| Commit message (Collapse) | Author | Age | Files | Lines |
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Follow up of #19171 and #26825.
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`foreign_key`, `json` and `virtual` are also available.
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The merging order was accidentally changed at #32447. The original
intention is force `drop_table ... if_exists: true`. #28070.
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https://github.com/sparklemotion/sqlite3-ruby/blob/v1.3.13/lib/sqlite3/statement.rb#L101-L104
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There's no need to wrap the statement in a hash with a single key.
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to support Oracle database support identity data type
Oracle database does not support `INSERT .. DEFAULT VALUES`
then every insert statement needs at least one column name specified.
When `prefetch_primary_key?` returns `true` insert statement
always have the primary key name since the primary key value is selected
from the associated sequence. However, supporting identity data type
will make `prefetch_primary_key?` returns `false`
then no primary key column name added.
As a result, `empty_insert_statement_value` raises `NotImplementedError`
To address this error `empty_insert_statement_value` can take
one argument `primary_key` to generate insert statement like this.
`INSERT INTO "POSTS" ("ID") VALUES(DEFAULT)`
It needs arity change for the public method but no actual behavior changes for the bundled adapters.
Oracle enhanced adapter `empty_insert_statement_value` implementation will be like this:
```
def empty_insert_statement_value(primary_key)
raise NotImplementedError unless primary_key
"(#{quote_column_name(primary_key)}) VALUES(DEFAULT)"
end
```
[Raise NotImplementedError when using empty_insert_statement_value with Oracle](https://github.com/rails/rails/pull/28029)
[Add support for INSERT .. DEFAULT VALUES](https://community.oracle.com/ideas/13845)
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This was added in 280587588aba6ce13717cd6679e3f2b43d287443, but has been
unused since 392eeecc11a291e406db927a18b75f41b2658253.
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Ruby 2.6.0 warns about this.
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To solve the problem #32299, just enough to introduce
`fk_ignore_pattern` option.
I don't think there is a need to expose these constants.
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Expose foreign key name ignore pattern in configuration
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This makes more sense, as the foreign key ignore pattern is only used by
the schema dumper.
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When dumping the database schema, Rails will dump foreign key names only
if those names were not generate by Rails. Currently this is determined
by checking if the foreign key name is `fk_rails_` followed by
a 10-character hash.
At [Cookpad](https://github.com/cookpad), we use
[Departure](https://github.com/departurerb/departure) (Percona's
pt-online-schema-change runner for ActiveRecord migrations) to run migrations.
Often, `pt-osc` will make a copy of a table in order to run a long migration
without blocking it. In this copy process, foreign keys are copied too,
but [their name is prefixed with an underscore to prevent name collision
](https://www.percona.com/doc/percona-toolkit/LATEST/pt-online-schema-change.html#cmdoption-pt-online-schema-change-alter-foreign-keys-method).
In the process described above, we often end up with a development
database that contains foreign keys which name starts with `_fk_rails_`.
That name does not match the ignore pattern, so next time Rails dumps
the database schema (eg. when running `rake db:migrate`), our
`db/schema.rb` file ends up containing those unwanted foreign key names.
This also produces an unwanted git diff that we'd prefer not to commit.
In this PR, I'd like to suggest a way to expose the foreign key name
ignore pattern to the Rails configuration, so that individual projects
can decide on a different pattern of foreign keys that will not get
their names dumped in `schema.rb`.
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Fix default connection handling with three-tier config
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If you had a three-tier config, the `establish_connection` that's called
in the Railtie on load can't figure out how to access the default
configuration.
This is because Rails assumes that the config is the first value in the
hash and always associated with the key from the environment. With a
three tier config however we need to go one level deeper.
This commit includes 2 changes. 1) removes a line from `resolve_all`
which was parsing out the the environment from the config so instead of
getting
```
{
:development => {
:primary => {
:database => "whatever"
}
},
:animals => {
:database => "whatever-animals"
}
},
etc with test / prod
}
```
We'd instead end up with a config that had no attachment to it's
envioronment.
```
{
:primary => {
:database => "whatever"
}
:animals => {
:database => "whatever-animals"
}
etc - without test and prod
}
```
Not only did this mean that Active Record didn't know how to establish a
connection, it didn't have the other necessary configs along with it in
the configs list.
So fix this I removed the line that deletes these configs.
The second thing this commit changes is adding this line to
`establish_connection`
```
spec = spec[spec_name.to_sym] if spec[spec_name.to_sym]
```
When you have a three-tier config and don't pass any hash/symbol/env etc
to `establish_connection` the resolver will automatically return both
the primary and secondary (in this case animals db) configurations.
We'll get an `database configuration does not specify adapter` error
because AR will try to establish a connection on the `primary` key
rather than the `primary` key's config. It assumes that the
`development` or default env automatically will return a config hash,
but with a three-tier config we actually get a key and config `primary
=> config`.
This fix is a bit of a bandaid because it's not the "correct" way to
handle this situation, but it does solve our immediate problem. The new
code here is saying "if the config returned from the resolver (I know
it's called spec in here but we interchange our meanings a LOT and what
is returned is a three-tier config) has a key matching the "primary"
spec name, grab the config from the spec and pass that to the
estalbish_connection method".
This works because if we pass `:animals` or a hash, or `:primary` we'll
already have the correct configuration to connect with.
This fixes the case where we want Rail to connect with the default
connection.
Coming soon is a refactoring that should eliminate the need to do this
but I need this fix in order to write the multi-db rake tasks that I
promised in my RailsConf submission. `@tenderlove` and I are working on
the refactoring of the internals for connection management but it won't
be ready for a few weeks and this issue has been blocking progress.
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In #24542, quoted_time was introduced to strip the leading date
component for time columns because it was having a significant
effect in mariadb. However, it assumed that the date component
was always 2000-01-01 which isn't the case, especially if the
source wasn't another time column.
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For legacy reasons Rails stores time columns on sqlite as full
timestamp strings. However because the date component wasn't being
normalized this meant that when they were read back they were being
prefixed with 2001-01-01 by ActiveModel::Type::Time. This had a
twofold result - first it meant that the fast code path wasn't being
used because the string was invalid and second it was corrupting the
second fractional component being read by the Date._parse code path.
Fix this by a combination of normalizing the timestamps on writing
and also changing Active Model to be more lenient when detecting
whether a string starts with a date component before creating the
dummy time value for parsing.
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Ruby 2.4+ provides `Hash#compact` and `Hash#compact!` natively,
so `active_support/core_ext/hash/compact` is no longer necessary.
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Duplicated method name list is no longer needed.
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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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References 89bcca59e91fa9da941de890012872e8288e77b0
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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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@connection.more_results?`
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These are internally used only.
[ci skip]
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Dump correctly index nulls order for PostgreSQL
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Since #29504, mysql2 adapter lost ability to insert zero value on
primary key due to enforce `NO_AUTO_VALUE_ON_ZERO` disabled.
That is for using `DEFAULT` on auto increment column, but we can use
`NULL` instead in that case.
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MySQL supports descending indexes from 8.0.1 onwards:
https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-1.html
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Since #31422, `insert_fixtures` is deprecated.
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It doesn't have to do anything, but it shouldn't fail.
Fixes #31766.
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Postgresql bulk_change_table should flatten procs array
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Build a multi-statement query when inserting fixtures
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- 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
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- 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`
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Don't perform unnecessary check with false, just use true/false values
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@active on SQLite adapter.
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koic/enable_autocorrect_for_lint_end_alignment_cop
Enable autocorrect for `Lint/EndAlignment` cop
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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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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.
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