title: Multiple relation between two models
body: <p>I have two databases/models <code>User</code> and <code>Listing</code>.</p>
  
  <p>I am trying to create two relations:</p>
  
  <ul>
  <li>One <code>User</code> to <em>one</em> <code>Listing</code> called "ListingOwner"</li>
  <li>One <code>User</code> to <strong>many</strong> <code>Listing</code> called "ListingCreator"</li>
  </ul>
  
  <p>My users can create multiple listings. I want to keep that as "Creator". But any user is allowed to come in and "claim" a listing, making them the "Owner". However in graph.cool I can't create more then one relationshp between <code>User</code> and <code>Listing</code> model, it gives me this error:</p>
  
  <p><a href="https://i.imgur.com/8xxEfJM.png" rel="nofollow noreferrer">http://i.imgur.com/8xxEfJM.png</a></p>
  
  <blockquote>
    <p>Server request for mutation <code>AddRelationMutation</code> failed for the following reasons: 1. A field with the name 'listing' already exists AddRelationInput!) {addRelation(input:$input_0) {clientMutat ^^^</p>
  </blockquote>