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Added option to ActiveRecord::CounterCache methods.

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jtrost authored and kaspth committed Dec 30, 2016
1 parent e42cbb7 commit bf77e641ce807857fcf804250c4f8ce817ae66be
@@ -1,3 +1,10 @@
* Add option to update specified timestamp columns when incrementing,
decrementing, resetting, or updating counter caches.
Fixes #26724.
*Jarred Trost*
* Remove deprecated `#uniq`, `#uniq!`, and `#uniq_value`.
*Ryuta Kamizono*
@@ -12,13 +12,21 @@ module ClassMethods
#
# * +id+ - The id of the object you wish to reset a counter on.
# * +counters+ - One or more association counters to reset. Association name or counter name can be given.
# * <tt>:touch</tt> - Touch timestamp columns when updating.
# Pass +true+ to touch +updated_at+ and/or +updated_on+. Pass a symbol to
# touch that column or an array of symbols to touch just those ones.
#
# ==== Examples
#
# # For Post with id #1 records reset the comments_count
# Post.reset_counters(1, :comments)
def reset_counters(id, *counters)
#
# # For Post with id #1 records reset the comments_count
# # and updates the +updated_at+ and/or +updated_on+ attributes.
# Post.reset_counters(1, :comments, touch: true)
def reset_counters(id, *counters, touch: nil)
object = find(id)
counters.each do |counter_association|
has_many_association = _reflect_on_association(counter_association)
unless has_many_association
@@ -37,9 +45,14 @@ def reset_counters(id, *counters)
reflection = child_class._reflections.values.find { |e| e.belongs_to? && e.foreign_key.to_s == foreign_key && e.options[:counter_cache].present? }
counter_name = reflection.counter_cache_column
unscoped.where(primary_key => object.id).update_all(
counter_name => object.send(counter_association).count(:all)
)
updates = { counter_name.to_sym => object.send(counter_association).count(:all) }
touch_time = object.send(:current_time_from_proper_timezone)
resolve_timestamp_columns(object, touch).each do |column|
updates[column] = touch_time
end
unscoped.where(primary_key => object.id).update_all(updates)
end
return true
end
@@ -55,6 +68,9 @@ def reset_counters(id, *counters)
# * +id+ - The id of the object you wish to update a counter on or an array of ids.
# * +counters+ - A Hash containing the names of the fields
# to update as keys and the amount to update the field by as values.
# * <tt>:touch</tt> option - Touch timestamp columns when updating.
# Pass +true+ to touch +updated_at+ and/or +updated_on+. Pass a symbol to
# touch that column or an array of symbols to touch just those ones.
#
# ==== Examples
#
@@ -73,13 +89,34 @@ def reset_counters(id, *counters)
# # UPDATE posts
# # SET comment_count = COALESCE(comment_count, 0) + 1
# # WHERE id IN (10, 15)
#
# # For the Posts with id of 10 and 15, increment the comment_count by 1
# # and update the updated_at value for each counter.
# Post.update_counters [10, 15], comment_count: 1, touch: true
# # Executes the following SQL:
# # UPDATE posts
# # SET comment_count = COALESCE(comment_count, 0) + 1,
# # `updated_at` = '2016-10-13T09:59:23-05:00'
# # WHERE id IN (10, 15)
def update_counters(id, counters)
touch = counters.delete(:touch)
updates = counters.map do |counter_name, value|
operator = value < 0 ? "-" : "+"
quoted_column = connection.quote_column_name(counter_name)
"#{quoted_column} = COALESCE(#{quoted_column}, 0) #{operator} #{value.abs}"
end
if touch
object = find(id)
touch_time = object.send(:current_time_from_proper_timezone)
timestamps = resolve_timestamp_columns(object, touch)
timestamps.map do |column|
updates << "#{connection.quote_column_name(column.to_s)} = #{connection.quote(touch_time)}"
end
end
unscoped.where(primary_key => id).update_all updates.join(", ")
end
@@ -94,13 +131,20 @@ def update_counters(id, counters)
#
# * +counter_name+ - The name of the field that should be incremented.
# * +id+ - The id of the object that should be incremented or an array of ids.
# * <tt>:touch</tt> - Touch timestamp columns when updating.
# Pass +true+ to touch +updated_at+ and/or +updated_on+. Pass a symbol to
# touch that column or an array of symbols to touch just those ones.
#
# ==== Examples
#
# # Increment the posts_count column for the record with an id of 5
# DiscussionBoard.increment_counter(:posts_count, 5)
def increment_counter(counter_name, id)
update_counters(id, counter_name => 1)
#
# # Increment the posts_count column for the record with an id of 5
# # and update the updated_at value.
# DiscussionBoard.increment_counter(:posts_count, 5, touch: true)
def increment_counter(counter_name, id, touch: nil)
update_counters(id, { counter_name => 1 }.merge(touch: touch))
end
# Decrement a numeric field by one, via a direct SQL update.
@@ -112,14 +156,30 @@ def increment_counter(counter_name, id)
#
# * +counter_name+ - The name of the field that should be decremented.
# * +id+ - The id of the object that should be decremented or an array of ids.
# * <tt>:touch</tt> - Touch timestamp columns when updating.
# Pass +true+ to touch +updated_at+ and/or +updated_on+. Pass a symbol to
# touch that column or an array of symbols to touch just those ones.
#
# ==== Examples
#
# # Decrement the posts_count column for the record with an id of 5
# DiscussionBoard.decrement_counter(:posts_count, 5)
def decrement_counter(counter_name, id)
update_counters(id, counter_name => -1)
#
# # Decrement the posts_count column for the record with an id of 5
# # and update the updated_at value.
# DiscussionBoard.decrement_counter(:posts_count, 5, touch: true)
def decrement_counter(counter_name, id, touch: nil)
update_counters(id, { counter_name => -1 }.merge(touch: touch))
end
private
def resolve_timestamp_columns(object, touch)
if touch == true
object.send(:timestamp_attributes_for_update_in_model)
else
Array(touch)
end
end
end
private
@@ -211,4 +211,145 @@ class ::SpecialReply < ::Reply
aircraft.wheels.first.destroy
end
end
test "does not update counters with touch: false" do
previous_updated_at = @topic.updated_at
Topic.update_counters(@topic.id, replies_count: -1, touch: false)
assert_equal previous_updated_at, @topic.reload.updated_at
end
test "update counters with touch: true" do
previous_updated_at = @topic.updated_at
Topic.update_counters(@topic.id, replies_count: -1, touch: true)
assert_not_equal previous_updated_at, @topic.reload.updated_at
end
test "update multiple counters with touch: true" do
previous_updated_at = @topic.updated_at
Topic.update_counters(@topic.id, replies_count: 2, unique_replies_count: 2, touch: true)
assert_not_equal previous_updated_at, @topic.reload.updated_at
end
test "reset counters with touch: true" do
previous_updated_at = @topic.updated_at
Topic.reset_counters(@topic.id, :replies, touch: true)
assert_not_equal previous_updated_at, @topic.reload.updated_at
end
test "reset multiple counters with touch: true" do
previous_updated_at = @topic.updated_at
Topic.update_counters(@topic.id, replies_count: 1, unique_replies_count: 1)
Topic.reset_counters(@topic.id, :replies, :unique_replies, touch: true)
assert_not_equal previous_updated_at, @topic.reload.updated_at
end
test "increment counters with touch: true" do
previous_updated_at = @topic.updated_at
Topic.increment_counter(:replies_count, @topic.id, touch: true)
assert_not_equal previous_updated_at, @topic.reload.updated_at
end
test "decrement counters with touch: true" do
previous_updated_at = @topic.updated_at
Topic.decrement_counter(:replies_count, @topic.id, touch: true)
assert_not_equal previous_updated_at, @topic.reload.updated_at
end
test "update counters with touch: :written_on" do
previous_written_on = @topic.written_on
Topic.update_counters(@topic.id, replies_count: -1, touch: :written_on)
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "update multiple counters with touch: :written_on" do
previous_written_on = @topic.written_on
Topic.update_counters(@topic.id, replies_count: 2, unique_replies_count: 2, touch: :written_on)
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "reset counters with touch: :written_on" do
previous_written_on = @topic.written_on
Topic.reset_counters(@topic.id, :replies, touch: :written_on)
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "reset multiple counters with touch: :written_on" do
previous_written_on = @topic.written_on
Topic.update_counters(@topic.id, replies_count: 1, unique_replies_count: 1)
Topic.reset_counters(@topic.id, :replies, :unique_replies, touch: :written_on)
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "increment counters with touch: :written_on" do
previous_written_on = @topic.written_on
Topic.increment_counter(:replies_count, @topic.id, touch: :written_on)
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "decrement counters with touch: :written_on" do
previous_written_on = @topic.written_on
Topic.decrement_counter(:replies_count, @topic.id, touch: :written_on)
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "update counters with touch: %i( updated_at written_on )" do
previous_updated_at = @topic.updated_at
previous_written_on = @topic.written_on
Topic.update_counters(@topic.id, replies_count: -1, touch: %i( updated_at written_on ))
assert_not_equal previous_updated_at, @topic.reload.updated_at
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "update multiple counters with touch: %i( updated_at written_on )" do
previous_updated_at = @topic.updated_at
previous_written_on = @topic.written_on
Topic.update_counters(@topic.id, replies_count: 2, unique_replies_count: 2, touch: %i( updated_at written_on ))
assert_not_equal previous_updated_at, @topic.reload.updated_at
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "reset counters with touch: %i( updated_at written_on )" do
previous_updated_at = @topic.updated_at
previous_written_on = @topic.written_on
Topic.reset_counters(@topic.id, :replies, touch: %i( updated_at written_on ))
assert_not_equal previous_updated_at, @topic.reload.updated_at
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "reset multiple counters with touch: %i( updated_at written_on )" do
previous_updated_at = @topic.updated_at
previous_written_on = @topic.written_on
Topic.update_counters(@topic.id, replies_count: 1, unique_replies_count: 1)
Topic.reset_counters(@topic.id, :replies, :unique_replies, touch: %i( updated_at written_on ))
assert_not_equal previous_updated_at, @topic.reload.updated_at
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "increment counters with touch: %i( updated_at written_on )" do
previous_updated_at = @topic.updated_at
previous_written_on = @topic.written_on
Topic.increment_counter(:replies_count, @topic.id, touch: %i( updated_at written_on ))
assert_not_equal previous_updated_at, @topic.reload.updated_at
assert_not_equal previous_written_on, @topic.reload.written_on
end
test "decrement counters with touch: %i( updated_at written_on )" do
previous_updated_at = @topic.updated_at
previous_written_on = @topic.written_on
Topic.decrement_counter(:replies_count, @topic.id, touch: %i( updated_at written_on ))
assert_not_equal previous_updated_at, @topic.reload.updated_at
assert_not_equal previous_written_on, @topic.reload.written_on
end
end

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