| Commit message (Collapse) | Author | Age | Files | Lines |
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samdec/multiple-has-one-through-associations-build-bug
Fix .new with multiple through associations
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This fixes a bug with building an object that has multiple
`has_many :through` associations through the same object.
Previously, when building the object via .new, the intermediate
object would be created instead of just being built.
Here's an example:
Given a GameBoard, that has_one Owner and Collection through Game.
The following line would cause a game object to be created in the
database.
GameBoard.new(owner: some_owner, collection: some_collection)
Whereas, if passing only one of those associations into `.new` would
cause the Game object to be built and not created in the database.
Now the above code will only build the Game object, and not save it.
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So `target.is_a?(Array)` is meaningless, and just use `target.empty?`
instead of `target.blank?`.
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Add `touch_all` method to `ActiveRecord::Relation`
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Allow `primary_key` argument to `empty_insert_statement_value`
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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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Return back "/" to the end of RAILS_GEM_ROOT
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- The "/" was removed in 40bdbce191ad90dfea43dad51fac5c4726b89392 during
refactoring. It may cause regression since looks like was added
intentionaly because it is possible that a name of any another gem
can start with /rails/, so slash was added to ensure that it is "rails"
gem.
I would like to backport this to `5-2-stable` too.
- Use `__dir__` instead of `__FILE__`. Follow up #29176.
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The extracted method is used for `CollectionCacheAssociationLoading`,
still not public API.
[ci skip]
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This was added in 280587588aba6ce13717cd6679e3f2b43d287443, but has been
unused since 392eeecc11a291e406db927a18b75f41b2658253.
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This commit fixes all references in the codebase missing a trailing :,
which causes the nodoc not to actually work :) [skip ci]
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Ok so apparently you can not just have a `default:` that manually is
merged in with YAML but you can also have a special "shared" config that
is automatically merged.
Example:
```
shared:
adapter: mysql2
host: <%= ENV["DB_HOST"] || "localhost" %>
username: root
connect_timeout: 0
pool: 100
reconnect: true
development:
database: development_db
adapter: mysql2
```
To fix, only create a DatabaseConfig object when an adapter, database,
or URL are present.
The merging behavior for `shared` doesn't work with a 3-tier config. I
don't think it worked before this change either - since Rails doesn't
know which point to merge it in. That's something we may have to fix
with the refactoring I'm working on.
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effect the arel and the arel may already be generated by fresh_when
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This was causing single db applications to have rake tasks named
`db:create:primary`. These tasks are only useful to multiple database
applications so they shouldn't be generated.
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Pass the spec name to load_schema in order to load from the correct
structure file when there are multiple databases
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`changed_attribute_names_to_save` is called in `keys_for_partial_write`,
which is called on every save when partial writes are enabled.
We can avoid generating the full changes hash by asking the mutation
tracker for just the names of the changed attributes. At minimum this
saves one array allocation per attribute, but will also avoid calling
`Attribute#original_value` which is expensive for serialized attributes.
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Bring back private class methods accessibility in named scope
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The receiver in a scope was changed from `klass` to `relation` itself
for all scopes (named scope, default_scope, and association scope)
behaves consistently.
In addition. Before 5.2, if both an AR model class and a Relation
instance have same named methods (e.g. `arel_attribute`,
`predicate_builder`, etc), named scope doesn't respect relation instance
information.
For example:
```ruby
class Post < ActiveRecord::Base
has_many :comments1, class_name: "RecentComment1"
has_many :comments2, class_name: "RecentComment2"
end
class RecentComment1 < ActiveRecord::Base
self.table_name = "comments"
default_scope { where(arel_attribute(:created_at).gteq(2.weeks.ago)) }
end
class RecentComment2 < ActiveRecord::Base
self.table_name = "comments"
default_scope { recent_updated }
scope :recent_updated, -> { where(arel_attribute(:updated_at).gteq(2.weeks.ago)) }
end
```
If eager loading `Post.eager_load(:comments1, :comments2).to_a`,
`:comments1` (default_scope) respects aliased table name, but
`:comments2` (using named scope) may not work correctly since named
scope doesn't respect relation instance information. See also 801ccab.
But this is a breaking change between releases without deprecation.
I decided to bring back private class methods accessibility in named
scope.
Fixes #31740.
Fixes #32331.
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ccea4cf broke multiple database structure:dump, the current_config line
should have been deleted instead. I'm struggling to write a test for
this since the confings are passed from rake to the structure_dump
method rather than the other way around. Hoping to come up with a test
while I work on structure:load commands for multiple databases.
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2.6 warnings: passing splat keyword arguments as a single Hash
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Ruby 2.6.0 warns about this.
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Optimize the code inside AR::QueryCache middleware
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It is wrongly appeared as instance public methods in the doc.
http://api.rubyonrails.org/v5.1.6/classes/ActionCable/Channel/Callbacks.html
http://api.rubyonrails.org/v5.1.6/classes/ActiveRecord/Timestamp.html
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Remove `ForeignKeys` module which was introduced at #32299
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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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An entry in `ActiveRecord::Base.configurations` can either be a
connection spec ("two-level") or a hash of specs ("three-level").
We were detecting two-level configurations by looking for the `database`
key, but the database can also be specified as part of the `url` key,
which meant we incorrectly treated those configurations as three-level.
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Use current_config in structure_dump
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This looks like a typo from 0f0aa6a275876502e002c054896734d6536ba5cd
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Remove expired explanation [ci skip]
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Override callback doesn't work anymore.
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Don't unset foreign key when preloading missing record
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When a belongs to association's target is set, its foreign key is now
updated to match the new target. This is the correct behaviour when a
new record is assigned, but not when the existing record is preloaded.
As long as we mark the association as loaded, we can skip setting the
target when the record is missing and avoid clobbering the foreign key.
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Previously `relation.all` behaves as `relation.scoping { klass.all }`.
But it is just enough to `relation.spawn`.
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Fix deprecation warnings from with_lock
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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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Part 1 Easy Multi db in Rails: Add basic rake tasks for multi db setup
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Moves the configs_for and DatabaseConfig struct into it's own file. I
was considering doing this in a future refactoring but our set up forced
me to move it now. You see there are `mattr_accessor`'s on the Core
module that have default settings. For example the `schema_format`
defaults to Ruby. So if I call `configs_for` or any methods in the Core
module it will reset the `schema_format` to `:ruby`. By moving it to
it's own class we can keep the logic contained and avoid this
unfortunate issue.
The second change here does a double loop over the yaml files. Bear with
me...
Our tests dictate that we need to load an environment before our rake
tasks because we could have something in an environment that the
database.yml depends on. There are side-effects to this and I think
there's a deeper bug that needs to be fixed but that's for another
issue. The gist of the problem is when I was creating the dynamic rake
tasks if the yaml that that rake task is calling evaluates code (like
erb) that calls the environment configs the code will blow up because
the environment is not loaded yet.
To avoid this issue we added a new method that simply loads the yaml and
does not evaluate the erb or anything in it. We then use that yaml to
create the task name. Inside the task name we can then call
`load_config` and load the real config to actually call the code
internal to the task. I admit, this is gross, but refactoring can't all
be pretty all the time and I'm working hard with `@tenderlove` to
refactor much more of this code to get to a better place re connection
management and rake tasks.
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Adds the ability to dump the schema or structure files for mulitple
databases. Loops through the configs for a given env and sets a filename
based on the format, then establishes a connection for that config and
dumps into the file.
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