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Changes the `configs_for` method from using traditional arguments to
using kwargs. This is so I can add the `include_replicas` kwarg without
having to always include `env_name` and `spec_name` in the method call.
`include_replicas` defaults to false because everywhere internally in
Rails we don't want replicas. `configs_for` is for iterating over
configurations to create / run rake tasks, so we really don't ever need
replicas in that case.
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Checks if the config has a "replica" key, if so the configuration is for
a replica database. This is useful for excluding replicas from the
configurations list when creating the rake tasks or running rake tasks.
For example, we don't want to create the primary and primary_readonly.
They're the same database.
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This allows the user to add `replica: true` to the database config to
signify the connection should be treated as readonly. This will be
useful so we can ignore structure dumps or migrations (or creating /
deleting etc) the readonly connection for the databases. These are
paired with a write database which is where the create/drop/migrate
should be run. This allows us to ask the connection if it's for a
replica readonly db or a primary write db.
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These were added for avoiding warnings and for testing in
e4c529ea1d94ef548975e45b91a7fec045aeefbc and 6ea7065a18671872f1486cff3fdaeb4f78fa6332.
Now the default is `:random`, and since the tests added with it are
removed. That config is unnecessary.
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steakknife/steakknife/improve-template-generator-actions
add github to template actions, template actions minor refactor
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Faster permitted_scalar_filter
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When running with code triage and derailed benchmarks and focusing on this file:
Before
16199 /Users/rschneeman/Documents/projects/rails/actionpack/lib/action_controller/metal/strong_parameters.r
After
2280 /Users/rschneeman/Documents/projects/rails/actionpack/lib/action_controller/metal/strong_parameters.rb
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Emit warning for unknown inflection rule when generating model.
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For words like "abuse", Rails cannot derive its singular form from
plural form "abuses" without defining custom inflection rule.
`rails generate model` and its families now emit warning for this case.
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Since #29860, `travel_back` automatically called at the end of the test.
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Typo in form_helpers.md guide
[ci skip]
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Add hooks to ActiveJob around retries and discards
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This restores an ability that `update` with ids on a relation which is
described at https://github.com/rails/rails/issues/33470#issuecomment-411203013.
I personally think that the `update` with two arguments on a relation is
not a designed feature, since that is totally not using a relation
state, and also is not documented.
But removing any feature should not be suddenly happened in a stable
version even if that is not documented.
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Refactor Active Record configurations
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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.
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Do not recompute length
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We can get a speed gain by moving the length calculation and assignment out of the loop.
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eileencodes/add-migrations_paths_option-to-migration-generator
Add migrations_paths option to migration generator
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Adds an option to the migration generator to allow setting the
migrations paths for that migration. This is useful for applications
that use multiple databases and put migrations per database in their own
directories.
```
bin/rails g migration CreateHouses address:string --migrations-paths=db/kingston_migrate
invoke active_record
create db/kingston_migrate/20180830151055_create_houses.rb
```
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[ci skip] Document permitted_scalar_filter
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Use `delete_if` instead of `reject` to avoid an extra allocation.
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`attributes_with_values_for_update` is no longer used since ae2d36c, and
`attributes_with_values_for_create` is internally used only one place.
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It should be done only once in `Persistence` module.
https://github.com/rails/rails/blob/c83e30da27eafde79164ecb376e8a28ccc8d841f/activerecord/lib/active_record/persistence.rb#L721
https://github.com/rails/rails/blob/c83e30da27eafde79164ecb376e8a28ccc8d841f/activerecord/lib/active_record/persistence.rb#L740
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Follow up #32937 [ci skip]
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Context https://github.com/rails/rails/pull/33605#discussion_r210354278
Related to #32937, #33605
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"Configuring Rails Applications" guide [ci skip]
Related to #32937, #33605.
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Remove the reference to the PR.
Usually, we write reference to solved issues in the changelog files.
Related to #33605.
Add missing dots.
Improve formatting.
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Without this, `inverse_associations_test.rb` breaks when running in isolation.
https://travis-ci.org/rails/rails/jobs/422266840#L1894-L1899
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Find inverse associations with plural names
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Previously ActiveRecord couldn't find inverse associations if they were plural, which is a pretty standard use case. This commit changes the behavior to first attempt to find the singular version, then attempt to find the plural version. That makes it work and find plural associations as in the example below:
```
class Post
has_many :comments
end
class Comment
belongs_to :post
end
```
Previously the `:post` association reflection would only attempt to find a `comment` inverse, as opposed to both a `comment` and `comments` inverse.
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20% faster `try`
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Following up on #33747, this takes things a step further by pulling out
the method name from the arguments array, letting us skip an allocation
in the case where there are no arguments -- notably, this also no longer
*requires* the splat to be an array, allowing us to benefit from
optimizations in Jruby (and maybe MRI in the future) of skipping the
array allocation entirely.
Benchmark results:
```
Warming up --------------------------------------
old 179.987k i/100ms
new 199.201k i/100ms
Calculating -------------------------------------
old 3.029M (± 1.6%) i/s - 15.299M in 5.052417s
new 3.657M (± 1.2%) i/s - 18.326M in 5.012648s
Comparison:
new: 3656620.7 i/s
old: 3028848.3 i/s - 1.21x slower
```
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Add "Ruby on Rails 6.0 Release Notes" guide [ci skip]
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This commit adds a skeleton of "Ruby on Rails 6.0 Release Notes".
It isn't a good time to add changelogs' entries to this guide since we can
redo/revert some things till the final release 6.0.
It would be better to do it close to the release.
But we already can add mentions about major features
that have been added to 6.0. I added mention about "Parallel Testing".
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Prevent leaking of user's DB credentials on `rails db:create` failure
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Issue #27852 reports that when `rails db:create` fails, it causes
leaking of user's DB credentials to $stderr.
We print a DB's configuration hash in order to help users more quickly
to figure out what could be wrong with his configuration.
This commit changes message from
"Couldn't create database for #{configuration.inspect}" to
"Couldn't create '#{configuration['database']}' database. Please check your configuration.".
There are two PRs that fixing it #27878, #27879, but they need a bit more work.
I decided help to finish this and added Author of those PRs credit in this commit.
Since it is a security issue, I think we should backport it to
`5-2-stable`, and `5-1-stable`.
Guided by https://edgeguides.rubyonrails.org/maintenance_policy.html#security-issues
Fixes #27852
Closes #27879
Related to #27878
[Alexander Marrs & bogdanvlviv]
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Fewer allocations in caching/fragments.rb
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Instead of using a splat on the head and tail we can mutate the array by flattening 1 level. We get further savings by not allocating another via `compact` but instead by using `compact!`
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Faster time_value.rb
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The multiplication of the value takes a long time when we can instead mutate and use the string value directly.
The `microsec` perf increases speed by 27% in the ideal case (which is the most common).
```
original_string = ".443959"
require 'benchmark/ips'
Benchmark.ips do |x|
x.report("multiply") {
string = original_string.dup
(string.to_r * 1_000_000).to_i
}
x.report("new ") {
string = original_string.dup
if string && string.start_with?(".".freeze) && string.length == 7
string[0] = ''.freeze
string.to_i
end
}
x.compare!
end
# Warming up --------------------------------------
# multiply 125.783k i/100ms
# new 146.543k i/100ms
# Calculating -------------------------------------
# multiply 1.751M (± 3.3%) i/s - 8.805M in 5.033779s
# new 2.225M (± 2.1%) i/s - 11.137M in 5.007110s
# Comparison:
# new : 2225289.7 i/s
# multiply: 1751254.2 i/s - 1.27x slower
```
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32% Faster Object#try
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Here’s the micro benchmark:
```ruby
module ActiveSupport
module NewTryable #:nodoc:
def try(*a, &b)
return unless a.empty? || respond_to?(a.first)
return public_send(*a, &b) unless a.empty?
return nil unless block_given?
return instance_eval(&b) if b.arity == 0
yield self
end
def try!(*a, &b)
return public_send(*a, &b) if !a.empty?
return nil unless block_given?
return instance_eval(&b) if b.arity == 0
yield self
end
end
end
module ActiveSupport
module OldTryable #:nodoc:
def try(*a, &b)
try!(*a, &b) if a.empty? || respond_to?(a.first)
end
def try!(*a, &b)
if a.empty? && block_given?
if b.arity == 0
instance_eval(&b)
else
yield self
end
else
public_send(*a, &b)
end
end
end
end
class FooNew
include ActiveSupport::NewTryable
def foo
end
end
class FooOld
include ActiveSupport::OldTryable
def foo
end
end
foo_new = FooNew.new
foo_old = FooOld.new
require 'benchmark/ips'
Benchmark.ips do |x|
x.report("old") { foo_old.try(:foo) }
x.report("new") { foo_new.try(:foo) }
x.compare!
end
# Warming up --------------------------------------
# old 144.178k i/100ms
# new 172.371k i/100ms
# Calculating -------------------------------------
# old 2.181M (± 8.0%) i/s - 10.813M in 5.001419s
# new 2.889M (± 7.7%) i/s - 14.479M in 5.051760s
# Comparison:
# new: 2888691.7 i/s
# old: 2180740.7 i/s - 1.32x slower
```
Also reduces memory. On https://www.codetriage.com i’m seeing 1.5% fewer object allocations per request (in object count).
Before:
Total allocated: 1014475 bytes (8525 objects)
After:
Total allocated: 1015499 bytes (8389 objects)
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I removed the argument so I should remove the conditional too.
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The test that used this was updated and it's no longer needed.
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Drop load_database_yaml and fix test
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