| Commit message (Collapse) | Author | Age | Files | Lines |
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This commit fixes two regressions introduced in cafe31a078 where
newly created finder methods #second, #third, #forth, and #fifth
caused a NoMethodError error on reload associations and where we
were pulling the wrong element out of cached associations.
Examples:
some_book.authors.reload.second
# Before
# => NoMethodError: undefined method 'first' for nil:NilClass
# After
# => #<Author id: 2, name: "Sally Second", ...>
some_book.first.authors.first
some_book.first.authors.second
# Before
# => #<Author id: 1, name: "Freddy First", ...>
# => #<Author id: 1, name: "Freddy First", ...>
# After
# => #<Author id: 1, name: "Freddy First", ...>
# => #<Author id: 2, name: "Sally Second", ...>
Fixes #13783.
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This commit bring the famous ordinal Array instance methods defined
in ActiveSupport into ActiveRecord as fully-fledged finders.
These finders ensure a default ascending order of the table's primary
key, and utilize the OFFSET SQL verb to locate the user's desired
record. If an offset is defined in the query, calling #second adds
to the offset to get the actual desired record.
Fixes #13743.
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Refs #13658
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Closes #7441
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* master: (23 commits)
Escape the parentheses in the default function regexp
Update docs on Tilt::Template in Asset Pipeline guide
Fix loading a sql structure file on postgres when the file's path has whitespace in it
remove trailing whitespace added with b057765 [ci skip].
Allow unscope to work with `where.not`
Raise an exception when model without primary key calls .find_with_ids
Process sub-query relation's binding values
Instrument the generation of Action Mailer messages
Remove extra variable creation and merge.
In Relation#empty? use #exists? instead of #count.
[ci skip] avoid deprecation warning in sample code
Convert Fixnum into String the port number in MySQL
Fix some indentation on autosave association
Make define_non_cyclic_method simpler
Add Sass gobbling info to asset pipeline docs
Ensure the state is clean after one failure
Fix typo in form_helper.rb
add a new local variable to track if digests are being stored, to ensure the cleanup works correctly
[ci skip] Fix number of methods added by association.
update digestor code based on review
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Conflicts:
activerecord/lib/active_record/relation/finder_methods.rb
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* master: (44 commits)
grammar fix (reverted in e9a1ecd)
Revert "fixed a doc bug in the CHANGELOG.md s/does no longer depend on/no longer depends on/"
Add missed require making `enable_warnings` available
Prepare generated Gemfile for Capistrano 3
Added --model-name option scaffold_controller_generator.
read the association instead of sending
we should have unique sponsorable ids in the fixtures at least
simplify populating the ordering hash
the preloader for the RHS has all the preloaded records, so ask it
only calculate offset index once. #12537
Remove size alias for length validation
Fix `singleton_class?`
Minor Refactoring to `NumberHelper#number_to_human`
`$SAFE = 4;` has been removed with Ruby 2.1
scope_chain should not be mutated for other reflections
Remove `default_primary_key_type` and extract contains of `native_database_types` to a constant since they aren't conditional now in SQLite3Adapter. Makes it more like other adapters.
cleanup changelog entry format. [ci skip]
Extract a function to determine if the default value is a function
Push default_function to superclass to avoid method check
Dump the default function when the primary key is uuid
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Conflicts:
activerecord/lib/active_record/relation/finder_methods.rb
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Includes with persistent select, fixes #11773
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was overwritten.
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I don't really like passing the block, but this seems easiest for now
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This fixes a regression. The documentation said in its introduction
paragraph that the method returns truthy/falsy, but then below it
was said that if there were no arguments you'd get `true` or `false`.
Also when the argument is exactly `false` a singleton is documented
to be returned.
The method was not returning the singletons so it didn't conform to
those special cases.
The best solution here seems to be to just return singletons in all
cases. This solution is backwards compatible. Also, the contract
has been revised because it has no sense that the predicate varies
that way depending on the input. I bet the previous contract was just
an accident, not something mixed on purpose.
Conflicts:
activerecord/lib/active_record/relation/finder_methods.rb
activerecord/test/cases/finder_test.rb
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Perf ref: https://gist.github.com/vipulnsward/8209749201dfdd678c97
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In 94924dc32baf78f13e289172534c2e71c9c8cade the internal default_scope
implementation has changed making it simpler to follow, meaning that the
old usage of with_default_scope has been removed.
With that, order_values was the same argument for both calls to
find_first_with_limit, so remove it and use the existent attribute
for the sake of clarity/simplification.
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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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Refactored ActiveRecord `first` method to get rid of duplication.
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Conflicts:
guides/source/upgrading_ruby_on_rails.md
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up empty, set the relation to NullRelation and rely on its results.
This will help avoid errors like 2fcafee250ee2, because in most cases NullRelation will do the right thing. Minor bonus is avoiding the use of exceptions for flow control.
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#join_associations.
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is always a new object.
Thanks to the #except we call at the top of the method.
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to pair it closely with its motivation.
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used at all on non-postgres adapters.
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The combination of a :uniq => true association and the #distinct call
in #construct_limited_ids_condition combine to create invalid SQL, because
we're explicitly selecting DISTINCT, and also sending #distinct on to AREL,
via the relation#distinct_value.
Rather than build a select distinct clause in #construct_limited_ids_condition,
I set #distinct! and pass just the columns into the select statement.
This requires introducing a #columns_for_distinct method to return the
select columns but not the statement itself.
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inverse_of option. I've also refactored the code for raising a
RecordNotFound exception when searching for records with ids.
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Closes #3313
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