title: PHP Laravel: Update one -to- many relationship
body: <p>I have a one to many relationship in my Eloquent model and would like to know the best approach to go about updating the model, especially the <code>belongsTo</code> model part.</p>
  
  <p>I have come across other answers that suggest that I do save each <code>belongsTo</code> model singly, but that brings up a problem as I will be making <code>n</code> amount of calls to the database server instead of a single insert or a few.</p>
  
  <p>So I will like to know the best approach to ensure my query and database resourse is optimized and efficient.</p>