title: Laravel relationship among 3 elements
body: <p>The situation:</p>
  
  <ul>
  <li>a user can organize many parties</li>
  <li>a user can participate to many parties</li>
  <li>a user participating to a party has to declare what kind of stuff (food, cutlery, other) will take to that specific party</li>
  </ul>
  
  <p>I was thinking to 3 models/tables, like: users, parties, equipment (maybe a better name, but I haven't yet decided), and in addition another table to put into relationship those 3 elements with 3 columns, one for each element's id, 
  so that I can retrieve the informations needed, in example, given a party, know what each participant will take with him.</p>
  
  <p>How do I represent this using Eloquent?
  I was thinking to polymorphic relationships, but I couldn't come to a solution.</p>
  
  <p>Am I thinking wrong to have what I need?</p>