Backbone.js - Remove all sub views

Question

I have a top level PageView that will re-render itself whenever the route changes. I have many nested sub-views embedded into this PageView. If I was to re-render PageView, do

Answer 1

A simple and modular class you might find useful.

ContainerView = Backbone.View.extend({
  initialize: function() {
    this.children = [];
  },
  remove: function() {
    Backbone.View.prototype.remove.apply(this, arguments);
    this.removeAllChildren();
  },
  removeAllChildren: function() {
    _.each(this.children, function(view) { view.remove(); });
    this.children = [];
  },
  appendAllChildren: function() {
    _.each(this.children, function(view) { this.$el.append(view.render().$el); }, this);
  }
});

usage:

MyView = ContainerView.extend({
  render: function() {
    this.removeAllChildren();
    this.$el.empty();

    // For each child view...
    // this.children.push(new SomeControl(...));

    this.appendAllChildren();
    return this;
  }
});