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-rw-r--r--activerecord/lib/active_record/associations/has_many_through_association.rb21
1 files changed, 2 insertions, 19 deletions
diff --git a/activerecord/lib/active_record/associations/has_many_through_association.rb b/activerecord/lib/active_record/associations/has_many_through_association.rb
index 6329fdfe95..7a050ca224 100644
--- a/activerecord/lib/active_record/associations/has_many_through_association.rb
+++ b/activerecord/lib/active_record/associations/has_many_through_association.rb
@@ -13,21 +13,6 @@ module ActiveRecord
@through_association = nil
end
- # Returns the size of the collection by executing a SELECT COUNT(*) query
- # if the collection hasn't been loaded, and by calling collection.size if
- # it has. If the collection will likely have a size greater than zero,
- # and if fetching the collection will be needed afterwards, one less
- # SELECT query will be generated by using #length instead.
- def size
- if has_cached_counter?
- owner._read_attribute cached_counter_attribute_name(reflection)
- elsif loaded?
- target.size
- else
- super
- end
- end
-
def concat(*records)
unless owner.new_record?
records.flatten.each do |record|
@@ -161,13 +146,11 @@ module ActiveRecord
if scope.klass.primary_key
count = scope.destroy_all.length
else
- scope.each do |record|
- record._run_destroy_callbacks
- end
+ scope.each(&:_run_destroy_callbacks)
arel = scope.arel
- stmt = Arel::DeleteManager.new arel.engine
+ stmt = Arel::DeleteManager.new
stmt.from scope.klass.arel_table
stmt.wheres = arel.constraints