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* Clarify no support for non PK id columnsGannon McGibbon2018-11-301-5/+6
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* Add ability to prevent writes to a databaseEileen Uchitelle2018-11-3010-1/+286
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This PR adds the ability to prevent writes to a database even if the database user is able to write (ie the database is a primary and not a replica). This is useful for a few reasons: 1) when converting your database from a single db to a primary/replica setup - you can fix all the writes on reads early on, 2) when we implement automatic database switching or when an app is manually switching connections this feature can be used to ensure reads are reading and writes are writing. We want to make sure we raise if we ever try to write in read mode, regardless of database type and 3) for local development if you don't want to set up multiple databases but do want to support rw/ro queries. This should be used in conjunction with `connected_to` in write mode. For example: ``` ActiveRecord::Base.connected_to(role: :writing) do Dog.connection.while_preventing_writes do Dog.create! # will raise because we're preventing writes end end ActiveRecord::Base.connected_to(role: :reading) do Dog.connection.while_preventing_writes do Dog.first # will not raise because we're not writing end end ```
* Merge pull request #34572 from kamipo/fix_scoping_with_query_methodRyuta Kamizono2018-11-303-2/+8
|\ | | | | Fix the scoping with query methods in the scope block
| * Fix the scoping with query methods in the scope blockRyuta Kamizono2018-11-303-2/+8
| | | | | | | | | | | | | | | | | | Follow up #33394. #33394 only fixes the case of scoping with klass methods in the scope block which invokes `klass.all`. Query methods in the scope block also need to invoke `klass.all` to be affected by the scoping.
* | Use the full link URL instead of bit.ly [ci skip]Ryuta Kamizono2018-11-301-1/+2
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* | Allow aliased attributes in updateGannon McGibbon2018-11-293-3/+17
| | | | | | | | Allow aliased attributes to be used in `#update_columns` and `#update`.
* | Merge pull request #34562 from ruralocity/active-record-query-docs-improvementRafael França2018-11-281-7/+9
|\ \ | | | | | | Improve ActiveRecord::Querying documentation [ci skip]
| * | Improve ActiveRecord::Querying documentation [ci skip]Aaron Sumner2018-11-281-7/+9
| | | | | | | | | | | | | | | | | | * Break up long sentences * Reword some sentences to clarify subject, predicate, and object * Explain drawbacks of using count_by_sql
* | | Allow spaces in postgres table namesGannon McGibbon2018-11-283-1/+12
|/ / | | | | | | | | Fixes issue where "user post" is misinterpreted as "\"user\".\"post\"" when quoting table names with the postgres adapter.
* | Merge pull request #34557 from sergioisidoro/sergio-patch-load-errorRafael França2018-11-281-2/+2
|\ \ | | | | | | Patch load error in case GemSpecError
| * | Patch load error in case GemSpecErrorsergioisidoro2018-11-281-2/+2
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* | | Merge pull request #33835 from schneems/schneems/faster_cache_versionSean Griffin2018-11-272-4/+130
|\ \ \ | | | | | | | | Use raw time string from DB to generate ActiveRecord#cache_version
| * | | Prefer String#ljust over String#<< for paddinglsylvester2018-10-171-3/+2
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| * | | Do not silently fail to generate a cache_versionschneems2018-10-172-6/+19
| | | | | | | | | | | | | | | | | | | | | | | | When an `updated_at` column exists on the model, but is not available on the instance (likely due to a select), we should raise an error rather than silently not generating a cache_version. Without this behavior it's likely that cache entries will not be able to be invalidated and this will happen without notice. This behavior was reported and described by @lsylvester in https://github.com/rails/rails/pull/34197#issuecomment-429668759.
| * | | Use raw time string from DB to generate ActiveRecord#cache_versionschneems2018-10-172-4/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the `updated_at` field is used to generate a `cache_version`. Some database adapters return this timestamp value as a string that must then be converted to a Time value. This process requires a lot of memory and even more CPU time. In the case where this value is only being used for a cache version, we can skip the Time conversion by using the string value directly. - This PR preserves existing cache format by converting a UTC string from the database to `:usec` format. - Some databases return an already converted Time object, in those instances, we can directly use `created_at`. - The `updated_at_before_type_cast` can be a value that comes from either the database or the user. We only want to optimize the case where it is from the database. - If the format of the cache version has been changed, we cannot apply this optimization, and it is skipped. - If the format of the time in the database is not UTC, then we cannot use this optimization, and it is skipped. Some databases (notably PostgreSQL) returns a variable length nanosecond value in the time string. If the value ends in a zero, then it is truncated For instance instead of `2018-10-12 05:00:00.000000` the value `2018-10-12 05:00:00` is returned. We detect this case and pad the remaining zeros to ensure consistent cache version generation. Before: Total allocated: 743842 bytes (6626 objects) After: Total allocated: 702955 bytes (6063 objects) (743842 - 702955) / 743842.0 # => 5.4% ⚡️⚡️⚡️⚡️⚡️ Using the CodeTriage application and derailed benchmarks this PR shows between 9-11% (statistically significant) performance improvement versus the commit before it. Special thanks to @lsylvester for helping to figure out a way to preserve the usec format and for helping with many implementation details.
* | | | Merge pull request #34528 from DmitryTsepelev/fix-ignored-attributesRafael França2018-11-275-1/+57
|\ \ \ \ | |_|_|/ |/| | | Additional types of ResultSet should not contain keys of #attributes_to_define_after_schema_loads
| * | | Cached columns_hash fields should be excluded from ResultSet#column_typesDmitryTsepelev2018-11-275-1/+57
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* | | | More exercise singular association queryRyuta Kamizono2018-11-284-7/+14
| | | | | | | | | | | | | | | | Follow up ba4e68f577efc76f351d30a2914e29942b97830e.
* | | | Ensure that singular association should execute limited queryRyuta Kamizono2018-11-282-5/+12
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* | | | Revert "Merge pull request #34538 from bogdan/reuse-find-target"Ryuta Kamizono2018-11-283-23/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit f2ab8b64d4d46d7199f94c3e21021f414a4d259a, reversing changes made to b9c7305dbe57931a153a540d49ae5d469af61a14. Reason: `scope.take` is not the same with `scope.to_a.first`.
* | | | Merge pull request #34538 from bogdan/reuse-find-targetEileen M. Uchitelle2018-11-273-29/+23
|\ \ \ \ | |/ / / |/| | | Reuse code in AR::Association#find_target
| * | | Reuse code in AR::Association#find_targetBogdan Gusiev2018-11-273-29/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Before this patch, singular and collection associations had different implementations of the #find_target method. This patch reuses the code properly through extending the low level methods.
* | | | Merge pull request #34480 from tekin/configurable-implicit-ordering-columnEileen M. Uchitelle2018-11-274-2/+45
|\ \ \ \ | | | | | | | | | | Make it possible to override the implicit order column
| * | | | Make implicit order column configurableTekin Suleyman2018-11-264-2/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When calling ordered finder methods such as +first+ or +last+ without an explicit order clause, ActiveRecord sorts records by primary key. This can result in unpredictable and surprising behaviour when the primary key is not an auto-incrementing integer, for example when it's a UUID. This change makes it possible to override the column used for implicit ordering such that +first+ and +last+ will return more predictable results. For Example: class Project < ActiveRecord::Base self.implicit_order_column = "created_at" end
* | | | | Revert "We still need the `Helpers` constant in the `ActiveRecord` namespace"Ryuta Kamizono2018-11-271-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit d52f74480ae46cd3de7ce697093136b01c7a2172. Since 24adc20, the `Helpers` constant in the `ActiveRecord` namespace is not referenced anymore.
* | | | | `Mutable` helper is in `ActiveModel`Ryuta Kamizono2018-11-274-4/+4
|/ / / / | | | | | | | | | | | | It should be referenced by full qualified name from Active Record.
* | | | Merge pull request #34520 from yahonda/bump_pg93Rafael França2018-11-268-402/+382
|\ \ \ \ | | | | | | | | | | Bump the minimum version of PostgreSQL to 9.3
| * | | | Bump the minimum version of PostgreSQL to 9.3Yasuo Honda2018-11-258-402/+382
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://www.postgresql.org/support/versioning/ - 9.1 EOLed on September 2016. - 9.2 EOLed on September 2017. 9.3 is also not supported since Nov 8, 2018. https://www.postgresql.org/about/news/1905/ I think it may be a little bit early to drop PostgreSQL 9.3 yet. * Deprecated `supports_ranges?` since no other databases support range data type * Add `supports_materialized_views?` to abstract adapter Materialized views itself is supported by other databases, other connection adapters may support them * Remove `with_manual_interventions` It was only necessary for PostgreSQL 9.1 or earlier * Drop CI against PostgreSQL 9.2
* | | | | Merge pull request #34521 from azbshiri/mysql-exec-query-resultEileen M. Uchitelle2018-11-262-2/+15
|\ \ \ \ \ | |_|/ / / |/| | | | Test when using MySQL `exec_query` returns `ActiveRecord::Result` all…
| * | | | When running exec_query MySQL always returns ActiveRecord::ResultAlireza Bashiri2018-11-252-2/+15
| |/ / / | | | | | | | | | | | | | | | | When running `exec_query` with `INSERT` (or other write commands), MySQL returns `ActiveRecord::Result`.
* | | | Fix random CI failure due to non-deterministic sorting orderRyuta Kamizono2018-11-261-2/+2
| | | | | | | | | | | | | | | | https://travis-ci.org/rails/rails/jobs/459534536#L1280
* | | | SQLite 3.7.16+ returns the order of the primary key columnsYasuo Honda2018-11-251-2/+0
|/ / / | | | | | | | | | | | | | | | | | | | | | https://www.sqlite.org/releaselog/3_7_16.html > 9 Enhance the PRAGMA table_info command so that the "pk" column is an increasing integer to show the order of columns in the primary key. Rails 6 supports SQLite 3.8 then we can remove this skip condition.
* | | Raises error when attempting to modify enum valuesebyrds2018-11-233-0/+19
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* | | Merge pull request #34468 from gmcgibbon/redact_sql_in_errorsRafael França2018-11-239-58/+112
|\ \ \ | | | | | | | | Redact SQL in errors
| * | | Redact SQL in errorsGannon McGibbon2018-11-229-58/+112
| | | | | | | | | | | | | | | | | | | | Move `ActiveRecord::StatementInvalid` SQL to error property. Also add bindings as an error property.
* | | | Use squiggly heredoc to strip odd indentation in the executed SQLRyuta Kamizono2018-11-2219-91/+81
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before: ``` LOG: execute <unnamed>: SELECT t.oid, t.typname FROM pg_type as t WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'bool') LOG: execute <unnamed>: SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype FROM pg_type as t LEFT JOIN pg_range as r ON oid = rngtypid WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'text', 'varchar', 'char', 'name', 'bpchar', 'bool', 'bit', 'varbit', 'timestamptz', 'date', 'money', 'bytea', 'point', 'hstore', 'json', 'jsonb', 'cidr', 'inet', 'uuid', 'xml', 'tsvector', 'macaddr', 'citext', 'ltree', 'interval', 'path', 'line', 'polygon', 'circle', 'lseg', 'box', 'time', 'timestamp', 'numeric') OR t.typtype IN ('r', 'e', 'd') OR t.typinput::varchar = 'array_in' OR t.typelem != 0 LOG: statement: SHOW TIME ZONE LOG: statement: SELECT 1 LOG: execute <unnamed>: SELECT COUNT(*) FROM pg_class c LEFT JOIN pg_namespace n ON n.oid = c.relnamespace WHERE c.relkind IN ('r','v','m') -- (r)elation/table, (v)iew, (m)aterialized view AND c.relname = 'accounts' AND n.nspname = ANY (current_schemas(false)) ``` After: ``` LOG: execute <unnamed>: SELECT t.oid, t.typname FROM pg_type as t WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'bool') LOG: execute <unnamed>: SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype FROM pg_type as t LEFT JOIN pg_range as r ON oid = rngtypid WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'text', 'varchar', 'char', 'name', 'bpchar', 'bool', 'bit', 'varbit', 'timestamptz', 'date', 'money', 'bytea', 'point', 'hstore', 'json', 'jsonb', 'cidr', 'inet', 'uuid', 'xml', 'tsvector', 'macaddr', 'citext', 'ltree', 'interval', 'path', 'line', 'polygon', 'circle', 'lseg', 'box', 'time', 'timestamp', 'numeric') OR t.typtype IN ('r', 'e', 'd') OR t.typinput::varchar = 'array_in' OR t.typelem != 0 LOG: statement: SHOW TIME ZONE LOG: statement: SELECT 1 LOG: execute <unnamed>: SELECT COUNT(*) FROM pg_class c LEFT JOIN pg_namespace n ON n.oid = c.relnamespace WHERE c.relkind IN ('r','v','m') -- (r)elation/table, (v)iew, (m)aterialized view AND c.relname = 'accounts' AND n.nspname = ANY (current_schemas(false)) ```
* | | Fixing an issue when parsing an opclass by allowing indexed columnThomas Bianchini2018-11-212-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | in indexdef to be wrapped up by double quotes Fixes #34493. *Thomas Bianchini*
* | | Merge pull request #34491 from rails/fix-query-cache-on-multiple-connectionsEileen M. Uchitelle2018-11-212-4/+27
|\ \ \ | | | | | | | | Fix query cache for multiple connections
| * | | Fix query cache for multiple connectionsEileen Uchitelle2018-11-202-4/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the query cache is only aware of one handler so once we added multiple databases switching on the handler we broke query cache for those reading connections. While #34054 is the proper fix, that fix is not straight forward and I want to make sure that the query cache isn't just broken for all other connections not in the main handler.
* | | | Make connection handler per thread instead of per fiberEileen Uchitelle2018-11-202-2/+39
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The connection handler was using the RuntimeRegistry which kind of implies it's a per thread registry. But it's actually per fiber. If you have an application that uses fibers and you're using multiple databases, when you switch the connection handler to swap connections new fibers running on the same thread used to get a different connection id. This PR changes the code to actually use a thread so that we get the same connection. Fixes https://github.com/rails/rails/issues/30047 [Eileen M. Uchitelle, Aaron Patterson, & Arthur Neeves]
* | | Merge pull request #33954 from ↵Aaron Patterson2018-11-204-3/+43
|\ \ \ | | | | | | | | | | | | | | | | febeling/inconsistent-assignment-has-many-through-33942 Fix handling of duplicates for `replace` on has_many-through
| * | | Optimize difference and intersectionFlorian Ebeling2018-11-061-17/+9
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| * | | Rename union to intersectionFlorian Ebeling2018-11-063-3/+3
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| * | | Fix handling of duplicates for `replace` on has_many-throughFlorian Ebeling2018-11-064-3/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was a bug in the handling of duplicates when assigning (replacing) associated records, which made the result dependent on whether a given record was associated already before being assigned anew. E.g. post.people = [person, person] post.people.count # => 2 while post.people = [person] post.people = [person, person] post.people.count # => 1 This change adds a test to provoke the former incorrect behavior, and fixes it. Cause of the bug was the handling of record collections as sets, and using `-` (difference) and `&` (union) operations on them indiscriminately. This temporary conversion to sets would eliminate duplicates. The fix is to decorate record collections for these operations, and only for the `has_many :through` case. It is done by counting occurrences, and use the record together with the occurrence number as element, in order to make them work well in sets. Given a, b = *Person.all then the collection used for finding the difference or union of records would be internally changed from [a, b, a] to [[a, 1], [b, 1], [a, 2]] for these operations. So a first occurrence and a second occurrence would be distinguishable, which is all that is necessary for this task. Fixes #33942.
* | | | Merge pull request #34453 from bogdanvlviv/exercise-connected_to-and-connects_toAaron Patterson2018-11-192-1/+36
|\ \ \ \ | | | | | | | | | | Exercise `connected_to` and `connects_to` methods
| * | | | Exercise `connected_to` and `connects_to` methodsbogdanvlviv2018-11-152-1/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since both methods are public API I think it makes sense to add these tests in order to prevent any regression in the behavior of those methods after the 6.0 release. Exercise `connected_to` - Ensure that the method raises with both `database` and `role` arguments - Ensure that the method raises without `database` and `role` Exercise `connects_to` - Ensure that the method returns an array of established connections(as mentioned in the docs of the method) Related to #34052
* | | | | Fix typo and clarify documentationJacob Evelyn2018-11-161-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit fixes a small typo in documentation of the "UNLOGGED" table option for PostgreSQL databases, and clarifies the documentation slightly.
* | | | | Fix cache_versioning default note (#34466)Gannon McGibbon2018-11-161-1/+1
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* | | | | Arel: Implemented DB-aware NULL-safe comparison (#34451)Dmytro Shteflyuk2018-11-1523-1/+492
|/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Arel: Implemented DB-aware NULL-safe comparison * Fixed where clause inversion for NULL-safe comparison * Renaming "null_safe_eq" to "is_not_distinct_from", "null_safe_not_eq" to "is_distinct_from" [Dmytro Shteflyuk + Rafael Mendonça França]
* | | | Merge pull request #34437 from kbrock/union_all_parenRafael Mendonça França2018-11-134-42/+41
|\ \ \ \ | | | | | | | | | | | | | | | Fix: Arel now emits a single pair of parens for UNION and UNION ALL
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