title: Angularjs send value to database when leaving input field
body: <p>Been looking around but i can't seem to find any good resources.
  Got an application where i want to update the data in the database once the user leaves the textbox/area etc., figured i could probably do this with the ngfocus event but i would also need to get which field has triggered the update. </p>
  
  <p>Not sure on how to proceed, might not event be the best thing to use ngfocus. Perhaps creating a new directive or maybe extending ngfocus if possible. Any suggestions are appreciated.  </p>