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-rw-r--r--actionview/lib/action_view/helpers/translation_helper.rb2
-rw-r--r--activerecord/CHANGELOG.md6
-rw-r--r--activerecord/lib/active_record/core.rb2
-rw-r--r--activerecord/lib/active_record/relation/delegation.rb51
-rw-r--r--activerecord/lib/active_record/relation/finder_methods.rb4
-rw-r--r--activerecord/lib/active_record/relation/query_methods.rb28
-rw-r--r--activerecord/lib/active_record/scoping/default.rb9
-rw-r--r--activerecord/test/cases/associations/has_many_through_associations_test.rb4
-rw-r--r--activerecord/test/cases/bind_parameter_test.rb25
-rw-r--r--activerecord/test/cases/relation/select_test.rb5
-rw-r--r--activerecord/test/cases/relations_test.rb32
-rw-r--r--activerecord/test/cases/scoping/default_scoping_test.rb10
-rw-r--r--activerecord/test/cases/serialized_attribute_test.rb34
-rw-r--r--activerecord/test/models/author.rb7
-rw-r--r--activerecord/test/models/developer.rb1
-rw-r--r--activerecord/test/models/post.rb1
-rw-r--r--activerecord/test/models/topic.rb4
-rw-r--r--guides/source/5_2_release_notes.md4
-rw-r--r--guides/source/active_record_querying.md26
19 files changed, 168 insertions, 87 deletions
diff --git a/actionview/lib/action_view/helpers/translation_helper.rb b/actionview/lib/action_view/helpers/translation_helper.rb
index 67c86592b9..8289c806ee 100644
--- a/actionview/lib/action_view/helpers/translation_helper.rb
+++ b/actionview/lib/action_view/helpers/translation_helper.rb
@@ -138,7 +138,7 @@ module ActionView
end
def html_safe_translation_key?(key)
- /([_.]|\b)html\z/.match?(key.to_s)
+ /(?:_|\b)html\z/.match?(key.to_s)
end
end
end
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index ce1f1102d5..0cfaf39281 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -382,6 +382,12 @@
*Federico Martinez*
+* Add `reselect` method. This is a short-hand for `unscope(:select).select(fields)`.
+
+ Fixes #27340.
+
+ *Willian Gustavo Veiga*
+
* Add basic API for connection switching to support multiple databases.
1) Adds a `connects_to` method for models to connect to multiple databases. Example:
diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb
index 18cfac1f2f..eb4b48bc37 100644
--- a/activerecord/lib/active_record/core.rb
+++ b/activerecord/lib/active_record/core.rb
@@ -161,7 +161,7 @@ module ActiveRecord
return super if block_given? ||
primary_key.nil? ||
scope_attributes? ||
- columns_hash.include?(inheritance_column)
+ columns_hash.key?(inheritance_column) && !base_class?
id = ids.first
diff --git a/activerecord/lib/active_record/relation/delegation.rb b/activerecord/lib/active_record/relation/delegation.rb
index f7c3b3783f..7a53a9d1c7 100644
--- a/activerecord/lib/active_record/relation/delegation.rb
+++ b/activerecord/lib/active_record/relation/delegation.rb
@@ -1,5 +1,7 @@
# frozen_string_literal: true
+require "mutex_m"
+
module ActiveRecord
module Delegation # :nodoc:
module DelegateCache # :nodoc:
@@ -31,6 +33,10 @@ module ActiveRecord
super
end
+ def generate_relation_method(method)
+ generated_relation_methods.generate_method(method)
+ end
+
protected
def include_relation_methods(delegate)
superclass.include_relation_methods(delegate) unless base_class?
@@ -39,27 +45,32 @@ module ActiveRecord
private
def generated_relation_methods
- @generated_relation_methods ||= Module.new.tap do |mod|
- mod_name = "GeneratedRelationMethods"
- const_set mod_name, mod
- private_constant mod_name
- end
+ @generated_relation_methods ||= GeneratedRelationMethods.new
end
+ end
+
+ class GeneratedRelationMethods < Module # :nodoc:
+ include Mutex_m
+
+ def generate_method(method)
+ synchronize do
+ return if method_defined?(method)
- def generate_relation_method(method)
if /\A[a-zA-Z_]\w*[!?]?\z/.match?(method)
- generated_relation_methods.module_eval <<-RUBY, __FILE__, __LINE__ + 1
+ module_eval <<-RUBY, __FILE__, __LINE__ + 1
def #{method}(*args, &block)
scoping { klass.#{method}(*args, &block) }
end
RUBY
else
- generated_relation_methods.define_method(method) do |*args, &block|
+ define_method(method) do |*args, &block|
scoping { klass.public_send(method, *args, &block) }
end
end
end
+ end
end
+ private_constant :GeneratedRelationMethods
extend ActiveSupport::Concern
@@ -78,39 +89,17 @@ module ActiveRecord
module ClassSpecificRelation # :nodoc:
extend ActiveSupport::Concern
- included do
- @delegation_mutex = Mutex.new
- end
-
module ClassMethods # :nodoc:
def name
superclass.name
end
-
- def delegate_to_scoped_klass(method)
- @delegation_mutex.synchronize do
- return if method_defined?(method)
-
- if /\A[a-zA-Z_]\w*[!?]?\z/.match?(method)
- module_eval <<-RUBY, __FILE__, __LINE__ + 1
- def #{method}(*args, &block)
- scoping { @klass.#{method}(*args, &block) }
- end
- RUBY
- else
- define_method method do |*args, &block|
- scoping { @klass.public_send(method, *args, &block) }
- end
- end
- end
- end
end
private
def method_missing(method, *args, &block)
if @klass.respond_to?(method)
- self.class.delegate_to_scoped_klass(method)
+ @klass.generate_relation_method(method)
scoping { @klass.public_send(method, *args, &block) }
else
super
diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb
index 91cfc4e849..74f323a278 100644
--- a/activerecord/lib/active_record/relation/finder_methods.rb
+++ b/activerecord/lib/active_record/relation/finder_methods.rb
@@ -7,8 +7,8 @@ module ActiveRecord
ONE_AS_ONE = "1 AS one"
# Find by id - This can either be a specific id (1), a list of ids (1, 5, 6), or an array of ids ([5, 6, 10]).
- # If one or more records can not be found for the requested ids, then RecordNotFound will be raised. If the primary key
- # is an integer, find by id coerces its arguments using +to_i+.
+ # If one or more records can not be found for the requested ids, then ActiveRecord::RecordNotFound will be raised.
+ # If the primary key is an integer, find by id coerces its arguments by using +to_i+.
#
# Person.find(1) # returns the object for ID = 1
# Person.find("1") # returns the object for ID = 1
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb
index f69b85af66..24a50db619 100644
--- a/activerecord/lib/active_record/relation/query_methods.rb
+++ b/activerecord/lib/active_record/relation/query_methods.rb
@@ -240,6 +240,27 @@ module ActiveRecord
self
end
+ # Allows you to change a previously set select statement.
+ #
+ # Post.select(:title, :body)
+ # # SELECT `posts.title`, `posts.body` FROM `posts`
+ #
+ # Post.select(:title, :body).reselect(:created_at)
+ # # SELECT `posts.created_at` FROM `posts`
+ #
+ # This is short-hand for <tt>unscope(:select).select(fields)</tt>.
+ # Note that we're unscoping the entire select statement.
+ def reselect(*args)
+ check_if_method_has_arguments!(:reselect, args)
+ spawn.reselect!(*args)
+ end
+
+ # Same as #reselect but operates on relation in-place instead of copying.
+ def reselect!(*args) # :nodoc:
+ self.select_values = args
+ self
+ end
+
# Allows to specify a group attribute:
#
# User.group(:name)
@@ -1070,14 +1091,17 @@ module ActiveRecord
field = klass.attribute_alias(field) if klass.attribute_alias?(field)
from = from_clause.name || from_clause.value
- if klass.columns_hash.key?(field) &&
- (!from || from == table.name || from == connection.quote_table_name(table.name))
+ if klass.columns_hash.key?(field) && (!from || table_name_matches?(from))
arel_attribute(field)
else
yield
end
end
+ def table_name_matches?(from)
+ /(?:\A|(?<!FROM)\s)(?:\b#{table.name}\b|#{connection.quote_table_name(table.name)})(?!\.)/i.match?(from.to_s)
+ end
+
def reverse_sql_order(order_query)
if order_query.empty?
return [arel_attribute(primary_key).desc] if primary_key
diff --git a/activerecord/lib/active_record/scoping/default.rb b/activerecord/lib/active_record/scoping/default.rb
index 8c612df27a..de75fbe127 100644
--- a/activerecord/lib/active_record/scoping/default.rb
+++ b/activerecord/lib/active_record/scoping/default.rb
@@ -100,7 +100,7 @@ module ActiveRecord
self.default_scopes += [scope]
end
- def build_default_scope(base_rel = nil)
+ def build_default_scope(relation = relation())
return if abstract_class?
if default_scope_override.nil?
@@ -111,15 +111,14 @@ module ActiveRecord
# The user has defined their own default scope method, so call that
evaluate_default_scope do
if scope = default_scope
- (base_rel ||= relation).merge!(scope)
+ relation.merge!(scope)
end
end
elsif default_scopes.any?
- base_rel ||= relation
evaluate_default_scope do
- default_scopes.inject(base_rel) do |default_scope, scope|
+ default_scopes.inject(relation) do |default_scope, scope|
scope = scope.respond_to?(:to_proc) ? scope : scope.method(:call)
- default_scope.merge!(base_rel.instance_exec(&scope))
+ default_scope.instance_exec(&scope) || default_scope
end
end
end
diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb
index 6f23a832ef..67e013c6e0 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -56,11 +56,11 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
end
def test_preload_with_nested_association
- posts = Post.preload(:author, :author_favorites).to_a
+ posts = Post.preload(:author, :author_favorites_with_scope).to_a
assert_no_queries do
posts.each(&:author)
- posts.each(&:author_favorites)
+ posts.each(&:author_favorites_with_scope)
end
end
diff --git a/activerecord/test/cases/bind_parameter_test.rb b/activerecord/test/cases/bind_parameter_test.rb
index b89f054821..03cc0dffbc 100644
--- a/activerecord/test/cases/bind_parameter_test.rb
+++ b/activerecord/test/cases/bind_parameter_test.rb
@@ -54,17 +54,36 @@ if ActiveRecord::Base.connection.prepared_statements
@connection.disable_query_cache!
end
+ def test_statement_cache_with_find
+ @connection.clear_cache!
+
+ assert_equal 1, Topic.find(1).id
+ assert_raises(RecordNotFound) { SillyReply.find(2) }
+
+ topic_sql = cached_statement(Topic, Topic.primary_key)
+ assert_includes statement_cache, to_sql_key(topic_sql)
+
+ e = assert_raise { cached_statement(SillyReply, SillyReply.primary_key) }
+ assert_equal "SillyReply has no cached statement by \"id\"", e.message
+
+ replies = SillyReply.where(id: 2).limit(1)
+ assert_includes statement_cache, to_sql_key(replies.arel)
+ end
+
def test_statement_cache_with_find_by
@connection.clear_cache!
assert_equal 1, Topic.find_by!(id: 1).id
- assert_equal 2, Reply.find_by!(id: 2).id
+ assert_raises(RecordNotFound) { SillyReply.find_by!(id: 2) }
topic_sql = cached_statement(Topic, [:id])
assert_includes statement_cache, to_sql_key(topic_sql)
- e = assert_raise { cached_statement(Reply, [:id]) }
- assert_equal "Reply has no cached statement by [:id]", e.message
+ e = assert_raise { cached_statement(SillyReply, [:id]) }
+ assert_equal "SillyReply has no cached statement by [:id]", e.message
+
+ replies = SillyReply.where(id: 2).limit(1)
+ assert_includes statement_cache, to_sql_key(replies.arel)
end
def test_statement_cache_with_in_clause
diff --git a/activerecord/test/cases/relation/select_test.rb b/activerecord/test/cases/relation/select_test.rb
index dec8a6925d..32e8f473ff 100644
--- a/activerecord/test/cases/relation/select_test.rb
+++ b/activerecord/test/cases/relation/select_test.rb
@@ -11,5 +11,10 @@ module ActiveRecord
expected = Post.select(:title).to_sql
assert_equal expected, Post.select(nil).select(:title).to_sql
end
+
+ def test_reselect
+ expected = Post.select(:title).to_sql
+ assert_equal expected, Post.select(:title, :body).reselect(:title).to_sql
+ end
end
end
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb
index a7f09e6de0..85719cb8d0 100644
--- a/activerecord/test/cases/relations_test.rb
+++ b/activerecord/test/cases/relations_test.rb
@@ -182,27 +182,27 @@ class RelationTest < ActiveRecord::TestCase
end
end
- def test_select_with_original_table_name_in_from
+ def test_select_with_from_includes_original_table_name
relation = Comment.joins(:post).select(:id).order(:id)
- subquery = Comment.from(Comment.table_name).joins(:post).select(:id).order(:id)
+ subquery = Comment.from("#{Comment.table_name} /*! USE INDEX (PRIMARY) */").joins(:post).select(:id).order(:id)
assert_equal relation.map(&:id), subquery.map(&:id)
end
- def test_pluck_with_original_table_name_in_from
+ def test_pluck_with_from_includes_original_table_name
relation = Comment.joins(:post).order(:id)
- subquery = Comment.from(Comment.table_name).joins(:post).order(:id)
+ subquery = Comment.from("#{Comment.table_name} /*! USE INDEX (PRIMARY) */").joins(:post).order(:id)
assert_equal relation.pluck(:id), subquery.pluck(:id)
end
- def test_select_with_quoted_original_table_name_in_from
+ def test_select_with_from_includes_quoted_original_table_name
relation = Comment.joins(:post).select(:id).order(:id)
- subquery = Comment.from(Comment.quoted_table_name).joins(:post).select(:id).order(:id)
+ subquery = Comment.from("#{Comment.quoted_table_name} /*! USE INDEX (PRIMARY) */").joins(:post).select(:id).order(:id)
assert_equal relation.map(&:id), subquery.map(&:id)
end
- def test_pluck_with_quoted_original_table_name_in_from
+ def test_pluck_with_from_includes_quoted_original_table_name
relation = Comment.joins(:post).order(:id)
- subquery = Comment.from(Comment.quoted_table_name).joins(:post).order(:id)
+ subquery = Comment.from("#{Comment.quoted_table_name} /*! USE INDEX (PRIMARY) */").joins(:post).order(:id)
assert_equal relation.pluck(:id), subquery.pluck(:id)
end
@@ -221,13 +221,25 @@ class RelationTest < ActiveRecord::TestCase
def test_select_with_subquery_in_from_does_not_use_original_table_name
relation = Comment.group(:type).select("COUNT(post_id) AS post_count, type")
- subquery = Comment.from(relation).select("type", "post_count")
+ subquery = Comment.from(relation, "grouped_#{Comment.table_name}").select("type", "post_count")
assert_equal(relation.map(&:post_count).sort, subquery.map(&:post_count).sort)
end
def test_group_with_subquery_in_from_does_not_use_original_table_name
relation = Comment.group(:type).select("COUNT(post_id) AS post_count,type")
- subquery = Comment.from(relation).group("type").average("post_count")
+ subquery = Comment.from(relation, "grouped_#{Comment.table_name}").group("type").average("post_count")
+ assert_equal(relation.map(&:post_count).sort, subquery.values.sort)
+ end
+
+ def test_select_with_subquery_string_in_from_does_not_use_original_table_name
+ relation = Comment.group(:type).select("COUNT(post_id) AS post_count, type")
+ subquery = Comment.from("(#{relation.to_sql}) #{Comment.table_name}_grouped").select("type", "post_count")
+ assert_equal(relation.map(&:post_count).sort, subquery.map(&:post_count).sort)
+ end
+
+ def test_group_with_subquery_string_in_from_does_not_use_original_table_name
+ relation = Comment.group(:type).select("COUNT(post_id) AS post_count,type")
+ subquery = Comment.from("(#{relation.to_sql}) #{Comment.table_name}_grouped").group("type").average("post_count")
assert_equal(relation.map(&:post_count).sort, subquery.values.sort)
end
diff --git a/activerecord/test/cases/scoping/default_scoping_test.rb b/activerecord/test/cases/scoping/default_scoping_test.rb
index 6281712df6..e7bdab58c6 100644
--- a/activerecord/test/cases/scoping/default_scoping_test.rb
+++ b/activerecord/test/cases/scoping/default_scoping_test.rb
@@ -408,18 +408,18 @@ class DefaultScopingTest < ActiveRecord::TestCase
end
def test_joins_not_affected_by_scope_other_than_default_or_unscoped
- without_scope_on_post = Comment.joins(:post).to_a
+ without_scope_on_post = Comment.joins(:post).sort_by(&:id)
with_scope_on_post = nil
Post.where(id: [1, 5, 6]).scoping do
- with_scope_on_post = Comment.joins(:post).to_a
+ with_scope_on_post = Comment.joins(:post).sort_by(&:id)
end
- assert_equal with_scope_on_post, without_scope_on_post
+ assert_equal without_scope_on_post, with_scope_on_post
end
def test_unscoped_with_joins_should_not_have_default_scope
- assert_equal SpecialPostWithDefaultScope.unscoped { Comment.joins(:special_post_with_default_scope).to_a },
- Comment.joins(:post).to_a
+ assert_equal Comment.joins(:post).sort_by(&:id),
+ SpecialPostWithDefaultScope.unscoped { Comment.joins(:special_post_with_default_scope).sort_by(&:id) }
end
def test_sti_association_with_unscoped_not_affected_by_default_scope
diff --git a/activerecord/test/cases/serialized_attribute_test.rb b/activerecord/test/cases/serialized_attribute_test.rb
index fa136fe8da..ecf81b2042 100644
--- a/activerecord/test/cases/serialized_attribute_test.rb
+++ b/activerecord/test/cases/serialized_attribute_test.rb
@@ -1,28 +1,29 @@
# frozen_string_literal: true
require "cases/helper"
-require "models/topic"
-require "models/reply"
require "models/person"
require "models/traffic_light"
require "models/post"
-require "bcrypt"
class SerializedAttributeTest < ActiveRecord::TestCase
fixtures :topics, :posts
MyObject = Struct.new :attribute1, :attribute2
- # NOTE: Use a duplicate of Topic so attribute
- # changes don't bleed into other tests
- Topic = ::Topic.dup
+ class Topic < ActiveRecord::Base
+ serialize :content
+ end
+
+ class ImportantTopic < Topic
+ serialize :important, Hash
+ end
teardown do
Topic.serialize("content")
end
def test_serialize_does_not_eagerly_load_columns
- reset_column_information_of(Topic)
+ Topic.reset_column_information
assert_no_queries do
Topic.serialize(:content)
end
@@ -53,10 +54,10 @@ class SerializedAttributeTest < ActiveRecord::TestCase
def test_serialized_attributes_from_database_on_subclass
Topic.serialize :content, Hash
- t = Reply.new(content: { foo: :bar })
+ t = ImportantTopic.new(content: { foo: :bar })
assert_equal({ foo: :bar }, t.content)
t.save!
- t = Reply.last
+ t = ImportantTopic.last
assert_equal({ foo: :bar }, t.content)
end
@@ -371,14 +372,13 @@ class SerializedAttributeTest < ActiveRecord::TestCase
end
def test_serialized_attribute_works_under_concurrent_initial_access
- model = ::Topic.dup
+ model = Class.new(Topic)
- topic = model.last
+ topic = model.create!
topic.update group: "1"
model.serialize :group, JSON
-
- reset_column_information_of(model)
+ model.reset_column_information
# This isn't strictly necessary for the test, but a little bit of
# knowledge of internals allows us to make failures far more likely.
@@ -398,12 +398,4 @@ class SerializedAttributeTest < ActiveRecord::TestCase
# raw string ("1"), or raise an exception.
assert_equal [1] * threads.size, threads.map(&:value)
end
-
- private
-
- def reset_column_information_of(topic_class)
- topic_class.reset_column_information
- # reset original topic to undefine attribute methods
- ::Topic.reset_column_information
- end
end
diff --git a/activerecord/test/models/author.rb b/activerecord/test/models/author.rb
index 3eb8a3a0fa..67be59a1fe 100644
--- a/activerecord/test/models/author.rb
+++ b/activerecord/test/models/author.rb
@@ -217,6 +217,13 @@ class AuthorAddress < ActiveRecord::Base
end
class AuthorFavorite < ActiveRecord::Base
+ belongs_to :author
+ belongs_to :favorite_author, class_name: "Author"
+end
+
+class AuthorFavoriteWithScope < ActiveRecord::Base
+ self.table_name = "author_favorites"
+
default_scope { order(id: :asc) }
belongs_to :author
diff --git a/activerecord/test/models/developer.rb b/activerecord/test/models/developer.rb
index ec48094207..c6574cf6e7 100644
--- a/activerecord/test/models/developer.rb
+++ b/activerecord/test/models/developer.rb
@@ -207,6 +207,7 @@ end
class MultiplePoorDeveloperCalledJamis < ActiveRecord::Base
self.table_name = "developers"
+ default_scope { }
default_scope -> { where(name: "Jamis") }
default_scope -> { where(salary: 50000) }
end
diff --git a/activerecord/test/models/post.rb b/activerecord/test/models/post.rb
index c6eb77dba4..53cbda83ed 100644
--- a/activerecord/test/models/post.rb
+++ b/activerecord/test/models/post.rb
@@ -78,6 +78,7 @@ class Post < ActiveRecord::Base
has_many :comments_with_extend_2, extend: [NamedExtension, NamedExtension2], class_name: "Comment", foreign_key: "post_id"
has_many :author_favorites, through: :author
+ has_many :author_favorites_with_scope, through: :author, class_name: "AuthorFavoriteWithScope", source: "author_favorites"
has_many :author_categorizations, through: :author, source: :categorizations
has_many :author_addresses, through: :author
has_many :author_address_extra_with_address,
diff --git a/activerecord/test/models/topic.rb b/activerecord/test/models/topic.rb
index 0c8880a20e..77101090f2 100644
--- a/activerecord/test/models/topic.rb
+++ b/activerecord/test/models/topic.rb
@@ -119,10 +119,6 @@ class Topic < ActiveRecord::Base
end
end
-class ImportantTopic < Topic
- serialize :important, Hash
-end
-
class DefaultRejectedTopic < Topic
default_scope -> { where(approved: false) }
end
diff --git a/guides/source/5_2_release_notes.md b/guides/source/5_2_release_notes.md
index c5b914fffc..29b355119c 100644
--- a/guides/source/5_2_release_notes.md
+++ b/guides/source/5_2_release_notes.md
@@ -615,6 +615,10 @@ Please refer to the [Changelog][active-record] for detailed changes.
the parent class was getting deleted when the child was not.
([Commit](https://github.com/rails/rails/commit/b0fc04aa3af338d5a90608bf37248668d59fc881))
+* Idle database connections (previously just orphaned connections) are now
+ periodically reaped by the connection pool reaper.
+ ([Commit](https://github.com/rails/rails/pull/31221/commits/9027fafff6da932e6e64ddb828665f4b01fc8902))
+
Active Model
------------
diff --git a/guides/source/active_record_querying.md b/guides/source/active_record_querying.md
index cb738f0657..270696d38d 100644
--- a/guides/source/active_record_querying.md
+++ b/guides/source/active_record_querying.md
@@ -807,6 +807,32 @@ SELECT * FROM articles WHERE id > 10 ORDER BY id DESC LIMIT 20
```
+### `reselect`
+
+The `reselect` method overrides an existing select statement. For example:
+
+```ruby
+Post.select(:title, :body).reselect(:created_at)
+```
+
+The SQL that would be executed:
+
+```sql
+SELECT `posts.created_at` FROM `posts`
+```
+
+In case the `reselect` clause is not used,
+
+```ruby
+Post.select(:title, :body)
+```
+
+the SQL executed would be:
+
+```sql
+SELECT `posts.title`, `posts.body` FROM `posts`
+```
+
### `reorder`
The `reorder` method overrides the default scope order. For example: