title: ember data inject meta data on save
body: <p>I'm developing a Ember.js app and at the moment I try to implement user registration. Until now I found two ways to get this working, but both have some disadvantages.</p>
  
  <p>One way is to have a registration controller, which does a custom ajax post with email, password and password confirmation values to the server. I don't really like this custom ajax call at this place, I would prefer to use a EmberData user model and save it, but I didn't want to store the password and password confirmation values on client side.</p>
  
  <p>I found out, that there is a way to receive meta-data for models from the server, so my question is, is there also a way to save meta-data to the server?</p>
  
  <p>Other solution without storing the passwords on client-side are also welcome. </p>