Getting class name in plugin

Hi Guys,

I am writing a plugin that has a “has_many” relationships via a
join_table.

It is polymorphic so I need to filter the class name. How can I get the
extending class’s name in the plugin in?

e.g.

has_many :contents_states, :conditions => {"content_type
=#{self.class.name}
}

Thanks!

Arthur