veos_backbone_reset.js

var r = new veos.model.Reports();  // creates the "reports" collection proxy object

r.on('reset', function(collection) {
    navigator.geolocation.getCurrentPosition(function(currentLocation) {
            var collectionFilter = function(installation) {
                return isCloseBy(installation, currentLocation);
            }
            var filteredReports = _.filter(collection, collectionFilter);

            createGrid(filteredReports);
        },
        failureHandler
    )
});

// @triggers reset on the collection
r.fetch();