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Introduce Actionable Errors
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Actionable errors let's you dispatch actions from Rails' error pages. This
can help you save time if you have a clear action for the resolution of
common development errors.
The de-facto example are pending migrations. Every time pending migrations
are found, a middleware raises an error. With actionable errors, you can
run the migrations right from the error page. Other examples include Rails
plugins that need to run a rake task to setup themselves. They can now
raise actionable errors to run the setup straight from the error pages.
Here is how to define an actionable error:
```ruby
class PendingMigrationError < MigrationError #:nodoc:
include ActiveSupport::ActionableError
action "Run pending migrations" do
ActiveRecord::Tasks::DatabaseTasks.migrate
end
end
```
To make an error actionable, include the `ActiveSupport::ActionableError`
module and invoke the `action` class macro to define the action. An action
needs a name and a procedure to execute. The name is shown as the name of a
button on the error pages. Once clicked, it will invoke the given
procedure.
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This follows #35595.
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This partly reverts 8ca3c286a768038f6b391fd3bfbdfcc299876a1f.
`.is_a?(GeneratedAttributeMethodsBuilder)` doesn't make sense to me, the
module class's `new` creates just an instance of the module class itself.
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When I added the rake tasks for multiple databases I accidentally made
it so you couldn't use Active Record without Railties.
Since getting the database configuration depends on being able to load
Railties (there is no other way to read and parse the yaml file and load
it) I've decided that using multiple databases outside of Rails is a
no-op.
I've changed the code here to return if Rails isn't defined. Then I
changed the other tasks to use `ActiveRecord::Tasks::DatabaseTasks.env`
instead of `Rails.env`. The multi-db tasks can keep using `Rails.env`
because they'll only be generated if we're using Rails and not just
Active Record.
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Fix dirty tracking after rollback.
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Currently the rollback only restores primary key value, `new_record?`,
`destroyed?`, and `frozen?`. Since the `save` clears current dirty
attribute states, retrying save after rollback will causes no change
saved if partial writes is enabled (by default).
This makes `remember_transaction_record_state` remembers original values
then restores dirty attribute states after rollback.
Fixes #15018.
Fixes #30167.
Fixes #33868.
Fixes #33443.
Closes #33444.
Closes #34504.
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Cache versioning enables the same cache key to be reused when the object
being cached changes by moving the volatile part of the cache key out of
the cache key and into a version that is embedded in the cache entry.
This is already occurring when the object being cached is an
`ActiveRecord::Base`, but when caching an `ActiveRecord::Relation`
we are currently still putting the volatile information (max updated at
and count) as part of the cache key.
This PR moves the volatile part of the relations `cache_key` into the
`cache_version` to support recycling cache keys for
`ActiveRecord::Relation`s.
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Cache full MySQL version in schema cache
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* Remove AbstractMysqlAdapter::Version since full_version_string will always
be set.
* Remove nodoc on private methods because private methods are not exposed in
the docs.
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* The database version is cached in all the adapters, but this didn't include
the full MySQL version. Anything that uses the full MySQL version would need
to query the database to get that data even if they're using the schema
cache.
* Now the full MySQL version will be cached in the schema cache via the
Version object.
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Find query_source_location using lazy Enumerator
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This way, we only need to filter the backtrace up to the first non-noise
stack frame.
This also updates noise to be able to deal with being passed a lazy
enum. We don't need this anywhere, but it seemed better for this to be
consistent.
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Since 8180c39, remaining transaction state is cleared in
`force_clear_transaction_record_state` to less work
`sync_with_transaction_state`. But it caused a race condition that
`@transaction_state` would be cleared by other threads if the state is
finalized.
To work as before, snapshot `@transaction_state` to local variable not
to refer `@transaction_state` directly.
Fixes #35983.
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Remove `required: true` from the model generator template
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`belongs_to` association have `required: true` by default
https://github.com/rails/rails/pull/18937 onwards so we don't need it
in the generator template.
We still need the code for required in the command line generator as
it adds `null: false` in the migration.
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eileencodes/fix-connection-when-handler-doesnt-exist
Ensure a handler is set when using `connected_to`
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After looking at #35800 there is definitely an issue in the
`connected_to` method although it's generally behaving. Here are the
details:
1) I added a default connection role - writing - to the connection
handler lookup. I did this because otherwise if you did this:
```
connected_to(databse: :development)
```
And development wasn't a pre-established role it would create a new
handler and connect using that. I don't think this is right so I've
updated it to pick up the default (:writing) unless otherwise specified.
To set a handler when using the database version pass a hash like you
would to `connects_to`:
```
connected_to(database: { readonly_slow: :development })
```
This will connect the `development` database to the `readonly_slow`
handler/role.
2) I updated the tests to match this behavior that we expect.
3) I updated the documentation to clarify that using `connected_to` with
a `database` key will establish a new connection every time. This is
exactly how `establish_connection` behaves and I feel this is correct.
If you want to only establish a connection once you should do that in
the model with `connects_to` and then swap on the role instead of on the
database hash/key.
4) In regards to #35800 this fixes the case where you pass a symbol to
the db and not a hash. But it doesn't fix a case where you may pass an
unknown handler to an abstract class that's not connected. This is
tricky because technical AbstractFoo doesn't have any connections except
for through ApplicationRecord, so in the case of the application that
was shared we should only be swapping connections on ActiveRecord::Base
because there are no other actual connections - AbstractFoo isn't needed
since it's not establishing a new connection. If we need AbstractFoo to
connect to a new handler we should establish that connection with the
handler in AbstractFoo before trying to shard there.
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Before this fix, `touch` only clears dirty tracking for touched
attributes, doesn't track saved (touched) changes.
This fixes that tracks saved changes and carry over remaining changes.
Fixes #33429.
Closes #34306.
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make change_column_comment and change_table_comment invertible
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We can revert migrations using `change_column_comment` or
`change_table_comment` at current master.
However, results are not what we expect: comments are remained in new
status.
This change tells previous comment to these methods in a way like
`change_column_default`.
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All transaction states (:committed, :fully_committed, :rolledback,
:fully_rolledback) are mutually exclusive.
And also, `force_clear_transaction_record_state` should clear
`@transaction_state` as well.
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`set_transaction_state`
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`add_to_transaction` was added at da840d1, but it should not be called
by except internal, since `remember_transaction_record_state` should be
called only once before saving.
And also, currently `add_to_transaction` doesn't always add the record
to transaction since da8de91, that is the reason hard to use that even
in internal.
Even if `add_to_transaction` ensure to add the record to transaction,
that is an internal concern, people don't need to explicitly call
`add_to_transaction`.
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use PostgreSQL's bulk_alter_table implementation
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Running this migration on mysql at current master fails
because `add_references_for_alter` is missing.
```
change_table :users, bulk: true do |t|
t.references :article
end
```
This is also true for postgresql adapter,
but its `bulk_alter_table` implementation can fallback in such case.
postgresql's implementation is desirable to prevent unknown failure like this.
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Most of the time, these methods are called from actual methods defined
from columns in the schema, not from method_missing, so the current
wording is misleading.
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kamipo/lazy_sync_with_transaction_state_on_destroy
Lazy sync with transaction state on destroy
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This reverts commit 58410b3d566e6b93c7b71c0eec0fc11ec906b68e.
If we have any implicit commit/rollback callbacks, it is necessary to
add record to transaction explicitly like `:touch_deferred_attributes`.
https://github.com/rails/rails/blob/5f261d04d6f857d49c75124df809adfbd6cd5b5e/activerecord/lib/active_record/touch_later.rb#L9
https://github.com/rails/rails/blob/5f261d04d6f857d49c75124df809adfbd6cd5b5e/activerecord/lib/active_record/touch_later.rb#L25
But I can't find any other implicit commit/rollback callbacks in our
code base at least now.
I think the `self.class.connection.add_transaction_record(self)` line
doesn't cover any behavior.
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kamipo/dont_call_commit_callbacks_for_invalid_record
Don't call after_commit callbacks despite a record isn't saved
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Regardless of a record isn't saved (e.g. validation is failed),
`after_commit` / `after_rollback` callbacks are invoked for now.
To fix the issue, this adds a record to the current transaction only
when a record is actually saved.
Fixes #29747.
Closes #29833.
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Fix `automatic_inverse_of` not to be disabled if extension block is given
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If an association has a scope, `automatic_inverse_of` is to be disabled.
But extension block is obviously not a scope. It should not be regarded
as a scope.
Fixes #28806.
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* remove useless `@type_metadata` and `@array`
* move the compatibility code (for array) into column
* etc.
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Address `ORA-01795: maximum number of expressions in a list is 1000`
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* To address this error, this commit splits expressions by slices of 1000 elements.
* "Oracle Database Error Messages 18c"
https://docs.oracle.com/en/database/oracle/oracle-database/18/errmg/
```
ORA-01795: maximum number of expressions in a list is 1000
Cause: Number of expressions in the query exceeded than 1000. Note that unused column/expressions are also counted Maximum number of expressions that are allowed are 1000.
```
* This commit addresses this ORA-01795 error
Note: Actually addressing this error raises another "ORA-00913: too many values"
Number of values Oracle database allows is 65535 regardless bind values or literal values.
```ruby
$ ARCONN=oracle bin/test test/cases/bind_parameter_test.rb -n test_too_many_binds
... snip ...
Error:
ActiveRecord::BindParameterTest#test_too_many_binds:
ActiveRecord::StatementInvalid: OCIError: ORA-01795: maximum number of expressions in a list is 1000
stmt.c:267:in oci8lib_260.so
/home/yahonda/.rbenv/versions/2.6.2/lib/ruby/gems/2.6.0/gems/ruby-oci8-2.2.7/lib/oci8/cursor.rb:131:in `exec'
/home/yahonda/git/oracle-enhanced/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:142:in `exec'
/home/yahonda/git/oracle-enhanced/lib/active_record/connection_adapters/oracle_enhanced/database_statements.rb:41:in `block in exec_query'
/home/yahonda/git/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:676:in `block (2 levels) in log'
/home/yahonda/.rbenv/versions/2.6.2/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/home/yahonda/git/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:675:in `block in log'
/home/yahonda/git/rails/activesupport/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
/home/yahonda/git/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:666:in `log'
/home/yahonda/git/oracle-enhanced/lib/active_record/connection_adapters/oracle_enhanced/dbms_output.rb:36:in `log'
/home/yahonda/git/oracle-enhanced/lib/active_record/connection_adapters/oracle_enhanced/database_statements.rb:24:in `exec_query'
/home/yahonda/git/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:484:in `select'
/home/yahonda/git/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:70:in `select_all'
/home/yahonda/git/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb:106:in `select_all'
/home/yahonda/git/rails/activerecord/lib/active_record/relation/calculations.rb:299:in `block in execute_simple_calculation'
/home/yahonda/git/rails/activerecord/lib/active_record/relation.rb:755:in `skip_query_cache_if_necessary'
/home/yahonda/git/rails/activerecord/lib/active_record/relation/calculations.rb:299:in `execute_simple_calculation'
/home/yahonda/git/rails/activerecord/lib/active_record/relation/calculations.rb:251:in `perform_calculation'
/home/yahonda/git/rails/activerecord/lib/active_record/relation/calculations.rb:141:in `calculate'
/home/yahonda/git/rails/activerecord/lib/active_record/relation/calculations.rb:49:in `count'
/home/yahonda/git/rails/activerecord/test/cases/bind_parameter_test.rb:113:in `test_too_many_binds'
bin/test test/cases/bind_parameter_test.rb:109
.............................F
```
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Deduplicate Active Record reflection names
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michaelglass/move-sqlite-3-database-statements-into-database-statements
make SQLite3 `last_inserted_id` private and organize DatabaseStatement methods
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Sqlite3::DatabaseStatements and make those that are private in Abstract::DatabaseStatements private for sqlite3
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PERF: 2x ~ 30x faster dirty tracking
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Currently, although using both dirty tracking (ivar backed and
attributes backed) on one model is not supported (doesn't fully work at
least), both dirty tracking are being performed, that is very slow.
As long as attributes backed dirty tracking is used, ivar backed dirty
tracking should not need to be performed.
I've refactored to extract new `ForcedMutationTracker` which only tracks
`force_change` to be performed for ivar backed dirty tracking, that
makes dirty tracking on Active Record 2x ~ 30x faster.
https://gist.github.com/kamipo/971dfe0891f0fe1ec7db8ab31f016435
Before:
```
Warming up --------------------------------------
changed? 4.467k i/100ms
changed 5.134k i/100ms
changes 3.023k i/100ms
changed_attributes 4.358k i/100ms
title_change 3.185k i/100ms
title_was 3.381k i/100ms
Calculating -------------------------------------
changed? 42.197k (±28.5%) i/s - 187.614k in 5.050446s
changed 50.481k (±16.0%) i/s - 246.432k in 5.045759s
changes 30.799k (± 7.2%) i/s - 154.173k in 5.030765s
changed_attributes 51.530k (±14.2%) i/s - 252.764k in 5.041106s
title_change 44.667k (± 9.0%) i/s - 222.950k in 5.040646s
title_was 44.635k (±16.6%) i/s - 216.384k in 5.051098s
```
After:
```
Warming up --------------------------------------
changed? 24.130k i/100ms
changed 13.503k i/100ms
changes 6.511k i/100ms
changed_attributes 9.226k i/100ms
title_change 48.221k i/100ms
title_was 96.060k i/100ms
Calculating -------------------------------------
changed? 245.478k (±16.1%) i/s - 1.182M in 5.015837s
changed 157.641k (± 4.9%) i/s - 796.677k in 5.066734s
changes 70.633k (± 5.7%) i/s - 358.105k in 5.086553s
changed_attributes 95.155k (±13.6%) i/s - 470.526k in 5.082841s
title_change 566.481k (± 3.5%) i/s - 2.845M in 5.028852s
title_was 1.487M (± 3.9%) i/s - 7.493M in 5.046774s
```
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* Adding type option example to the documentation [ci skip]
It was hard for me looking https://api.rubyonrails.org/ to find that there was a type option.
Adding this to the doc would be helpful especially for application with old tables where the references are still an integer not bigint
* Update activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
Co-Authored-By: robertomiranda <rjmaltamar@gmail.com>
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Fix "autosave: true" on belongs_to of join model causes invalid records to be saved
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Use a variable local to the `save_collection_association` method in
`activerecord/lib/active_record/autosave_association.rb`, instead of an
instance variable.
Prior to this PR, when there was a circular series of `autosave: true`
associations, the callback for a `has_many` association was run while
another instance of the same callback on the same association hadn't
finished running. When control returned to the first instance of the
callback, the instance variable had changed, and subsequent associated
records weren't saved correctly. Specifically, the ID field for the
`belongs_to` corresponding to the `has_many` was `nil`.
Remove unnecessary test and comments.
Fixes #28080.
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Refer #35875.
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All adapters (sqlite3, mysql2, postgresql, oracle-enhanced, sqlserver)
doesn't use `sequence_name` in `sql_for_insert`.
https://github.com/rsim/oracle-enhanced/blob/4e0db270a93859c9713fd079dbb315b9fe550e57/lib/active_record/connection_adapters/oracle_enhanced/database_statements.rb#L79-L85
https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/blob/959fe8f49744460b876bc205c73259f8d4f37629/lib/active_record/connection_adapters/sqlserver/database_statements.rb#L226-L249
It can be handled in `exec_insert` like postgresql adapter if we want.
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