method

append_one

Importance_0
Ruby on Rails latest stable (v7.1.3.2) - 0 notes - Class: CallbackChain
append_one(callback) private

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# File activesupport/lib/active_support/callbacks.rb, line 683
          def append_one(callback)
            @all_callbacks = nil
            @single_callbacks.clear
            remove_duplicates(callback)
            @chain.push(callback)
          end
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