Merge pull request mongodb#3054 from dianaclarke/issue-3053

allow read_attribute to work with an aliased field name

lib/mongoid/attributes.rb

@@ -89,7 +89,7 @@ def has_attribute_before_type_cast?(name)
     #
     # @since 1.0.0
     def read_attribute(name)
-      normalized = name.to_s
+      normalized = database_field_name(name.to_s)
       if hash_dot_syntax?(normalized)
         attributes.__nested__(normalized)
       else

spec/mongoid/attributes_spec.rb

@@ -616,6 +616,21 @@
         end
       end
     end
+
+    context "when attribute has an aliased name" do
+
+      let(:person) do
+        Person.new
+      end
+
+      before(:each) do
+        person.write_attribute(:t, "aliased field to test")
+      end
+
+      it "returns the value of the aliased field" do
+        expect(person.read_attribute(:test)).to eq("aliased field to test")
+      end
+    end
   end
 
   describe "#read_attribute_before_type_cast" do