Harness PGSearch and return back a specific output grouped by core topics to fulfill my searching needs!

core_topic.rb

  class << self
    # This will loop through each topic and create an array of objects that are 
    # found within a specific topic.
    #
    # Example:  CoreTopic.find_by_topic(pg_search_results_array)
    # Output: [
    #   { topic: "teamwork", results: [ob1, obj2, obj3] }  
    #   { topic: "respect", results: [ob1, obj2, obj3] }  
    # ]
    def find_by_topics(results)
      results_hash, used = [], []
 
      CoreTopic.all.each do |topic|
        found_in_topic = []
 
        results.flatten.each do |result|
          result = result.class == PgSearch::Document ? result.searchable : result
          break unless result.present?
 
          found_in_topic << result if result.core_topics.include?(topic)
          if found_in_topic.include?(result) && !used.include?(result)
            results_hash << { topic: topic.title, results: found_in_topic.uniq }
          end
 
          used << result if result.core_topics.include?(topic)
        end
      end
 
      results_hash
    end
  end