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-rw-r--r--activerecord/CHANGELOG.md29
-rw-r--r--activerecord/lib/active_record.rb1
-rw-r--r--activerecord/lib/active_record/base.rb1
-rw-r--r--activerecord/lib/active_record/connection_adapters/mysql_adapter.rb4
-rw-r--r--activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb7
-rw-r--r--activerecord/lib/active_record/suppressor.rb55
-rw-r--r--activerecord/test/cases/helper.rb2
-rw-r--r--activerecord/test/cases/suppressor_test.rb21
-rw-r--r--activerecord/test/models/notification.rb2
-rw-r--r--activerecord/test/models/user.rb4
-rw-r--r--activerecord/test/schema/schema.rb4
-rw-r--r--railties/CHANGELOG.md8
-rw-r--r--railties/lib/rails/configuration.rb6
-rw-r--r--railties/test/application/middleware_test.rb16
-rw-r--r--railties/test/isolation/abstract_unit.rb6
15 files changed, 150 insertions, 16 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index a3b680f09d..57d135d1aa 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,32 @@
+* Add `ActiveRecord::Base.suppress` to prevent the receiver from being saved
+ during the given block.
+
+ For example, here's a pattern of creating notifications when new comments
+ are posted. (The notification may in turn trigger an email, a push
+ notification, or just appear in the UI somewhere):
+
+ class Comment < ActiveRecord::Base
+ belongs_to :commentable, polymorphic: true
+ after_create -> { Notification.create! comment: self,
+ recipients: commentable.recipients }
+ end
+
+ That's what you want the bulk of the time. New comment creates a new
+ Notification. But there may well be off cases, like copying a commentable
+ and its comments, where you don't want that. So you'd have a concern
+ something like this:
+
+ module Copyable
+ def copy_to(destination)
+ Notification.suppress do
+ # Copy logic that creates new comments that we do not want triggering
+ # notifications.
+ end
+ end
+ end
+
+ *Michael Ryan*
+
* `:time` option added for `#touch`
Fixes #18905.
diff --git a/activerecord/lib/active_record.rb b/activerecord/lib/active_record.rb
index d9d47c3d99..ef14e065ae 100644
--- a/activerecord/lib/active_record.rb
+++ b/activerecord/lib/active_record.rb
@@ -62,6 +62,7 @@ module ActiveRecord
autoload :Serialization
autoload :StatementCache
autoload :Store
+ autoload :Suppressor
autoload :TableMetadata
autoload :Timestamp
autoload :Transactions
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 100d3780f6..cc03e37a12 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -313,6 +313,7 @@ module ActiveRecord #:nodoc:
include Serialization
include Store
include SecureToken
+ include Suppressor
end
ActiveSupport.run_load_hooks(:active_record, Base)
diff --git a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
index 16f50fc594..64985ee933 100644
--- a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
@@ -328,8 +328,8 @@ module ActiveRecord
def initialize_type_map(m) # :nodoc:
super
- m.register_type %r(datetime)i, Fields::DateTime.new
- m.register_type %r(time)i, Fields::Time.new
+ register_class_with_precision m, %r(datetime)i, Fields::DateTime
+ register_class_with_precision m, %r(time)i, Fields::Time
end
def exec_without_stmt(sql, name = 'SQL') # :nodoc:
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index 5a887ea529..b4fe7506f8 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -477,7 +477,6 @@ module ActiveRecord
register_class_with_limit m, 'varbit', OID::BitVarying
m.alias_type 'timestamptz', 'timestamp'
m.register_type 'date', Type::Date.new
- m.register_type 'time', Type::Time.new
m.register_type 'money', OID::Money.new
m.register_type 'bytea', OID::Bytea.new
@@ -503,10 +502,8 @@ module ActiveRecord
m.alias_type 'lseg', 'varchar'
m.alias_type 'box', 'varchar'
- m.register_type 'timestamp' do |_, _, sql_type|
- precision = extract_precision(sql_type)
- OID::DateTime.new(precision: precision)
- end
+ register_class_with_precision m, 'time', Type::Time
+ register_class_with_precision m, 'timestamp', OID::DateTime
m.register_type 'numeric' do |_, fmod, sql_type|
precision = extract_precision(sql_type)
diff --git a/activerecord/lib/active_record/suppressor.rb b/activerecord/lib/active_record/suppressor.rb
new file mode 100644
index 0000000000..b0b86865fd
--- /dev/null
+++ b/activerecord/lib/active_record/suppressor.rb
@@ -0,0 +1,55 @@
+module ActiveRecord
+ # ActiveRecord::Suppressor prevents the receiver from being saved during
+ # a given block.
+ #
+ # For example, here's a pattern of creating notifications when new comments
+ # are posted. (The notification may in turn trigger an email, a push
+ # notification, or just appear in the UI somewhere):
+ #
+ # class Comment < ActiveRecord::Base
+ # belongs_to :commentable, polymorphic: true
+ # after_create -> { Notification.create! comment: self,
+ # recipients: commentable.recipients }
+ # end
+ #
+ # That's what you want the bulk of the time. New comment creates a new
+ # Notification. But there may well be off cases, like copying a commentable
+ # and its comments, where you don't want that. So you'd have a concern
+ # something like this:
+ #
+ # module Copyable
+ # def copy_to(destination)
+ # Notification.suppress do
+ # # Copy logic that creates new comments that we do not want
+ # # triggering notifications.
+ # end
+ # end
+ # end
+ module Suppressor
+ extend ActiveSupport::Concern
+
+ module ClassMethods
+ def suppress(&block)
+ SuppressorRegistry.suppressed[name] = true
+ yield
+ ensure
+ SuppressorRegistry.suppressed[name] = false
+ end
+ end
+
+ # Ignore saving events if we're in suppression mode.
+ def save!(*args) # :nodoc:
+ SuppressorRegistry.suppressed[self.class.name] ? true : super
+ end
+ end
+
+ class SuppressorRegistry # :nodoc:
+ extend ActiveSupport::PerThreadRegistry
+
+ attr_reader :suppressed
+
+ def initialize
+ @suppressed = {}
+ end
+ end
+end
diff --git a/activerecord/test/cases/helper.rb b/activerecord/test/cases/helper.rb
index f1f927852c..f2ba28a32f 100644
--- a/activerecord/test/cases/helper.rb
+++ b/activerecord/test/cases/helper.rb
@@ -46,7 +46,7 @@ def in_memory_db?
end
def mysql_56?
- current_adapter?(:Mysql2Adapter) &&
+ current_adapter?(:MysqlAdapter, :Mysql2Adapter) &&
ActiveRecord::Base.connection.send(:version).join(".") >= "5.6.0"
end
diff --git a/activerecord/test/cases/suppressor_test.rb b/activerecord/test/cases/suppressor_test.rb
new file mode 100644
index 0000000000..1c449d42fe
--- /dev/null
+++ b/activerecord/test/cases/suppressor_test.rb
@@ -0,0 +1,21 @@
+require 'cases/helper'
+require 'models/notification'
+require 'models/user'
+
+class SuppressorTest < ActiveRecord::TestCase
+ def test_suppresses_creation_of_record_generated_by_callback
+ assert_difference -> { User.count } do
+ assert_no_difference -> { Notification.count } do
+ Notification.suppress { UserWithNotification.create! }
+ end
+ end
+ end
+
+ def test_resumes_saving_after_suppression_complete
+ Notification.suppress { UserWithNotification.create! }
+
+ assert_difference -> { Notification.count } do
+ Notification.create!
+ end
+ end
+end
diff --git a/activerecord/test/models/notification.rb b/activerecord/test/models/notification.rb
new file mode 100644
index 0000000000..b4b4b8f1b6
--- /dev/null
+++ b/activerecord/test/models/notification.rb
@@ -0,0 +1,2 @@
+class Notification < ActiveRecord::Base
+end
diff --git a/activerecord/test/models/user.rb b/activerecord/test/models/user.rb
index 23cd2e0e1c..f5dc93e994 100644
--- a/activerecord/test/models/user.rb
+++ b/activerecord/test/models/user.rb
@@ -2,3 +2,7 @@ class User < ActiveRecord::Base
has_secure_token
has_secure_token :auth_token
end
+
+class UserWithNotification < User
+ after_create -> { Notification.create! message: "A new user has been created." }
+end
diff --git a/activerecord/test/schema/schema.rb b/activerecord/test/schema/schema.rb
index a7d90e3f89..08a16d5c9e 100644
--- a/activerecord/test/schema/schema.rb
+++ b/activerecord/test/schema/schema.rb
@@ -468,6 +468,10 @@ ActiveRecord::Schema.define do
t.string :name
end
+ create_table :notifications, force: true do |t|
+ t.string :message
+ end
+
create_table :numeric_data, force: true do |t|
t.decimal :bank_balance, precision: 10, scale: 2
t.decimal :big_bank_balance, precision: 15, scale: 2
diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index f88e6242c0..74d1ca3bd8 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,3 +1,11 @@
+* `delete` operations in configurations are run last in order to eliminate
+ 'No such middleware' errors when `insert_before` or `insert_after` are added
+ after the `delete` operation for the middleware being deleted.
+
+ Fixes: #16433.
+
+ *Guo Xiang Tan*
+
* Newly generated applications get a `README.md` in Markdown.
*Xavier Noria*
diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index f99cec04c5..76364cea8f 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -35,6 +35,7 @@ module Rails
class MiddlewareStackProxy
def initialize
@operations = []
+ @delete_operations = []
end
def insert_before(*args, &block)
@@ -56,7 +57,7 @@ module Rails
end
def delete(*args, &block)
- @operations << [__method__, args, block]
+ @delete_operations << [__method__, args, block]
end
def unshift(*args, &block)
@@ -64,9 +65,10 @@ module Rails
end
def merge_into(other) #:nodoc:
- @operations.each do |operation, args, block|
+ (@operations + @delete_operations).each do |operation, args, block|
other.send(operation, *args, &block)
end
+
other
end
end
diff --git a/railties/test/application/middleware_test.rb b/railties/test/application/middleware_test.rb
index c64fe082f3..04bd19784a 100644
--- a/railties/test/application/middleware_test.rb
+++ b/railties/test/application/middleware_test.rb
@@ -125,6 +125,22 @@ module ApplicationTests
assert !middleware.include?("ActionDispatch::Static")
end
+ test "can delete a middleware from the stack even if insert_before is added after delete" do
+ add_to_config "config.middleware.delete Rack::Runtime"
+ add_to_config "config.middleware.insert_before(Rack::Runtime, Rack::Config)"
+ boot!
+ assert middleware.include?("Rack::Config")
+ assert_not middleware.include?("Rack::Runtime")
+ end
+
+ test "can delete a middleware from the stack even if insert_after is added after delete" do
+ add_to_config "config.middleware.delete Rack::Runtime"
+ add_to_config "config.middleware.insert_after(Rack::Runtime, Rack::Config)"
+ boot!
+ assert middleware.include?("Rack::Config")
+ assert_not middleware.include?("Rack::Runtime")
+ end
+
test "includes exceptions middlewares even if action_dispatch.show_exceptions is disabled" do
add_to_config "config.action_dispatch.show_exceptions = false"
boot!
diff --git a/railties/test/isolation/abstract_unit.rb b/railties/test/isolation/abstract_unit.rb
index 5be321ecf2..63209559d7 100644
--- a/railties/test/isolation/abstract_unit.rb
+++ b/railties/test/isolation/abstract_unit.rb
@@ -277,12 +277,6 @@ module TestHelpers
end
end
- def gsub_app_file(path, regexp, *args, &block)
- path = "#{app_path}/#{path}"
- content = File.read(path).gsub(regexp, *args, &block)
- File.open(path, 'wb') { |f| f.write(content) }
- end
-
def remove_file(path)
FileUtils.rm_rf "#{app_path}/#{path}"
end