title: How to implement a mutli-foreign key in laravel 8
body: <p>I am working on a project where am required to implement a database relationship between tables(Trip, Truck, Fuel) . Below is the idea :</p>
  <ul>
  <li>A truck has many trips</li>
  <li>Each trip has many trucks</li>
  <li>Each truck has got a fuel associated with a trip.</li>
  </ul>
  <p>Now I was hoping to use Eloquent relationships to solve this but am stuck . How do I get a Fuel transaction and map it to a truck and trip ?</p>
  <p>Thanks in advance !</p>