method

__update_callbacks

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What's this?

__update_callbacks(name) public

This is used internally to append, prepend and skip callbacks to the CallbackChain.

# File activesupport/lib/active_support/callbacks.rb, line 725
        def __update_callbacks(name) # :nodoc:
          self.descendants.prepend(self).reverse_each do |target|
            chain = target.get_callbacks name
            yield target, chain.dup
          end
        end

__update_callbacks

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