Allowing to_xml :camelize option to be set to :lower to enable lower-camelcase...

Allowing to_xml :camelize option to be set to :lower to enable lower-camelcase tags [#5903 state:resolved]

activemodel/test/cases/serializeration/xml_serialization_test.rb

@@ -70,6 +70,13 @@ def setup
     assert_match %r{<CreatedAt},     @xml
   end
 
+  test "should allow lower-camelized tags" do
+    @xml = @contact.to_xml :root => 'xml_contact', :camelize => :lower
+    assert_match %r{^<xmlContact>},  @xml
+    assert_match %r{</xmlContact>$}, @xml
+    assert_match %r{<createdAt},     @xml
+  end
+
   test "should allow skipped types" do
     @xml = @contact.to_xml :skip_types => true
     assert_match %r{<age>25</age>}, @xml

activesupport/lib/active_support/xml_mini.rb

@@ -128,7 +128,13 @@ def to_tag(key, value, options)
     def rename_key(key, options = {})
       camelize  = options.has_key?(:camelize) && options[:camelize]
       dasherize = !options.has_key?(:dasherize) || options[:dasherize]
-      key = key.camelize  if camelize
+      if camelize
+        if options[:camelize] == :lower
+          key = key.camelize(:lower)
+        else
+          key = key.camelize
+        end
+      end
       key = _dasherize(key) if dasherize
       key
     end

activesupport/test/core_ext/hash_ext_test.rb

@@ -486,7 +486,7 @@ def test_to_param_hash
   def test_to_param_hash_escapes_its_keys_and_values
     assert_equal 'param+1=A+string+with+%2F+characters+%26+that+should+be+%3F+escaped', { 'param 1' => 'A string with / characters & that should be ? escaped' }.to_param
   end
-  
+
   def test_to_param_orders_by_key_in_ascending_order
     assert_equal 'a=2&b=1&c=0', ActiveSupport::OrderedHash[*%w(b 1 c 0 a 2)].to_param
   end
@@ -525,6 +525,13 @@ def test_one_level_camelize_true
     assert xml.include?(%(<Name>David</Name>))
   end
 
+  def test_one_level_camelize_lower
+    xml = { :name => "David", :street_name => "Paulina" }.to_xml(@xml_options.merge(:camelize => :lower))
+    assert_equal "<person>", xml.first(8)
+    assert xml.include?(%(<streetName>Paulina</streetName>))
+    assert xml.include?(%(<name>David</name>))
+  end
+
   def test_one_level_with_types
     xml = { :name => "David", :street => "Paulina", :age => 26, :age_in_millis => 820497600000, :moved_on => Date.new(2005, 11, 15), :resident => :yes }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)

activesupport/test/test_xml_mini.rb

@@ -18,8 +18,8 @@ def test_rename_key_camelizes_with_camelize_true
     assert_equal "MyKey", ActiveSupport::XmlMini.rename_key("my_key", :camelize => true)
   end
 
-  def test_rename_key_camelizes_with_camelize_true
-    assert_equal "MyKey", ActiveSupport::XmlMini.rename_key("my_key", :camelize => true)
+  def test_rename_key_lower_camelizes_with_camelize_lower
+    assert_equal "myKey", ActiveSupport::XmlMini.rename_key("my_key", :camelize => :lower)
   end
 
   def test_rename_key_does_not_dasherize_leading_underscores