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* Make discard safe when it follows a manual disconnectMatthew Draper2018-01-251-1/+1
| | | | | | It doesn't have to do anything, but it shouldn't fail. Fixes #31766.
* Merge pull request #31773 from dinahshi/postgresql_bulk_patchMatthew Draper2018-01-241-1/+1
|\ | | | | Postgresql bulk_change_table should flatten procs array
| * Use concat to join procs arrays in bulk_change_tableDinah Shi2018-01-231-1/+1
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* | Merge pull request #31422 from Edouard-chin/multistatement-fixturesMatthew Draper2018-01-244-55/+139
|\ \ | | | | | | Build a multi-statement query when inserting fixtures
| * | Allow a 2 bytes margin:Edouard CHIN2018-01-231-1/+2
| | | | | | | | | | | | | | | - 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
| * | Combine delete and insert statements in the same queryEdouard CHIN2018-01-222-13/+10
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| * | Build a multi-statement query when inserting fixtures:Edouard CHIN2018-01-224-55/+141
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - 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`
* | | Merge pull request #31549 from fatkodima/foreign_tablesRyuta Kamizono2018-01-232-1/+15
|\ \ \ | | | | | | | | Support for PostgreSQL foreign tables
| * | | Support for PostgreSQL foreign tablesfatkodima2018-01-222-1/+15
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* | | | Fix building has_one through recordRyuta Kamizono2018-01-233-14/+10
|/ / / | | | | | | | | | Fixes #31762.
* | | Ignores a default subclass when `becomes(Parent)`Leonel Galan2018-01-221-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | | Merge pull request #24964 from vipulnsward/true-falseMatthew Draper2018-01-231-2/+2
|\ \ \ | | | | | | | | Don't perform unnecessary check with false, just use true/false values
| * | | Dont perform unnecessary check with false, just use true/false values for ↵Vipul A M2016-05-111-2/+2
| | | | | | | | | | | | | | | | @active on SQLite adapter.
* | | | Merge pull request #31710 from eugeneius/indestructible_through_recordRyuta Kamizono2018-01-221-1/+1
|\ \ \ \ | | | | | | | | | | Don't update counter cache when through record was not destroyed
| * | | | Don't update counter cache when through record was not destroyedEugene Kenny2018-01-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | | | | PERF: Recover `changes_applied` performance (#31698)Ryuta Kamizono2018-01-222-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | #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 ```
* | | | | Merge pull request #31732 from ↵Matthew Draper2018-01-191-1/+1
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | koic/enable_autocorrect_for_lint_end_alignment_cop Enable autocorrect for `Lint/EndAlignment` cop
| * | | | | Enable autocorrect for `Lint/EndAlignment` copKoichi ITO2018-01-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ### 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.
* | | | | | Remove unused `connection` argument from `MigrationContext#current_version`Ryuta Kamizono2018-01-191-3/+3
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* | | | | | Remove unused `migration_context` in `DatabaseTasks`Ryuta Kamizono2018-01-191-4/+0
| |/ / / / |/| | | | | | | | | | | | | | This was added in #31727, but it is unused.
* | | | | Use selected_migrations if block_given?oz2018-01-181-1/+1
| | | | | | | | | | | | | | | | | | | | This slipped in as part of a2827ec9811b5012e8e366011fd44c8eb53fc714.
* | | | | Refactor migration to move migrations paths to connectioneileencodes2018-01-189-140/+168
|/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | | | Fix relation merger issue with `left_outer_joins`Mehmet Emin INAC2018-01-152-1/+27
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* | | | Don't allow destroyed object mutation after `save` or `save!` is calledRyuta Kamizono2018-01-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | | | `create_database` should not add default charset when `collation` is givenRyuta Kamizono2018-01-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | | | Merge pull request #28313 from sandrew/masterRyuta Kamizono2018-01-151-2/+3
|\ \ \ \ | | | | | | | | | | | | | | | Allow unscoping of left_outer_joins
| * | | | Allow unscoping of left_outer_joinsAndrei Shaidurov2017-03-061-1/+1
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* | | | | Don't need to pass `manager` to `convert_join_strings_to_ast`Ryuta Kamizono2018-01-141-2/+2
| | | | | | | | | | | | | | | | | | | | Because `Relation` already have Arel `table`.
* | | | | Don't pass garbage args to alias trackerRyuta Kamizono2018-01-142-11/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a complete fix to #30995. Originally alias tracker will only track table aliases on `Arel::Nodes::Join`, other args are ignored. Since c5ab6e5, parent aliases hash will be passed then it caused the regression #30995. It is enough to pass list of `Arel::Nodes::Join` simply, not need to pass garbage args which will be ignored.
* | | | | Merge pull request #31671 from larskanis/pg-1.0Rafael Mendonça França2018-01-111-1/+1
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | PostgreSQL: Allow pg-1.0 gem to be used with ActiveRecord
| * | | | | PostgreSQL: Allow pg-1.0 gem to be used with ActiveRecordLars Kanis2018-01-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pg-1.0.0 is just released and most Gemfiles don't restrict it's version. But the version is checked when connecting to the database, which leads to the following error: Gem::LoadError: can't activate pg (~> 0.18), already activated pg-1.0.0 See also this pg issue: https://bitbucket.org/ged/ruby-pg/issues/270/pg-100-x64-mingw32-rails-server-not-start Preparation for pg-1.0 was done in commit f28a331023fab, but the pg version constraint was not yet relaxed.
* | | | | | Merge pull request #23146 from piotrj/issue_18424Ryuta Kamizono2018-01-111-0/+1
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | When deleting through records, take into account association conditions
| * | | | | | When deleting through records, take into account association conditionsPiotr Jakubowski2016-05-041-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes #18424. When deleting through records, it didn't take into account the conditions that may have been affecting join model table, but was defined in association definition.
* | | | | | | Remove the deprecated `:conditions` option in ↵Ryuta Kamizono2018-01-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `INVALID_AUTOMATIC_INVERSE_OPTIONS` This option was moved into active_record_deprecated_finders in ac4d101.
* | | | | | | Use `apply_join_dependency` instead of meaningless named ↵Ryuta Kamizono2018-01-112-26/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `find_with_associations` `find_with_associations` is meaningless name in this point since it just contain `construct_join_dependency` and `apply_join_dependency`, does not contain finding anything. If `apply_join_dependency` returns `relation` and `join_dependency` then `find_with_associations` is no longer needed.
* | | | | | | Make `relation.exists?` more performant when using eager loadingRyuta Kamizono2018-01-111-3/+4
| |/ / / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | `relation.exists?` just wants to know if there is a result or not, does not need the exact records matched. Therefore, an intermediate SELECT query for eager loading is not necessary.
* | | | | | [ci skip] setting :inverse_of works with :as, :through and :polymorphic ↵Bart de Water2018-01-101-12/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | options, and is needed for bi-directionality with a scope [ci skip] Remove :conditions opion from association basics guide This got replaced by scopes.
* | | | | | Fix `stale_state` for nested `has_many :through` associationsRyuta Kamizono2018-01-102-10/+13
| | | | | | | | | | | | | | | | | | | | | | | | Need reloading when through record has replaced.
* | | | | | Merge pull request #16314 from ↵Ryuta Kamizono2018-01-102-1/+9
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | zoltankiss/allow-nested-has-many-associations-on-unpersisted-parent-instances fix nested `has many :through` associations on unpersisted parent instances
| * | | | | | Fix nested `has many :through` associations on unpersisted instancesZoltan Kiss2015-03-262-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes: #16313
* | | | | | | Bring back passing single record support for `Preloader`Ryuta Kamizono2018-01-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I removed redundant `Array.wrap(records)` since `Preloader` is nodoc class and Active Record always pass `records` as an array to `Preloader`. But if users relies on that behavior, it is not worth dropping its behavior. Fixes #31661.
* | | | | | | resolve inconsistencies between first and to_a.first with limitBrian Christian2018-01-091-1/+5
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* | | | | | | Fix deleting through records when using has_many through with `source_type`Ryuta Kamizono2018-01-081-8/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently deleting through records doesn't respect `source_type`. It should not be ignored in that case. Related #23209. Fixes #24116.
* | | | | | | Simply use `scope.delete_all` instead of constructing delete managerRyuta Kamizono2018-01-071-8/+1
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* | | | | | | Make `find_nth_from_last` more performant when using reversible orderRyuta Kamizono2018-01-071-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can use `relation.last(index)[-index]` instead of loading all records when using reversible order because `last` will call `reverse_order`.
* | | | | | | Fix `last` with `offset` to behave consistently with loaded relationRyuta Kamizono2018-01-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently `last` with `offset` behaves incorrectly because `offset` can not be reversed like `limit`. Therefore, `offset` should also be handled like `limit`.
* | | | | | | Fix `pluck` with eager loading to respect `offset`Ryuta Kamizono2018-01-071-1/+1
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* | | | | | | Revert commit 4ec5b0d6b4d8a57e034b1014942356e95caf47aa in favor of #28379Ryuta Kamizono2018-01-071-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 4ec5b0d was for fixing the regression #18787, but #28379 fixes #18787 as well. So 4ec5b0d is no longer necessary.
* | | | | | | Remove passing argument to singular and collection association readersRyuta Kamizono2018-01-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Follow up of 09cac8c67afdc4b2a1c6ae07931ddc082629b277.
* | | | | | | Partial revert the changing default value of `readonly_value`Ryuta Kamizono2018-01-051-13/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a partial revert of #26182. There is no reason to change the default value.
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