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-rw-r--r--lib/arel/algebra/attributes/attribute.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/arel/algebra/attributes/attribute.rb b/lib/arel/algebra/attributes/attribute.rb
index 8a7993f284..0ad9382a52 100644
--- a/lib/arel/algebra/attributes/attribute.rb
+++ b/lib/arel/algebra/attributes/attribute.rb
@@ -27,6 +27,10 @@ module Arel
false
end
+ def eval(row)
+ row[self]
+ end
+
module Transformations
def self.included(klass)
klass.send :alias_method, :eql?, :==