Partial Search

Can someone please help me to adjust the folowing method into
displaying
   using a flag. Basically what I want it to do it have an array of
keywords
   and a flag which asks partial match or exact

   These are the keywords.

···

------------------------

   KEYWORDS =["Sole Trader", "Retail", "Builder", "Internet" ]

   And this is the current method.
   -------------------------

   def self.search_by_keyword(businesses, searched_keyword)
      businesses.select do |b|
        b.my_keywords.include?(searched_keyword)
     end
   end

   It has to me something like this.
   ----------------------------

      def self.search_by_keyword(businesses, searched_keyword_as_array,
flag_exact_or_partial_match)
      businesses.select do |b|
        b.my_keywords.include?(searched_keyword)
     end
   en
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