Returns a CDATA section for the given content. CDATA sections are used to escape blocks of text containing characters which would otherwise be recognized as markup. CDATA sections begin with the string <![CDATA[ and end with (and may not contain) the string ]]>.
Given the name of an ActiveRecord subclass, find an instance
Finds the AR instance from the ActionController instance. Assumes that if a $object_name is defined either as the argument or an instance variable, then there must be a controller object instance which points to a single instance of the ActiveRecord. FIXME: Handle errors better.
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Instance of the subclass, or null if object not available.