Pastable version of Moving collections with eval and join tables

<pre class='prettyprint' language='ruby'>def move_old_collection_to_new_collection
  
  @old_collection = CollectionOne.find(params[:collectionone_id])
  @new_collection = CollectionTwo.find(params[:collectiontwo_id])

record_types_of_join_tables = ['organization', 'event', 'program', 'person', 'project']
  
  #ex. moving CollectionOneEvent join records to CollectionTwoEvent and so on
  
  for rt in record_types_of_join_tables
    collection_record_type = eval &quot;CollectionOne#{rt.capitalize}.find(:all, :conditions =&gt; ['collection_id = ?', #{@old_collection.id}])&quot;
    unless collection_record_type.empty?
      for c in collection_record_type
        record_id = eval &quot;c.&quot; + &quot;#{rt}&quot; + &quot;_id&quot;
        collection2_record_type = eval &quot;CollectionTwo#{rt.capitalize}.find(:all, :conditions =&gt; ['collection_id = ? AND #{rt}_id = ?', #{@new_collection.id}, #{record_id}])&quot;
        if collection2_record_type.empty?
          move_collection_record_to_new_collection = eval &quot;CollectionTwo#{rt.capitalize}.new(:collection_id =&gt; #{@new_collection.id}, &quot; + &quot;:&quot; + &quot;#{rt}_id =&gt; #{record_id})&quot;
          if move_collection_record_to_new_collection.save!
            puts &quot;Logging results here&quot;
          end
        end
      end
    end
  end
  
end</pre>
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Pastable version of Moving collections with eval and join tables