skip]
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This reverts commit 755f7b58953c25790eea0574ff8928033ded2d88, reversing
changes made to 35db4603095e8ccc0a92d925a42d4b3d9462580f.
Originally `mapping: %w(balance amount)` is correct mapping example.
Closes #31346.
[Ryuta Kamizono & bogdanvlviv]
[ci skip]
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Allow type_for_attribute(:symbol)
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Closes #31611.
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Follow up of #31724.
If `composed_of` objects have multiple mappings, array predicate handler
can not correctly handle the expanded condition.
We need to handle it like polymorphic association objects.
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Fix not expanded problem when passing an Array object as argument to the where method using composed_of column.
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where method using composed_of column.
Fixes #31723
```
david_balance = customers(:david).balance
Customer.where(balance: [david_balance]).to_sql
# Before: WHERE `customers`.`balance` = NULL
# After : WHERE `customers`.`balance` = 50
```
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Since #29504, mysql2 adapter lost ability to insert zero value on
primary key due to enforce `NO_AUTO_VALUE_ON_ZERO` disabled.
That is for using `DEFAULT` on auto increment column, but we can use
`NULL` instead in that case.
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MySQL supports descending indexes from 8.0.1 onwards:
https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-1.html
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Since #31422, `insert_fixtures` is deprecated.
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It is useless since 90c8be76a7d00475be5ff4db2eeedde5cc936c2d.
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driving table
This is a regression caused by 6beb4de.
In PostgreSQL, ORDER BY expressions must appear in SELECT list when
using DISTINCT.
When using `count(:all)` with eager loading, Active Record enforces
DISTINCT to count the driving table records only. 6beb4de was caused the
regression because `count(:all)` with DISTINCT path no longer removes
ORDER BY.
We need to ignore ORDER BY when DISTINCT is enforced, otherwise not
always generated valid SQL for PostgreSQL.
Fixes #31783.
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Avoid passing unnecessary arguments to relation
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Most of the time the table and predicate_builder
passed to Relation.new are exactly the
arel_table and predicate builder of the
given klass. This uses klass.arel_table
and klass.predicate_builder as the defaults,
so we don't have to pass them in most cases.
This does change the signaure of both Relation and
AssocationRelation. Are we ok with that?
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Only enable verbose_query_logs in Rails server
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Should fix #31688 unless someone can point me to a better way to achieve
this goal. Essentially David's point was that verbose query logging when
enabled in Rails console tends to make things very noisy.
That's especially true if we display absolute paths to callsites which
sadly is still the case when we detect a caller that isn't part of the
Rails application — think gems.
Discussed this with both @matthewd and @rafaelfranca and went back and
forth between enabling if defined?(Rails::Server) or this implementation
and this one makes more sense for now.
Long term I think it'll make sense to let people override this default
disabling in Rails Console because they might want to use the feature
but for now it feels like the correct default behavior.
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It doesn't have to do anything, but it shouldn't fail.
Fixes #31766.
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Postgresql bulk_change_table should flatten procs array
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Build a multi-statement query when inserting fixtures
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- mysql will add a 2 bytes margin to the statement, so given a `max_allowed_packet` set to 1024 bytes, a 1024 bytes fixtures will no be inserted (mysql will throw an error)
- Preventing this by decreasing the max_allowed_packet by 2 bytes when doing the comparison with the actual statement size
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- The `insert_fixtures` method can be optimized by making a single multi statement query for all fixtures having the same connection instead of doing a single query per table
- The previous code was bulk inserting fixtures for a single table, making X query for X fixture files
- This patch builds a single **multi statement query** for every tables. Given a set of 3 fixtures (authors, dogs, computers):
```ruby
# before
%w(authors dogs computers).each do |table|
sql = build_sql(table)
connection.query(sql)
end
# after
sql = build_sql(authors, dogs, computers)
connection.query(sql)
```
- `insert_fixtures` is now deprecated, `insert_fixtures_set` is the new way to go with performance improvement
- My tests were done with an app having more than 700 fixtures, the time it takes to insert all of them was around 15s. Using a single multi statement query, it took on average of 8 seconds
- In order for a multi statement to be executed, mysql needs to be connected with the `MULTI_STATEMENTS` [flag](https://dev.mysql.com/doc/refman/5.7/en/c-api-multiple-queries.html), which is done before inserting the fixtures by reconnecting to da the database with the flag declared. Reconnecting to the database creates some caveats:
1. We loose all open transactions; Inside the original code, when inserting fixtures, a transaction is open. Multple delete statements are [executed](https://github.com/rails/rails/blob/a681eaf22955734c142609961a6d71746cfa0583/activerecord/lib/active_record/fixtures.rb#L566) and finally the fixtures are inserted. The problem with this patch is that we need to open the transaction only after we reconnect to the DB otherwise reconnecting drops the open transaction which doesn't commit all delete statements and inserting fixtures doesn't work since we duplicated them (Primary key duplicate exception)...
- In order to fix this problem, the transaction is now open directly inside the `insert_fixtures` method, right after we reconnect to the db
- As an effect, since the transaction is open inside the `insert_fixtures` method, the DELETE statements need to be executed here since the transaction is open later
2. The same problem happens for the `disable_referential_integrity` since we reconnect, the `FOREIGN_KEY_CHECKS` is reset to the original value
- Same solution as 1. , the disable_referential_integrity can be called after we reconnect to the transaction
3. When the multi statement query is executed, no other queries can be performed until we paginate over the set of results, otherwise mysql throws a "Commands out of sync" [Ref](https://dev.mysql.com/doc/refman/5.7/en/commands-out-of-sync.html)
- Iterating over the set of results until `mysql_client.next_result` is false. [Ref](https://github.com/brianmario/mysql2#multiple-result-sets)
- Removed the `active_record.sql "Fixture delete"` notification, the delete statements are now inside the INSERT's one
- On mysql the `max_allowed_packet` is looked up:
1. Before executing the multi-statements query, we check the packet length of each statements, if the packet is bigger than the max_allowed_packet config, an `ActiveRecordError` is raised
2. Otherwise we concatenate the current sql statement into the previous and so on until the packet is `< max_allowed_packet`
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Support for PostgreSQL foreign tables
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Fixes #31762.
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Fixes issue described in #30399: A default value on the
inheritance column prevented `child.becomes(Parent)` to return
an instance of `Parent` as expected, instead it returns an instance
of the default subclass.
The change was introduced by #17169 and it was meant to affect
initialization, alone. Where `Parent.new` is expected to return
an instance of the default subclass.
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Don't perform unnecessary check with false, just use true/false values
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@active on SQLite adapter.
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Don't update counter cache when through record was not destroyed
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When removing a record from a has many through association, the counter
cache was being updated even if the through record halted the callback
chain and prevented itself from being destroyed.
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#30985 caused `object.save` performance regression since calling
`changes` in `changes_applied` is very slow.
We don't need to call the expensive method in `changes_applied` as long
as `@attributes` is tracked by mutation tracker.
https://gist.github.com/kamipo/1a9f4f3891803b914fc72ede98268aa2
Before:
```
Warming up --------------------------------------
create_string_columns
73.000 i/100ms
Calculating -------------------------------------
create_string_columns
722.256 (± 5.8%) i/s - 3.650k in 5.073031s
```
After:
```
Warming up --------------------------------------
create_string_columns
96.000 i/100ms
Calculating -------------------------------------
create_string_columns
950.224 (± 7.7%) i/s - 4.800k in 5.084837s
```
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koic/enable_autocorrect_for_lint_end_alignment_cop
Enable autocorrect for `Lint/EndAlignment` cop
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### Summary
This PR changes .rubocop.yml.
Regarding the code using `if ... else ... end`, I think the coding style
that Rails expects is as follows.
```ruby
var = if cond
a
else
b
end
```
However, the current .rubocop.yml setting does not offense for the
following code.
```ruby
var = if cond
a
else
b
end
```
I think that the above code expects offense to be warned.
Moreover, the layout by autocorrect is unnatural.
```ruby
var = if cond
a
else
b
end
```
This PR adds a setting to .rubocop.yml to make an offense warning and
autocorrect as expected by the coding style.
And this change also fixes `case ... when ... end` together.
Also this PR itself is an example that arranges the layout using
`rubocop -a`.
### Other Information
Autocorrect of `Lint/EndAlignment` cop is `false` by default.
https://github.com/bbatsov/rubocop/blob/v0.51.0/config/default.yml#L1443
This PR changes this value to `true`.
Also this PR has changed it together as it is necessary to enable
`Layout/ElseAlignment` cop to make this behavior.
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This was added in #31727, but it is unused.
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This slipped in as part of a2827ec9811b5012e8e366011fd44c8eb53fc714.
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Rails has some support for multiple databases but it can be hard to
handle migrations with those. The easiest way to implement multiple
databases is to contain migrations into their own folder ("db/migrate"
for the primary db and "db/seconddb_migrate" for the second db). Without
this you would need to write code that allowed you to switch connections
in migrations. I can tell you from experience that is not a fun way to
implement multiple databases.
This refactoring is a pre-requisite for implementing other features
related to parallel testing and improved handling for multiple
databases.
The refactoring here moves the class methods from the `Migrator` class
into it's own new class `MigrationContext`. The goal was to move the
`migrations_paths` method off of the `Migrator` class and onto the
connection. This allows users to do the following in their
`database.yml`:
```
development:
adapter: mysql2
username: root
password:
development_seconddb:
adapter: mysql2
username: root
password:
migrations_paths: "db/second_db_migrate"
```
Migrations for the `seconddb` can now be store in the
`db/second_db_migrate` directory. Migrations for the primary database
are stored in `db/migrate`".
The refactoring here drastically reduces the internal API for migrations
since we don't need to pass `migrations_paths` around to every single
method. Additionally this change does not require any Rails applications
to make changes unless they want to use the new public API. All of the
class methods from the `Migrator` class were `nodoc`'d except for the
`migrations_paths` and `migrations_path` getter/setters respectively.
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Currently `object.save` will unfreeze the object, due to
`changes_applied` replaces frozen `@attributes` to new `@attributes`.
Since originally destroyed objects are not allowed to be mutated, `save`
and `save!` should not return success in that case.
Fixes #28563.
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If `collation` is given without `charset`, it may generate invalid SQL.
For example `create_database(:matt_aimonetti, collation: "utf8mb4_bin")`:
```
> CREATE DATABASE `matt_aimonetti` DEFAULT CHARACTER SET `utf8` COLLATE `utf8mb4_bin`;
ERROR 1253 (42000): COLLATION 'utf8mb4_bin' is not valid for CHARACTER SET 'utf8'
```
In MySQL, charset is used to find the default collation. If `collation`
is given explicitly, it is not necessary to give extra charset.
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Allow unscoping of left_outer_joins
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