fetch vs get

[Matt J]

Hi,

   Just out of curiosity. I have two different possibilities in code:

       

  model.on('change','users.'+userId+".contacts.*.unread", function(contactId,unread) {

      var contacts = model.get('users.' + userId+".contacts");

      var unreadContacts = [];

      var total = 0;

      for(var contact in contacts){

        total+= model.get('users.' + userId+".contacts."+contact+".unread");

        unreadContacts.push(model.get("users."+userId+".messages."+contact));

      }

      model.set("_page.totalUnread", total);

      model.set("_page.unreadContacts", contacts);

    });

Or I could wrap the code in a fetch, does it matter? Does it only do one database call in the fetch scenario? Thanks.

  model.on('change','users.'+userId+".contacts.*.unread", function(contactId,unread) {

       model.fetch("users."+userId, function(err){

           .... above code

       });

    });

[Matt J]

Nvm... I am new to derbyjs, I see I need a fetch otherwise I can't get the data in the first place (there was a different fetch happening on the page that allowed the data to be there).

Out of curiosity, I want the model.change code to run once on page load and then every time on the change, is there a way to do that? Currently I havecopied the code in from of the model.change as well.

I tried putting it in a method, but then I lost the model object somehow. any ideas?