How to call child View method from parent View?

Question

Here is a Child View - Marionette ItemView, and parent presented by Marionette CompositeView! I tried use Backbone.babysitter, but without results

var CheckboxView = Marionette.ItemView.extend({
  template: JST["components-checkboxItem"],
  className: "checkbox",
  ui: {
    "checkbox": "#checkbox-item"
  },

  selectAll: function () {
    //do some stuff here (this method should be called from parent)
  }
});

module.exports = Marionette.CompositeView.extend({
  className: 'multiselect',
  template: JST["components-multiselect"],
  childView: CheckboxView,
  childViewContainer: ".checkboxes",

  events: {
    "click .selectAll": "selectAll",
  },
  
  selectAll: function () {
    //I need to call appropriate child method from here!!!
  }
});

Answer 1

You should be able to invoke it like:

this.children.call("selectAll",1,2); or

this.children.apply("selectAll",[1,2]); from CompositeView.

You can find more info at backbone.babysitter which is what marionette is using to handle this