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Update counter cache in memory if parent target is existed

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Fixes #19550.
This commit is contained in:
Ryuta Kamizono 2018-09-26 22:47:49 +09:00
parent 29c23cc7bd
commit 38fae1f250
2 changed files with 35 additions and 10 deletions
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13
activerecord/lib/active_record/associations/builder/belongs_to.rb
View file

@ -31,24 +31,17 @@ module ActiveRecord::Associations::Builder # :nodoc:
mixin.class_eval do
def belongs_to_counter_cache_after_update(reflection)
foreign_key = reflection.foreign_key
cache_column = reflection.counter_cache_column
if association(reflection.name).target_changed?
if reflection.polymorphic?
model = attribute_in_database(reflection.foreign_type).try(:constantize)
model_was = attribute_before_last_save(reflection.foreign_type).try(:constantize)
else
model = reflection.klass
model_was = reflection.klass
end
foreign_key_was = attribute_before_last_save foreign_key
foreign_key = attribute_in_database foreign_key
foreign_key_was = attribute_before_last_save(reflection.foreign_key)
cache_column = reflection.counter_cache_column
if foreign_key && model < ActiveRecord::Base
counter_cache_target(reflection, model, foreign_key).update_counters(cache_column => 1)
end
association(reflection.name).increment_counters
if foreign_key_was && model_was < ActiveRecord::Base
counter_cache_target(reflection, model_was, foreign_key_was).update_counters(cache_column => -1)

32
activerecord/test/cases/associations/has_many_associations_test.rb
View file

@ -1197,6 +1197,38 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
assert_equal 2, topic.reload.replies.size
end
def test_counter_cache_updates_in_memory_after_update_with_inverse_of_disabled
topic = Topic.create!(title: "Zoom-zoom-zoom")
assert_equal 0, topic.replies_count
reply1 = Reply.create!(title: "re: zoom", content: "speedy quick!")
reply2 = Reply.create!(title: "re: zoom 2", content: "OMG lol!")
assert_queries(6) do
topic.replies << [reply1, reply2]
end
assert_equal 2, topic.replies_count
assert_equal 2, topic.reload.replies_count
end
def test_counter_cache_updates_in_memory_after_update_with_inverse_of_enabled
category = Category.create!(name: "Counter Cache")
assert_nil category.categorizations_count
categorization1 = Categorization.create!
categorization2 = Categorization.create!
assert_queries(4) do
category.categorizations << [categorization1, categorization2]
end
assert_equal 2, category.categorizations_count
assert_equal 2, category.reload.categorizations_count
end
def test_pushing_association_updates_counter_cache
topic = Topic.order("id ASC").first
reply = Reply.create!