| Commit message (Collapse) | Author | Age | Files | Lines |
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BEGIN transaction would cause COMMIT or ROLLBACK, so unless COMMIT and
ROLLBACK aren't treated as write queries as well as BEGIN, the
`ReadOnlyError` would be raised.
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Otherwise `save` method would raise the `ReadOnlyError` against `BEGIN`
and `ROLLBACK` queries.
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I originally named this `StatementInvalid` because that's what we do in
GitHub, but `@tenderlove` pointed out that this means apps can't test
for or explitly rescue this error. `StatementInvalid` is pretty broad so
I've renamed this to `ReadOnlyError`.
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And hide the `READ_QUERY` internal constant.
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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
```
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Fixes issue where "user post" is misinterpreted as "\"user\".\"post\""
when quoting table names with the postgres adapter.
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It should be referenced by full qualified name from Active Record.
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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))
```
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in indexdef to be wrapped up by double quotes
Fixes #34493.
*Thomas Bianchini*
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This commit adds support for the
`ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.create_unlogged_tables`
setting, which turns `CREATE TABLE` SQL statements into
`CREATE UNLOGGED TABLE` statements.
This can improve PostgreSQL performance but at the
cost of data durability, and thus it is highly recommended
that you *DO NOT* enable this in a production environment.
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Since quoted `Infinity` and `NaN` are valid data for PostgreSQL.
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Since Rails 6.0 will support Ruby 2.4.1 or higher
`# frozen_string_literal: true` magic comment is enough to make string object frozen.
This magic comment is enabled by `Style/FrozenStringLiteralComment` cop.
* Exclude these files not to auto correct false positive `Regexp#freeze`
- 'actionpack/lib/action_dispatch/journey/router/utils.rb'
- 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb'
It has been fixed by https://github.com/rubocop-hq/rubocop/pull/6333
Once the newer version of RuboCop released and available at Code Climate these exclude entries should be removed.
* Replace `String#freeze` with `String#-@` manually if explicit frozen string objects are required
- 'actionpack/test/controller/test_case_test.rb'
- 'activemodel/test/cases/type/string_test.rb'
- 'activesupport/lib/active_support/core_ext/string/strip.rb'
- 'activesupport/test/core_ext/string_ext_test.rb'
- 'railties/test/generators/actions_test.rb'
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In Ruby 2.3 or later, `String#+@` is available and `+@` is faster than `dup`.
```ruby
# frozen_string_literal: true
require "bundler/inline"
gemfile(true) do
source "https://rubygems.org"
gem "benchmark-ips"
end
Benchmark.ips do |x|
x.report('+@') { +"" }
x.report('dup') { "".dup }
x.compare!
end
```
```
$ ruby -v benchmark.rb
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux]
Warming up --------------------------------------
+@ 282.289k i/100ms
dup 187.638k i/100ms
Calculating -------------------------------------
+@ 6.775M (± 3.6%) i/s - 33.875M in 5.006253s
dup 3.320M (± 2.2%) i/s - 16.700M in 5.032125s
Comparison:
+@: 6775299.3 i/s
dup: 3320400.7 i/s - 2.04x slower
```
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PostgreSQL: prepare for pg-1.1
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Parsing of malformed array strings without raising an error is deprecated in
pg-1.1. It's therefore necessary to catch parser errors starting with pg-2.0.
See also pg commit:
https://bitbucket.org/ged/ruby-pg/commits/1b081326b346368e70c9c03ee7080e28d6b3a3dc
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Omit BEGIN/COMMIT statements for empty transactions
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If a transaction is opened and closed without any queries being run, we
can safely omit the `BEGIN` and `COMMIT` statements, as they only exist
to modify the connection's behaviour inside the transaction. This
removes the overhead of those statements when saving a record with no
changes, which makes workarounds like `save if changed?` unnecessary.
This implementation buffers transactions inside the transaction manager
and materializes them the next time the connection is used. For this to
work, the adapter needs to guard all connection use with a call to
`materialize_transactions`. Because of this, adapters must opt in to get
this new behaviour by implementing `supports_lazy_transactions?`.
If `raw_connection` is used to get a reference to the underlying
database connection, the behaviour is disabled and transactions are
opened eagerly, as we can't know how the connection will be used.
However when the connection is checked back into the pool, we can assume
that the application won't use the reference again and reenable lazy
transactions. This prevents a single `raw_connection` call from
disabling lazy transactions for the lifetime of the connection.
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* PostgreSQL 10 new relkind for partitioned tables
Starting with PostgreSQL 10, we can now have partitioned tables natively
* Add comment
* Remove extra space
* Add test for partition table in postgreSQL10
* Select 'p' for "BASE TABLE" and add a test case
to support PostgreSQL 10 partition tables
* Address RuboCop offense
* Addressed incorrect `postgresql_version`
Fixes #33008.
[Yannick Schutz & Yasuo Honda & Ryuta Kamizono]
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Since #26074, introduced force equality checking to build a predicate
consistently for both `find` and `create` (fixes #27313).
But the assumption that only array/range attribute have subtype was
wrong. We need to make force equality checking more strictly not to
allow serialized attribute.
Fixes #32761.
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So do not expose `PostgreSQLTypeMetadata` in the doc too.
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Prevent `ActiveRecord::FinderMethods#limited_ids_for` from using correct primary
key values even if `ORDER BY` columns include other table's primary key.
Fixes #28364.
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BC dates are supported by both date and datetime types.
https://www.postgresql.org/docs/current/static/datatype-datetime.html
Since #1097, new datetime allows year zero as 1 BC, but new date does
not. It should be allowed even in new date consistently.
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The values infinity and -infinity are supported by both date and
timestamp types.
https://www.postgresql.org/docs/current/static/datatype-datetime.html#DATATYPE-DATETIME-SPECIAL-TABLE
And also, it can not be known whether a value is infinity correctly
unless cast a value.
I've added `QueryAttribute#infinity?` to handle that case.
Closes #27585.
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Since #32028, Rails 6 requires Ruby 2.3+.
No longer needed workaround for Ruby 2.2 "private attribute?" warning.
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Some places we can't remove because Ruby still don't have a method
equivalent to strip_heredoc to be called in an already existent string.
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Postgresql bulk_change_table should flatten procs array
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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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An empty string is an invalid value in Ruby's range class.
So need to handle `Float::INFINITY` as it is and cast it in
`encode_range`.
Fixes #31612
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Add bulk alter support for PostgreSQL
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`BigDecimal.new` has been deprecated in BigDecimal 1.3.3
which will be a default for Ruby 2.5.
Refer https://github.com/ruby/bigdecimal/commit/533737338db915b00dc7168c3602e4b462b23503
```
$ cd rails/activerecord/
$ git grep -l BigDecimal.new | grep \.rb | xargs sed -i -e "s/BigDecimal.new/BigDecimal/g"
```
- Changes made only to Active Record. Will apply the same change to
other module once this commit is merged.
- The following deprecation has not been addressed because it has been
reported at `ActiveRecord::Result.new`. `ActiveRecord::Result.ancestors`
did not show `BigDecimal`.
* Not addressed
```ruby
/path/to/rails/activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb:34:
warning: BigDecimal.new is deprecated
```
* database_statements.rb:34
```ruby
ActiveRecord::Result.new(result.fields, result.to_a) if result
```
* ActiveRecord::Result.ancestors
```ruby
[ActiveRecord::Result,
Enumerable,
ActiveSupport::ToJsonWithActiveSupportEncoder,
Object,
Metaclass::ObjectMethods,
Mocha::ObjectMethods,
PP::ObjectMixin,
ActiveSupport::Dependencies::Loadable,
ActiveSupport::Tryable,
JSON::Ext::Generator::GeneratorMethods::Object,
Kernel,
BasicObject]
```
This commit has been tested with these Ruby and BigDecimal versions
- ruby 2.5 and bigdecimal 1.3.3
```
$ ruby -v
ruby 2.5.0dev (2017-12-14 trunk 61217) [x86_64-linux]
$ gem list |grep bigdecimal
bigdecimal (default: 1.3.3, default: 1.3.2)
```
- ruby 2.4 and bigdecimal 1.3.0
```
$ ruby -v
ruby 2.4.2p198 (2017-09-14 revision 59899) [x86_64-linux-gnu]
$ gem list |grep bigdecimal
bigdecimal (default: 1.3.0)
```
- ruby 2.3 and bigdecimal 1.2.8
```
$ ruby -v
ruby 2.3.5p376 (2017-09-14 revision 59905) [x86_64-linux]
$ gem list |grep -i bigdecimal
bigdecimal (1.2.8)
```
- ruby 2.2 and bigdecimal 1.2.6
```
$ ruby -v
ruby 2.2.8p477 (2017-09-14 revision 59906) [x86_64-linux]
$ gem list |grep bigdecimal
bigdecimal (1.2.6)
```
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Actually SQLite3 doesn't have JSON storage class (so it is stored as a
TEXT like Date and Time). But emulating JSON types is convinient for
making database agnostic migrations.
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If do not execute a type changing first, filling in default value may be
failed.
```
% ARCONN=postgresql be ruby -w -Itest test/cases/migration/compatibility_test.rb -n test_legacy_change_column_with_null_executes_update
Using postgresql
Run options: -n test_legacy_change_column_with_null_executes_update --seed 20459
E
Error:
ActiveRecord::Migration::CompatibilityTest#test_legacy_change_column_with_null_executes_update:
StandardError: An error has occurred, this and all later migrations canceled:
PG::StringDataRightTruncation: ERROR: value too long for type character varying(5)
: UPDATE "testings" SET "foo"='foobar' WHERE "foo" IS NULL
```
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`options_for_index_columns`
And placed `add_options_for_index_columns` in `schema_statements.rb`
consistently to ease to find related code.
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Extract sql fragment generators from PostgreSQL adapter
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Add validate_constraint and update naming
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Add support for specifying non-default operator classes in PostgreSQL
indexes. An example CREATE INDEX query that becomes possible is:
CREATE INDEX users_name ON users USING gist (name gist_trgm_ops);
Previously it was possible to specify the `gist` index but not the
custom operator class. The `add_index` call for the above query is:
add_index :users, :name, using: :gist, opclasses: {name: :gist_trgm_ops}
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and abstract `SchemaDumper#extensions` is now an empty method.
Since #30337, every database adapter has its own `SchemaDumper`.
`extensions` are only supported by PostgreSQL database and postgresql database adapter.
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