application_helper.rb

require 'open3'

module ApplicationHelper
  
  def link_to_presenter(item, options = {})
    label = options[:label]
    url = content_link(item,options)
    link_to label, url
  end
  
  def content_link(item,options)
    ...
    
  end
  
end

result.rb

class Result < RescursiveOpenStruct
  include ApplicationHelper
  include EventHelper
  
  def self.clean_up(reports, columns)
    cleaned_reports = []
    reports.each do |report|
      next unless report
      map = report.field_map
      
      map.view = link_to_presenter(map, :field => :presenter_id)
      ..
      ..
      
      cleaned_reports << map
    end
    
  end

stacktrace

NoMethodError (undefined method `link_to_presenter' for Result:Class):
  app/models/result.rb:11:in `block in clean_up'
  app/models/result.rb:7:in `each'
  app/models/result.rb:7:in `clean_up'
  app/controllers/reports_controller.rb:200:in `query'