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Diffstat (limited to 'railties/guides/source/active_model_basics.textile')
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diff --git a/railties/guides/source/active_model_basics.textile b/railties/guides/source/active_model_basics.textile index 92fa5bc8f4..daf41d2296 100644 --- a/railties/guides/source/active_model_basics.textile +++ b/railties/guides/source/active_model_basics.textile @@ -67,6 +67,29 @@ class Person end </ruby> +h4. Conversion + +If a class defines persisted? and id methods then you can include Conversion module in that class and you can able to call Rails conversion methods to objects of that class. + +<ruby> +class Person + include ActiveModel::Conversion + + def persisted? + false + end + + def id + nil + end +end + +person = Person.new +person.to_model == person #=> true +person.to_key #=> nil +person.to_param #=> nil +</ruby> + h3. Changelog * August 5, 2011: Initial version by "Arun Agrawal":http://github.com/arunagw
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