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* Basic API for connection switchingEileen Uchitelle2018-10-101-0/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This PR adds the ability to 1) connect to multiple databases in a model, and 2) switch between those connections using a block. To connect a model to a set of databases for writing and reading use the following API. This API supercedes `establish_connection`. The `writing` and `reading` keys represent handler / role names and `animals` and `animals_replica` represents the database key to look up the configuration hash from. ``` class AnimalsBase < ApplicationRecord connects_to database: { writing: :animals, reading: :animals_replica } end ``` Inside the application - outside the model declaration - we can switch connections with a block call to `connected_to`. If we want to connect to a db that isn't default (ie readonly_slow) we can connect like this: Outside the model we may want to connect to a new database (one that is not in the default writing/reading set) - for example a slow replica for making slow queries. To do this we have the `connected_to` method that takes a `database` hash that matches the signature of `connects_to`. The `connected_to` method also takes a block. ``` AcitveRecord::Base.connected_to(database: { slow_readonly: :primary_replica_slow }) do ModelInPrimary.do_something_thats_slow end ``` For models that are already loaded and connections that are already connected, `connected_to` doesn't need to pass in a `database` because you may want to run queries against multiple databases using a specific role/handler. In this case `connected_to` can take a `role` and use that to swap on the connection passed. This simplies queries - and matches how we do it in GitHub. Once you're connected to the database you don't need to re-connect, we assume the connection is in the pool and simply pass the handler we'd like to swap on. ``` ActiveRecord::Base.connected_to(role: :reading) do Dog.read_something_from_dog ModelInPrimary.do_something_from_model_in_primary end ```
* Raise on invalid definition valuesAlberto Almagro2018-10-101-0/+11
| | | | | | | | | When defining a Hash enum it can be easy to use [] instead of {}. This commit checks that only valid definition values are provided, those can be a Hash, an array of Symbols or an array of Strings. Otherwise it raises an ArgumentError. Fixes #33961
* Clear QueryCache when reloading associationsChristophe Maximin2018-10-101-0/+17
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* Merge pull request #23593 from meinac/add_index_option_for_change_tableRyuta Kamizono2018-10-011-0/+12
|\ | | | | | | index option added for change_table migrations
| * Index option added for change_table migrationsMehmet Emin INAC2018-09-221-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case if we want to add a column into the existing table with index on it, we have to add column and index in two seperate lines. With this feature we don't need to write an extra line to add index for column. We can just use `index` option. Old behaviour in action: ``` change_table(:languages) do |t| t.string :country_code t.index: :country_code end ``` New behaviour in action: ``` change_table(:languages) do |t| t.string :country_code, index: true end ``` Exactly same behaviour is already exist for `create_table` migrations.
* | Fix `transaction` reverting for migrationsfatkodima2018-09-261-0/+7
| | | | | | | | [fatkodima & David Verhasselt]
* | Raise an error when loading all fixtures from nil fixture_pathGannon McGibbon2018-09-261-0/+4
| | | | | | | | [Gannon McGibbon + Max Albrecht]
* | Stringify database configurationsGannon McGibbon2018-09-241-0/+4
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* Merge pull request #33913 from kamipo/counter_cacheRyuta Kamizono2018-09-201-0/+6
|\ | | | | | | Don't update counter cache unless the record is actually saved
| * Don't update counter cache unless the record is actually savedRyuta Kamizono2018-09-191-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a 4th attempt to make counter cache transactional completely. Past attempts: #9236, #14849, #23357. All existing counter cache issues (increment/decrement twice, lost increment) are caused due to updating counter cache on the outside of the record saving transaction by assigning belongs_to record, even though assigning that doesn't cause the record saving. We have the `@_after_replace_counter_called` guard condition to mitigate double increment/decrement issues, but we can't completely prevent that inconsistency as long as updating counter cache on the outside of the transaction, since saving the record is not always happened after that. We already have handling counter cache after create/update/destroy, https://github.com/rails/rails/blob/1b90f614b1b3d06b7f02a8b9ea6cd84f15d58643/activerecord/lib/active_record/counter_cache.rb#L162-L189 https://github.com/rails/rails/blob/1b90f614b1b3d06b7f02a8b9ea6cd84f15d58643/activerecord/lib/active_record/associations/builder/belongs_to.rb#L33-L59 so just removing assigning logic on the belongs_to association makes counter cache transactional completely. Closes #14849. Closes #23357. Closes #31493. Closes #31494. Closes #32372. Closes #33113. Closes #33117 Closes #33129. Closes #33458.
* | Deprecate ActiveRecord::Result#to_hash in favor of #to_aKevin Cheng2018-09-181-0/+4
|/ | | | | | | method returns an array of hashes, not a hash e.g. Hash.try_convert(result) calls #to_hash and raises a TypeError [Gannon McGibbon + Kevin Cheng]
* SQLite3: Support multiple args function for expression indexesRyuta Kamizono2018-09-141-1/+1
| | | | | Follow up #33874. Related #23393.
* SQLite3 adapter supports expression indexesgkemmey2018-09-131-0/+12
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* Merge pull request #33378 from numbata/subclass-redefine-autosave-callbacksRafael Mendonça França2018-09-131-0/+6
|\ | | | | | | Allow subclasses to redefine autosave callbacks for associated records
| * Allow subclasses to redefine autosave callbacks for associated recordsAndrey Subbota2018-07-271-0/+6
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* | Drop MySQL 5.1 supportYasuo Honda2018-09-131-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * MySQL 5.1 does not support `utf8mb4` character set * MySQL 5.1 had been already EOLed on Dec 2013 https://www.mysql.com/support/eol-notice.html > Per Oracle's Lifetime Support policy, as of December 31, 2013, MySQL 5.1 > is covered under Oracle Sustaining Support. * MySQL 5.5.8 is the first General Availability of MySQL 5.5 https://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-8.html
* | Add mention about `ActiveRecord::Base::filter_attributes` to the changelog entrybogdanvlviv2018-09-121-2/+7
| | | | | | | | | | Also remove `# :nodoc:` for `ActiveRecord::Core::ClassMethods` in order to show non-nodoc methods in that module on the api docs http://edgeapi.rubyonrails.org
* | Use utf8mb4 character set by default for MySQL database (#33608)Yasuo Honda2018-09-111-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Use utf8mb4 character set by default `utf8mb4` character set supports supplementary characters including emoji. `utf8` character set with 3-Byte encoding is not enough to support them. There was a downside of 4-Byte length character set with MySQL 5.5 and 5.6: "ERROR 1071 (42000): Specified key was too long; max key length is 767 bytes" for Rails string data type which is mapped to varchar(255) type. MySQL 5.7 supports 3072 byte key prefix length by default. * Remove `DEFAULT COLLATE` from Active Record unit test databases There should be no "one size fits all" collation in MySQL 5.7. Let MySQL server choose the default collation for Active Record unit test databases. Users can choose their best collation for their databases by setting `options[:collation]` based on their requirements. * InnoDB FULLTEXT indexes support since MySQL 5.6 it does not have to use MyISAM storage engine whose maximum key length is 1000 bytes. Using MyISAM storag engine with utf8mb4 character set would cause "Specified key was too long; max key length is 1000 bytes" https://dev.mysql.com/doc/refman/5.6/en/innodb-fulltext-index.html * References "10.9.1 The utf8mb4 Character Set (4-Byte UTF-8 Unicode Encoding)" https://dev.mysql.com/doc/refman/5.7/en/charset-unicode-utf8mb4.html "10.9.2 The utf8mb3 Character Set (3-Byte UTF-8 Unicode Encoding)" https://dev.mysql.com/doc/refman/5.7/en/charset-unicode-utf8.html "14.8.1.7 Limits on InnoDB Tables" https://dev.mysql.com/doc/refman/5.7/en/innodb-restrictions.html > If innodb_large_prefix is enabled (the default), the index key prefix limit is 3072 bytes > for InnoDB tables that use DYNAMIC or COMPRESSED row format. * CI against MySQL 5.7 Followed this instruction and changed root password to empty string. https://docs.travis-ci.com/user/database-setup/#MySQL-57 * The recommended minimum version of MySQL is 5.7.9 to support utf8mb4 character set and `innodb_default_row_format` MySQL 5.7.9 introduces `innodb_default_row_format` to support 3072 byte length index by default. Users do not have to change MySQL database configuration to support Rails string type. https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_default_row_format https://dev.mysql.com/doc/refman/5.7/en/innodb-restrictions.html > If innodb_large_prefix is enabled (the default), > the index key prefix limit is 3072 bytes for InnoDB tables that use DYNAMIC or COMPRESSED row format. * The recommended minimum version of MariaDB is 10.2.2 MariaDB 10.2.2 is the first version of MariaDB supporting `innodb_default_row_format` Also MariaDB says "MySQL 5.7 is compatible with MariaDB 10.2". - innodb_default_row_format https://mariadb.com/kb/en/library/xtradbinnodb-server-system-variables/#innodb_default_row_format - "MariaDB versus MySQL - Compatibility" https://mariadb.com/kb/en/library/mariadb-vs-mysql-compatibility/ > MySQL 5.7 is compatible with MariaDB 10.2 - "Supported Character Sets and Collations" https://mariadb.com/kb/en/library/supported-character-sets-and-collations/
* | Fixes #33610Darwin D Wu2018-09-111-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | In order to avoid double assignments of nested_attributes for `has_many` relations during record initialization, nested_attributes in `create_with` should not be passed into `klass.new` and have them populate during `initialize_internals_callback` with scope attributes. However, `create_with` keys should always have precedence over where clauses, so if there are same keys in both `create_with` and `where_values_hash`, the value in `create_with` should be the one that's used.
* | Update CHANGELOG.mdNick Stanish2018-09-101-1/+1
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* | Fix explanation of `ActiveRecord::Base.configurations.configs_for` in the ↵bogdanvlviv2018-09-091-6/+7
| | | | | | | | | | | | | | CHANGELOG Since #33770 `#configs_for` changed method signature and it isn't supposed to work with a passed block.
* | Configuration item `config.filter_parameters` could also filter out ↵Zhang Kang2018-09-071-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sensitive value of database column when call `#inspect` * Why Some sensitive data will be exposed in log accidentally by calling `#inspect`, e.g. ```ruby @account = Account.find params[:id] payload = { account: @account } logger.info "payload will be #{ payload }" ``` All the information of `@account` will be exposed in log. * Solution Add a class attribute filter_attributes to specify which values of columns shouldn't be exposed. This attribute equals to `Rails.application.config.filter_parameters` by default. ```ruby Rails.application.config.filter_parameters += [:credit_card_number] Account.last.insepct # => #<Account id: 123, credit_card_number: [FILTERED] ...> ```
* | Formatting CHANGELOGs [ci skip]Ryuta Kamizono2018-09-071-4/+4
| | | | | | | | Fixing code block rendering, indentation, backticks, etc.
* | Deprecate most methods which were never used in `DatabaseLimits`Ryuta Kamizono2018-09-051-0/+6
| | | | | | | | | | | | | | | | | | `DatabaseLimits` and those methods were introduced at 3809c80, but most methods were never used and never tested from the beginning (except `table_alias_length`, `index_name_length`, and `in_clause_length` (since 66c09372)). There is no reason to maintain unused those methods for about 8 years.
* | Refactors Active Record connection managementEileen Uchitelle2018-08-301-0/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While the three-tier config makes it easier to define databases for multiple database applications, it quickly became clear to offer full support for multiple databases we need to change the way the connections hash was handled. A three-tier config means that when Rails needed to choose a default configuration (in the case a user doesn't ask for a specific configuration) it wasn't clear to Rails which the default was. I [bandaid fixed this so the rake tasks could work](#32271) but that fix wasn't correct because it actually doubled up the configuration hashes. Instead of attemping to manipulate the hashes @tenderlove and I decided that it made more sense if we converted the hashes to objects so we can easily ask those object questions. In a three tier config like this: ``` development: primary: database: "my_primary_db" animals: database; "my_animals_db" ``` We end up with an object like this: ``` @configurations=[ #<ActiveRecord::DatabaseConfigurations::HashConfig:0x00007fd1acbded10 @env_name="development",@spec_name="primary", @config={"adapter"=>"sqlite3", "database"=>"db/development.sqlite3"}>, #<ActiveRecord::DatabaseConfigurations::HashConfig:0x00007fd1acbdea90 @env_name="development",@spec_name="animals", @config={"adapter"=>"sqlite3", "database"=>"db/development.sqlite3"}> ]> ``` The configurations setter takes the database configuration set by your application and turns them into an `ActiveRecord::DatabaseConfigurations` object that has one getter - `@configurations` which is an array of all the database objects. The configurations getter returns this object by default since it acts like a hash in most of the cases we need. For example if you need to access the default `development` database we can simply request it as we did before: ``` ActiveRecord::Base.configurations["development"] ``` This will return primary development database configuration hash: ``` { "database" => "my_primary_db" } ``` Internally all of Active Record has been converted to use the new objects. I've built this to be backwards compatible but allow for accessing the hash if needed for a deprecation period. To get the original hash instead of the object you can either add `to_h` on the configurations call or pass `legacy: true` to `configurations. ``` ActiveRecord::Base.configurations.to_h => { "development => { "database" => "my_primary_db" } } ActiveRecord::Base.configurations(legacy: true) => { "development => { "database" => "my_primary_db" } } ``` The new configurations object allows us to iterate over the Active Record configurations without losing the known environment or specification name for that configuration. You can also select all the configs for an env or env and spec. With this we can always ask any object what environment it belongs to: ``` db_configs = ActiveRecord::Base.configurations.configurations_for("development") => #<ActiveRecord::DatabaseConfigurations:0x00007fd1acbdf800 @configurations=[ #<ActiveRecord::DatabaseConfigurations::HashConfig:0x00007fd1acbded10 @env_name="development",@spec_name="primary", @config={"adapter"=>"sqlite3", "database"=>"db/development.sqlite3"}>, #<ActiveRecord::DatabaseConfigurations::HashConfig:0x00007fd1acbdea90 @env_name="development",@spec_name="animals", @config={"adapter"=>"sqlite3", "database"=>"db/development.sqlite3"}> ]> db_config.env_name => "development" db_config.spec_name => "primary" db_config.config => { "adapter"=>"sqlite3", "database"=>"db/development.sqlite3" } ``` The configurations object is more flexible than the configurations hash and will allow us to build on top of the connection management in order to add support for primary/replica connections, sharding, and constructing queries for associations that live in multiple databases.
* | Add database configuration to disable advisory locks.Guo Xiang Tan2018-08-221-0/+10
| | | | | | | | https://github.com/rails/rails/issues/31190
* | Merge pull request #33585 from yahonda/diag33520Ryuta Kamizono2018-08-161-0/+4
|\ \ | | | | | | | | | SQLite3 adapter `alter_table` method restores foreign keys
| * | SQLite3 adapter `alter_table` method restores foreign keysYasuo Honda2018-08-111-0/+4
| | | | | | | | | | | | Related to #33520
* | | Follow up #33530bogdanvlviv2018-08-151-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | - Move changelog entry of #33530 up in order to preserve the chronology since we always add new entries on the top of a changelog file. - Clarify the changelog entry - Clarify the docs of remove_foreign_key - Ensure reversible of `remove_foreign_key` with `:primary_key` and `:to_table` options.
* | | Allow `to_table` in `invert_remove_foreign_key`Rich2018-08-141-0/+4
|/ / | | | | | | | | | | | | | | | | | | | | | | remove_foreign_key supports - remove_foreign_key :accounts, :branches - remove_foreign_key :accounts, to_table: :branches but the second one is not reversible. This branch is to fix and allow second one to be reversible. [Nikolay Epifanov, Rich Chen]
* / Revert "Merge pull request #24131 from brchristian/limit_and_primary_key"Ryuta Kamizono2018-08-011-6/+0
|/ | | | | | | | | | This reverts commit d162188dd662a7d9f62ba8431474f50bc35e3e93, reversing changes made to 3576782888c307e3e192c44e332b957cd1174128. Reason: #24131 conflicts the #5153's default order contract, it means that existing apps would be broken by that change. We don't want to break existing apps without a deprecation cycle.
* CHANGELOG entryBrian Christian2018-07-191-0/+6
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* Add missing load config dependency to `rake db:seed`Tobias Bielohlawek2018-07-101-0/+5
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* Merge pull request #33280 from nkondratyev/fix/mysql-time-default-valuesRyuta Kamizono2018-07-091-0/+4
|\ | | | | | | Fix default value for mysql time types with specified precision
| * Fix default value for mysql time types with specified precisionNikolay Kondratyev2018-07-041-0/+4
|/ | | | | | | | | | | | | | | | The TIME, DATETIME, and TIMESTAMP types [have supported](https://mariadb.com/kb/en/library/microseconds-in-mariadb/) a fractional seconds precision from 0 to 6. Default values from time columns with specified precision is read as `current_timestamp(n)` from information schema. rake `db:schema:dump` produces `schema.rb` **without** default values for time columns with the specified precision: t.datetime "last_message_at", precision: 6, null: false rake `db:schema:dump` produces `schema.rb` **with** default values for time columns with the specified precision: t.datetime "last_message_at", precision: 6, default: -> { "current_timestamp(6)" }, null: false
* Fix `touch` option to behave consistently with `Persistence#touch` methodRyuta Kamizono2018-06-181-0/+4
| | | | | | | | | | | | | | | | `touch` option was added to `increment!` (#27660) and `update_counters` (#26995). But that option behaves inconsistently with `Persistence#touch` method. If `touch` option is passed attribute names, it won't update update_at/on attributes unlike `Persistence#touch` method. Due to changed from `Persistence#touch` to `increment!` with `touch` option, #31405 has a regression that `counter_cache` with `touch` option which is passed attribute names won't update update_at/on attributes. I think that the inconsistency is not intended. To get back consistency, ensure that `touch` option updates update_at/on attributes.
* Merge pull request #29373 from untidy-hair/store_accessor_enhanceRyuta Kamizono2018-06-131-2/+2
|\ | | | | | | Allow prefix/suffix options for store accessors
* | :scissors:Ryuta Kamizono2018-06-101-1/+1
| | | | | | | | [ci skip]
* | Migrations will raise an exception if there are multiple column definitions ↵Federico Martinez2018-06-011-0/+6
| | | | | | | | (same name).
* | [skip ci] Add changelog about bumping minimum SQLite version to 3.8Yasuo Honda2018-06-011-0/+4
| | | | | | | | Related to #32923
* | Merge pull request #32952 from mechanicles/32940-fixRyuta Kamizono2018-05-291-0/+6
|\ \ | |/ |/| | | Fix parent record should not get saved with duplicate children records
| * Fix parent record should not get saved with duplicate children recordsSantosh Wadghule2018-05-281-0/+6
|/ | | | - Fixes #32940
* Fix logic on disabling commit callbacksBrian Durand2018-05-041-0/+4
| | | | Commit callbacks are intentionally disabled when errors occur when calling the callback chain in order to reset the internal record state. However, the implicit order of operations on the logic for checking if callbacks are disabled is wrong. The result is that callbacks can be unexpectedly when errors occur in transactions.
* Loaded associations should not run a new query when size is calledGraham Turner2018-04-261-0/+5
| | | | | | | Already loaded associations were running an extra query when `size` was called on the association. This fix ensures that an extra query is no longer run. Update tests to use proper methods
* Can preload associations through polymorphic associationsDana Sherson2018-04-201-0/+4
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* Add `touch_all` method to `ActiveRecord::Relation`fatkodima2018-04-131-0/+8
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* [ci skip] Fully quantify Active Record module in changelog.Kasper Timm Hansen2018-04-021-1/+1
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* Add AR::Base.base_class? predicateBogdan Gusiev2018-04-021-0/+4
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* Add custom prefix to ActiveRecord::Store accessorsTan Huynh2018-03-231-0/+4
| | | | | | Add a prefix option to ActiveRecord::Store.store_accessor and ActiveRecord::Store.store. This option allows stores to have identical keys with different accessors.
* Remove changelog header for unreleased versionRafael Mendonça França2018-03-131-2/+0
| | | | | | We only add the header when releasing to avoid some conflicts. [ci skip]
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