javascript - Saving model to new Collection then destroying it using Backbone -

wondering if can tell me if approach correct. have 2 collections - movies , watchlist both use movie model. can save movie watchlist when model watchlist: true. i'm not sure i'm doing right , love feedback.

js

onwatchlistadd: function(model) {          model.togglewatchlist();          this.datastore.watchlist.add(model);          model.save(null, {             success: function(model, response, options) {                 console.log('success::', model, response, options);             },             error: function(model, response, options) {                 console.log('error::', model, response, options);             }         });     }, onwatchlistremove: function(model) {          model.togglewatchlist();          this.datastore.watchlist.remove(model);          var clonedfilm = model.clone();          clonedfilm.destroy(null, {             success: function(model, response, options) {                 console.log('success::', model, response, options);             },             error: function(model, response, options) {                 console.log('error::', model, response, options);             }         });     } 

so logic is, on adding watchlist set models watchlist attribute true add watchlist save model. on remove set watchlist attribute false, remove watchlist collection clone , destroy not remove model. seem right?

codepen: http://codepen.io/styler/pen/obbdoe