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Closes #7441
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Closes #13146.
This fixes an error when using:
```
change_colum :table, :column, :bigint, array: true
```
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Callback caller class uses `after_initialize`,
but Callback callee defines `after_find`.
Current sample code causes following error.
NoMethodError: undefined method `after_initialize' for #<EncryptionWrapper:0x007fe4931fa5c0>
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already have cache true.
This commit takes into account the last cache_enabled value, before clearing query_cache.
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Fixture files are passed through an ERB renderer before being read as
YAML. The rendering is currently done in the context of the main object,
so method definitons leak into other fixtures, and there is no clean
place to define fixture helpers.
After this commit, the ERB renderer will use a new subclass of
ActiveRecord::FixtureSet.context_class each time a fixture is rendered.
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Typo fixes [ci skip]
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Previously, the `has_one` macro incorrectly accepts the `counter_cache` option
due to a bug, although that options was never supported nor functional on
`has_one` and `has_one ... through` relationships. It now correctly raises an
`ArgumentError` when passed that option.
For reference, this bug was introduced in 52f8e4b9.
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This method is not using the block variable directly since it is calling
yield
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Remove `DatabaseStatements#case_sensitive_equality_operator`. It has been deprecated already.
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deprecated already.
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#type_cast - improve performance & readability
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also clarify native rename_index support is >= 5.7, not > 5.7
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laurocaetano/fix-uniqueness-validation-for-aliased-attribute
Fix bug when validating the uniqueness of an aliased attribute.
Conflicts:
activerecord/CHANGELOG.md
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This prevents the following error when a MySQL index on a foreign key
column is renamed:
```
ActiveRecord::StatementInvalid: Mysql2::Error: Cannot drop index 'index_engines_on_car_id': needed in a foreign key constraint: DROP INDEX `index_engines_on_car_id` ON `engines`
```
refs: #13038.
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Fixes #12812
Raise `ActiveRecord::RecordNotDestroyed` when a child marked with
`dependent: destroy` can't be destroyed.
The following code:
```ruby
class Post < ActiveRecord::Base
has_many :comments, dependent: :destroy
end
class Comment < ActiveRecord::Base
before_destroy do
return false
end
end
post = Post.create!(comments: [Comment.create!])
post.comments = [Comment.create!]
````
would result in a `post` with two `comments`.
With this commit, the same code would raise a `RecordNotDestroyed`
exception, keeping the `post` with the same `comment`.
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Conflicts:
activesupport/lib/active_support/core_ext/hash/deep_merge.rb
activesupport/lib/active_support/core_ext/hash/keys.rb
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According to our guideline, we leave 1 space between `#` and `=>`, so we
want `# =>` instead of `#=>`.
Thanks to @fxn for the suggestion.
[ci skip]
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kamipo/call_initialize_schema_migrations_table_from_migration
Use `SchemaStatements#initialize_schema_migrations_table` instead of `ActiveRecord::SchemaMigration.create_table`.
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`ActiveRecord::SchemaMigration.create_table`.
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I'm pretty confused about the addition of this method. The documentation
says that it was intended to allow the removal of values from the
default scope (in contrast to #except). However it behaves exactly the
same as except: https://gist.github.com/jonleighton/7537008 (other than
having a slightly enhanced syntax).
The removal of the default scope is allowed by
94924dc32baf78f13e289172534c2e71c9c8cade, which was not a change we
could make until 4.1 due to the need to deprecate things. However after
that change #unscope still gives us nothing that #except doesn't already
give us.
However there *is* a desire to be able to unscope stuff in a way that
persists across merges, which would allow associations to be defined
which unscope stuff from the default scope of the associated model. E.g.
has_many :comments, -> { unscope where: :trashed }
So that's what this change implements. I've also corrected the
documentation. I removed the guide references to #except as I think
unscope really supercedes #except now.
While we're here, there's also a potential desire to be able to write
this:
has_many :comments, -> { unscoped }
However, it doesn't make sense and would not be straightforward to
implement. While with #unscope we're specifying exactly what we want to
be removed from the relation, with "unscoped" we're just saying that we
want it to not have some things which were added earlier on by the
default scope. However in the case of an association, we surely don't
want *all* conditions to be removed, otherwise the above would just
become "SELECT * FROM comments" with no foreign key constraint.
To make the above work, we'd have to somehow tag the relation values
which get added when evaluating the default scope in order to
differentiate them from other relation values. Which is way too much
complexity and therefore not worth it when most use cases can be
satisfied with unscope.
Closes #10643, #11061.
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This fixes a bug when merging relations of different classes.
```
Given:
Post.joins(:author).merge(Author.order(name: :desc)).to_sql
Before:
SELECT "posts".* FROM "posts"
INNER JOIN "authors" ON "authors"."id" = "posts"."author_id"
ORDER BY "posts"."name" DESC
After:
SELECT "posts".* FROM "posts"
INNER JOIN "authors" ON "authors"."id" = "posts"."author_id"
ORDER BY "authors"."name" DESC
```
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This reverts commit 22f80ae57b26907f662b7fd50a7270a6381e527e.
See
https://github.com/rails/rails/commit/22f80ae57b26907f662b7fd50a7270a6381e527e#commitcomment-4640676
Conflicts:
activerecord/CHANGELOG.md
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Checks to see if the record contains the foreign_key to set the inverse automatically
Conflicts:
activerecord/CHANGELOG.md
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automatically
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dougbarth/dont_swallow_exceptions_during_transactional_statements_in_mysql
Don't swallow exceptions in transctional statements
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The MySQL connection adapater swallows all StandardError exceptions,
which includes Mysql::Error and Mysql2::Error. The comment in the
exception clause claims errors thrown here indicate that transactions
aren't supported by the server but that isn't necessarily true. It's
possible the MySQL server has gone away and swallowing a failed commit
may let the application return a successful response when the data has
not been saved. Also, replication libraries like Galera require that the
application handle exceptions thrown at BEGIN/COMMIT.
I'm unable to determine what version of MySQL threw an exception for
transactional statements. I tried as far back as 3.23.49 with InnoDB
disabled but BEGIN & COMMIT statements do not throw an error. If there's
a real case for this logic to continue, we could instead push this
behavior into a configuration setting.
The exception swallowing has been there since the beginning:
db045dbbf60b53dbe013ef25554fd013baf88134
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Explicitly exit with status "1" for create and drop task failures
Conflicts:
activerecord/CHANGELOG.md
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* A non-zero exit status allows subsequent shell commands to be chained
together such as: `rake db:reset test:prepare && rspec && cap deploy`
(if you're feeling brave :)
* Any exceptions raised during the `create` and `drop` tasks are caught
in order to print a "pretty" message to the user. Unfortunately doing
so prevents rake from aborting with a non-zero exit status to the shell.
* Therefore we re-raise the exceptions after the "pretty" message and
re-catch them in the task.
* From the task we explicitly exit with a non-zero status. This method
was chosen (rather than just letting rake fail from the exception) so
that the backtrace is suppressed and the output to stderr is
unchanged.
* Update activerecord CHANGELOG
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association empty?/any? predicates any more (there is still a problem when select is applied to a relation, or if you try association#exists? -- but its easier to work around)
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Addendum to #12891
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* Fix incorrectly named tests
* Restore Object#to_param behavior
* Ensure param is derived from a squished and truncated string
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Also dup `column_types` in AR::Result `initialize_copy`
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