Ruby on Rails

Hi!  I want to make a  search box. I tried search box by using tag_name but it didn't work.


# posts_controller.rb

     @tag =   Tag.find_all_by_tag_name(params[:search_string])

is work fine.But It only return all matched words.

 I tried below their code to be able to fuzzy search.

 But they didn't work.


  @tag = Tag.find_all_by_tag_name('%' +params[:search_string]+'%')

  @tag = Tag.find(:all,:conditions => ['tag_name LIKE ?',"%{:search_string}%"])


Please help me some advise! thanks.

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