Assign Several Subviews to selectors within current view

backbone.assign.js

Backbone.View.prototype.assign = function(set, preventEmpty) {
        /*
        accepts an object of selectors:arrays of views

        maps each of the views to the selector
        */
        var self = this;
        //store all subviews
        self.assignments = _.extend(self.assignments||{},set);

        //
        _.each(set, function(views, selector) {
                if(!views) return;
                if(!preventEmpty) {
                    var el = self.$(selector).empty();
                } else {
                    var el = self.$(selector);
                }
                
                if(views instanceof Array != true) {
                    views = [views];
                }
                _.each(views, function(view) {
                    view.setElement(el).render();  
                });
            }, this);

    };