title: How to use Self Join to separate data with no relationships in RAILS 4
body: <p>I am building a prototype for a inventory system for a clothing store. This app manages item markdowns, original price,Markdown price, colour, availability.</p>
  
  <p>the app imports an excel file and maps the columns and the rows of the excel to a model. </p>
  
  <p>there are 6 columns in total, both male and female clothes have the same attributes. But I'd like to separate the item by gender. </p>
  
  <p>I can upload all female data, then upload all male data, but I am not sure how to handle it on the import end. Since they both have the same attributes, I feel like it is a waste to simply make 2 separate models for this. </p>
  
  <p>I looked into self joins, but these items have absolutely no relationship with each other. </p>
  
  <p>How would I handle this?</p>