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@@ -1,3 +1,8 @@
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+*2.2.1 [RC2 or 2.2 final]*
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+
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+* Fixed that ActiveResource#post would post an empty string when it shouldn't be posting anything #525 [Paolo Angelini]
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+
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+
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 *2.2.0 [RC1] (October 24th, 2008)*
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 * Add ActiveResource::Base#to_xml and ActiveResource::Base#to_json. #1011 [Rasik Pandey, Cody Fauser]

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@@ -90,7 +90,7 @@ module ActiveResource
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       end
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       def post(method_name, options = {}, body = nil)
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-        request_body = body.nil? ? encode : body
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+        request_body = body.blank? ? encode : body
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         if new?
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           connection.post(custom_method_new_element_url(method_name, options), request_body, self.class.headers)
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         else

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@@ -81,6 +81,8 @@ class CustomMethodsTest < Test::Unit::TestCase
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     # Test POST against a new element URL
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     ryan = Person.new(:name => 'Ryan')
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     assert_equal ActiveResource::Response.new(@ryan, 201, {'Location' => '/people/5.xml'}), ryan.post(:register)
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+    expected_request = ActiveResource::Request.new(:post, '/people/new/register.xml', @ryan)
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+    assert_equal expected_request.body, ActiveResource::HttpMock.requests.first.body
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     # Test POST against a nested collection URL
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     addy = StreetAddress.new(:street => '123 Test Dr.', :person_id => 1)