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我有一个嵌套形式的标签文本字段(它与旅行相关联),它在保存时以逗号分隔,并将单词保存在由逗号分隔的字符串中。我已经跳过了一些障碍来实现它,现在它正在按照我的意愿发生。唯一的缺点是它似乎不会使当前标签成为唯一标签(如果存在,则将现有标签与新的 Trip 关联,而不是制作新标签)

这是代码拆分和单独保存标签:

if params[:trip][:tags_attributes].present?
  params[:trip][:tags_attributes].each do |tag| 
   @a = tag[1]['title']
   @a.split(',').each do |single|
      @trip.tags.find_or_initialize_by_title(single)  
   end
  end
end

以防万一我的 Trip.rb:

class Trip < ActiveRecord::Base
  attr_accessible :description, :title, :user_id, 
  :triplocations_attributes, :photo, :category_ids, 
  :start_city, :tripphotos_attributes, :img_url, :thumb_url, :images,
  :tags_attributes, :province

  # validates :title, :length => {:minimum => 3}
  # validates :description, :presence => true
  # validates_associated :tags


  has_many :triplocations, :dependent => :destroy
  has_many :tripphotos, :dependent => :destroy

  has_and_belongs_to_many :categories
  has_and_belongs_to_many :tags


  accepts_nested_attributes_for :triplocations, allow_destroy: true
  accepts_nested_attributes_for :tripphotos, allow_destroy: true
  accepts_nested_attributes_for :categories
  accepts_nested_attributes_for :tags

end

提前致谢!

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