/ Ruby on Rails
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method

prepend_one

rails latest stable - Class: ActiveSupport::Callbacks::CallbackChain

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v5.0.0.1) is shown here.

prepend_one(callback)
private

No documentation available.

# File activesupport/lib/active_support/callbacks.rb, line 532
      def prepend_one(callback)
        @callbacks = nil
        remove_duplicates(callback)
        @chain.unshift(callback)
      end