In SuiteCommerce, when a Backbone view renders, all child views of that view are completely rebuilt. New instances of the child views are created. This is usually fine, but there can be cases where re-rendering a specific child view without destroying and creating a new Backbone view object is desired. For example, if data would be lost or rendering speed is a concern.
Code Example: Render Specific Child Views from Parent View
Re-rendering a specific child view is actually quite easy once you know the function exists.
define("Parent.View", [
"parent_view.tpl",
"Backbone",
"Child.View",
], function (
parent_view_tpl,
Backbone,
ChildView,
) {
"use strict";
return Backbone.View.extend({
template: parent_view_tpl,
events: {
'click [data-action="some-listerer"]': "handleEvent",
},
//use the "renderChild" function to trigger a re-rending on an existing child view
handleEvent: function () {
this.renderChild("MyChild.View");
},
//define your child view normally.
childViews: {
"MyChild.View": function () {
return new ChildView();
},
},
});
});About This Code to Re-render the "MyChild.View"
The above code will re-render the “MyChild.View” child view when a user clicks an element with the attribute “data-action="some-listerer". Any event is possible, the important thing is the “renderChild" function, which calls render on the child view but not the parent, and not other child views. A common use case would be the re-rendering of specific columns in a table.
Author: Sam Gagliardi
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