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This reverts commit 9dc8aef084fc5ae7e3a396dd098d89da93d06fda, reversing
changes made to 02e8dae6279ea25312293a3eca777faf35139c4c.
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Rename the I18n keys for associations' restrict_dependent_destroy errors
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restrict_dependent_destroy errors
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if belongs to model with touch option on touch
Closes #11288
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neerajdotname/delete_all_should_not_call_callbacks
Do not invoke callbacks when delete_all is called
Conflicts:
activerecord/CHANGELOG.md
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Method `delete_all` should not be invoking callbacks and this
feature was deprecated in Rails 4.0. This is being removed.
`delete_all` will continue to honor the `:dependent` option. However
if `:dependent` value is `:destroy` then the default deletion
strategy for that collection will be applied.
User can also force a deletion strategy by passing parameter to
`delete_all`. For example you can do `@post.comments.delete_all(:nullify)`
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Deprecated options `delete_sql`, `insert_sql`, `finder_sql` and `counter_sql`
have been deleted.
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The previous implementation was necessary in order to support stuff
like:
class Post < ActiveRecord::Base
default_scope where(published: true)
scope :ordered, order("created_at")
end
If we didn't evaluate the default scope at the last possible moment
before sending the SQL to the database, it would become impossible to
do:
Post.unscoped.ordered
This is because the default scope would already be bound up in the
"ordered" scope, and therefore wouldn't be removed by the
"Post.unscoped" part.
In 4.0, we have deprecated all "eager" forms of scopes. So now you must
write:
class Post < ActiveRecord::Base
default_scope { where(published: true) }
scope :ordered, -> { order("created_at") }
end
This prevents the default scope getting bound up inside the "ordered"
scope, which means we can now have a simpler/better/more natural
implementation of default scoping.
A knock on effect is that some things that didn't work properly now do.
For example it was previously impossible to use #except to remove a part
of the default scope, since the default scope was evaluated after the
call to #except.
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For example:
class Post < ActiveRecord::Base
default_scope -> { where published: true }
end
class Comment
belongs_to :post
end
When calling `Comment.join(:post)`, we expect to receive only
comments on published posts, since that is the default scope for
posts.
Before this change, the default scope from `Post` was not applied,
so we'd get comments on unpublished posts.
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currently `post.comments.find(Comment.first.id)` would load all
comments for the given post to set the inverse association.
This has a huge performance penalty. Because if post has 100k
records and all these 100k records would be loaded in memory
even though the comment id was supplied.
Fix is to use in-memory records only if loaded? is true. Otherwise
load the records using full sql.
Fixes #10509
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This reverts commit 2b817a5e89ac0e7aeb894a40ae7151a0cf3cef16, reversing
changes made to 353a398bee68c5ea99d76ac7601de0a5fef6f4a5.
Conflicts:
activerecord/CHANGELOG.md
Reason: the build broke
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currently `post.comments.find(Comment.first.id)` would load all
comments for the given post to set the inverse association.
This has a huge performance penalty. Because if post has 100k
records and all these 100k records would be loaded in memory
even though the comment id was supplied.
Fix is to use in-memory records only if loaded? is true. Otherwise
load the records using full sql.
Fixes #10509
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Conflicts:
guides/source/upgrading_ruby_on_rails.md
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of using +inverse_of: false+ option. Changing the documentation and
adding a CHANGELOG entry for the automatic inverse detection feature.
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When removing records from a `has_many` association it used
the `primary_key` defined on the association.
Our test suite didn't fail because on all occurences of `:primary_key`,
the specified column was available in both tables. This prevented the
code from raising an exception but it still behaved badly.
I added a test-case to prevent regressions that failed with:
```
1) Error:
HasManyAssociationsTest#test_has_many_assignment_with_custom_primary_key:
ActiveRecord::StatementInvalid: SQLite3::SQLException: no such column: essays.first_name: UPDATE "essays" SET "writer_id" = NULL WHERE "essays"."writer_id" = ? AND "essays"."first_name" IS NULL
```
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