relation .present? and .blank? should not query SELECT COUNT(DISTINCT id)

9d52b45a · Thiago Almeida · e2b67513 · 9d52b45a
隐藏空白更改
内联并排

Showing with 4 addition and 0 deletion

activerecord/lib/active_record/relation.rb activerecord/lib/active_record/relation.rb +4 -0

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--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -507,6 +507,10 @@ def with_default_scope #:nodoc:
      end
    end

+    def blank?
+      to_a.blank?
+    end
+
    private

    def references_eager_loaded_tables?