16 lines
		
	
	
		
			314 B
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			16 lines
		
	
	
		
			314 B
		
	
	
	
		
			Ruby
		
	
	
	
class BufferCategory
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  include Mongoid::Document
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  include Mongoid::Timestamps
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  belongs_to :category
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  belongs_to :categorizable, polymorphic: true
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  before_destroy :remove_categorizable_category_id
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  private
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  def remove_categorizable_category_id
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    self.categorizable.remove_id(self.category.id)
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  end
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end |