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* Use Ids instead of memory addresses when displaying references in scaffold views.
Fixes #29200.
*Rasesh Patel*
* Adds support for multiple databases to `rails db:migrate:status`.
Subtasks are also added to get the status of individual databases (eg. `rails db:migrate:status:animals`).
*Gannon McGibbon*
* Use Webpacker by default to manage app-level JavaScript through the new app/javascript directory.
Sprockets is now solely in charge, by default, of compiling CSS and other static assets.
Action Cable channel generators will create ES6 stubs rather than use CoffeeScript.
Active Storage, Action Cable, Turbolinks, and Rails-UJS are loaded by a new application.js pack.
Generators no longer generate JavaScript stubs.
*DHH*, *Lachlan Sylvester*
* Refactors `migrations_paths` command option in generators
to `database` (aliased as `db`). Now, the migrations paths
will be read from the specified database configuration in the
current environment.
```
bin/rails g model Chair brand:string --database=kingston
invoke active_record
create db/kingston_migrate/20180830151055_create_chairs.rb
```
`--database` can be used with the migration, model, and scaffold generators.
*Gannon McGibbon*
* Adds an option to the model 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 model Room capacity:integer --migrations-paths=db/kingston_migrate
invoke active_record
create db/kingston_migrate/20180830151055_create_rooms.rb
```
Because rails scaffolding uses the model generator, you can
also specify migrations paths with the scaffold generator.
*Gannon McGibbon*
* Raise an error when "recyclable cache keys" are being used by a cache store
that does not explicitly support it. Custom cache keys that do support this feature
can bypass this error by implementing the `supports_cache_versioning?` method on their
class and returning a truthy value.
*Richard Schneeman*
* Support environment specific credentials file.
For `production` environment look first for `config/credentials/production.yml.enc` file that can be decrypted by
`ENV["RAILS_MASTER_KEY"]` or `config/credentials/production.key` master key.
Edit given environment credentials file by command `rails credentials:edit --environment production`.
Default paths can be overwritten by setting `config.credentials.content_path` and `config.credentials.key_path`.
*Wojciech Wnętrzak*
* Make `ActiveSupport::Cache::NullStore` the default cache store in the test environment.
*Michael C. Nelson*
* Emit warning for unknown inflection rule when generating model.
*Yoshiyuki Kinjo*
* Add `--migrations_paths` option to migration generator.
If you're using multiple databases and have a folder for each database
for migrations (ex db/migrate and db/new_db_migrate) you can now pass the
`--migrations_paths` option to the generator to make sure the the migration
is inserted into the correct folder.
```
rails g migration CreateHouses --migrations_paths=db/kingston_migrate
invoke active_record
create db/kingston_migrate/20180830151055_create_houses.rb
```
*Eileen M. Uchitelle*
* Deprecate `rake routes` in favor of `rails routes`.
*Yuji Yaginuma*
* Deprecate `rake initializers` in favor of `rails initializers`.
*Annie-Claude Côté*
* Deprecate `rake dev:cache` in favor of `rails dev:cache`.
*Annie-Claude Côté*
* Deprecate `rails notes` subcommands in favor of passing an `annotations` argument to `rails notes`.
The following subcommands are replaced by passing `--annotations` or `-a` to `rails notes`:
- `rails notes:custom ANNOTATION=custom` is deprecated in favor of using `rails notes -a custom`.
- `rails notes:optimize` is deprecated in favor of using `rails notes -a OPTIMIZE`.
- `rails notes:todo` is deprecated in favor of using`rails notes -a TODO`.
- `rails notes:fixme` is deprecated in favor of using `rails notes -a FIXME`.
*Annie-Claude Côté*
* Deprecate `SOURCE_ANNOTATION_DIRECTORIES` environment variable used by `rails notes`
through `Rails::SourceAnnotationExtractor::Annotation` in favor of using `config.annotations.register_directories`.
*Annie-Claude Côté*
* Deprecate `rake notes` in favor of `rails notes`.
*Annie-Claude Côté*
* Don't generate unused files in `app:update` task.
Skip the assets' initializer when sprockets isn't loaded.
Skip `config/spring.rb` when spring isn't loaded.
Skip yarn's contents when yarn integration isn't used.
*Tsukuru Tanimichi*
* Make the master.key file read-only for the owner upon generation on
POSIX-compliant systems.
Previously:
$ ls -l config/master.key
-rw-r--r-- 1 owner group 32 Jan 1 00:00 master.key
Now:
$ ls -l config/master.key
-rw------- 1 owner group 32 Jan 1 00:00 master.key
Fixes #32604.
*Jose Luis Duran*
* Deprecate support for using the `HOST` environment to specify the server IP.
The `BINDING` environment should be used instead.
Fixes #29516.
*Yuji Yaginuma*
* Deprecate passing Rack server name as a regular argument to `rails server`.
Previously:
$ bin/rails server thin
There wasn't an explicit option for the Rack server to use, now we have the
`--using` option with the `-u` short switch.
Now:
$ bin/rails server -u thin
This change also improves the error message if a missing or mistyped rack
server is given.
*Genadi Samokovarov*
* Add "rails routes --expanded" option to output routes in expanded mode like
"psql --expanded". Result looks like:
```
$ rails routes --expanded
--[ Route 1 ]------------------------------------------------------------
Prefix | high_scores
Verb | GET
URI | /high_scores(.:format)
Controller#Action | high_scores#index
--[ Route 2 ]------------------------------------------------------------
Prefix | new_high_score
Verb | GET
URI | /high_scores/new(.:format)
Controller#Action | high_scores#new
```
*Benoit Tigeot*
* Rails 6 requires Ruby 2.4.1 or newer.
*Jeremy Daer*
Please check [5-2-stable](https://github.com/rails/rails/blob/5-2-stable/railties/CHANGELOG.md) for previous changes.
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