Ruby on Rails：擴展ActiveRecord :: Errors

Question

在Ruby on Rails中，從哪裏將這段代碼放入http://gist.github.com/376389？我想用可用的代碼擴展ActiveRecord :: Errors，以便合併錯誤消息。

這是爲ApplicationController？或爲lib？從github.com

# monkey patch gleaned from http://dev.rubyonrails.org/attachment/ticket/11394/merge_bang_errors.patch 
module ActiveRecord 
    class Errors 

    def merge!(errors, options={}) 
     fields_to_merge = if only=options[:only] 
     only 
     elsif except=options[:except] 
     except = [except] unless except.is_a?(Array) 
     except.map!(&:to_sym) 
     errors.entries.map(&:first).select do |field| 
      !except.include?(field.to_sym) 
     end 
     else 
     errors.entries.map(&:first) 
     end 
     fields_to_merge = [fields_to_merge] unless fields_to_merge.is_a?(Array) 
     fields_to_merge.map!(&:to_sym) 

     errors.entries.each do |field, msg| 
     add field, msg if fields_to_merge.include?(field.to_sym) 
     end 
    end 
    end 
end 

Answer 1

---

粘貼您可以直接丟棄到任何紅寶石文件在您initializers目錄（創建一個新的，將其命名爲任何你想要的）。每次啓動時，Rails都會運行其中的所有文件，並且當時將擴展Errors。

Answer 2

這個問題是過時的，但如果你想要做在軌3.X類似的東西，你可以在你的配置/初始化/目錄中的文件刪除此：

# monkey patch gleaned from http://dev.rubyonrails.org/attachment/ticket/11394/merge_bang_errors.patch 

module ActiveModel 
    class Errors 
    def merge!(errors, options={}) 
     return if errors.blank? || errors.first.size < 2 

     fields_to_merge = if only=options[:only] 
     only 
     elsif except=options[:except] 
     except = [except] unless except.is_a?(Array) 
     except.map!(&:to_sym) 
     errors.entries.map(&:first).select do |field| 
      !except.include?(field.to_sym) 
     end 
     else 
     errors.entries.map(&:first) 
     end 
     fields_to_merge = [fields_to_merge] unless fields_to_merge.is_a?(Array) 
     fields_to_merge.map!(&:to_sym) 

     errors.entries.each do |field, msg| 
     add field, msg if fields_to_merge.include?(field.to_sym) 
     end 
    end 
    end 
end