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My add book to cart

/ Published in: Rails
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  1.   def add
  2.     book = Book.find(params[:id]) or raise ActiveRecord::RecordNotFound
  3.     # Added by sending book object.
  4.     flash[:cart_notice] = "'#{book.title}' was added!" if  @cart.add book
  5.     redirect_to :action => 'index'
  6.   end

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