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-rw-r--r--activerecord/lib/active_record/associations/collection_association.rb7
1 files changed, 5 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb
index 2dca6b612e..00355f3e89 100644
--- a/activerecord/lib/active_record/associations/collection_association.rb
+++ b/activerecord/lib/active_record/associations/collection_association.rb
@@ -246,9 +246,12 @@ module ActiveRecord
end
end
- # Count all records using SQL. Construct options and pass them with
- # scope to the target class's +count+.
+ # Returns the number of records. If no arguments are given, it counts all
+ # columns using SQL. If one argument is given, it counts only the passed
+ # column using SQL. If a block is given, it counts the number of records
+ # yielding a true value.
def count(column_name = nil)
+ return super if block_given?
relation = scope
if association_scope.distinct_value
# This is needed because 'SELECT count(DISTINCT *)..' is not valid SQL.