(This document is a work in progress.)
Show/Hide
While there is no specific event for listening to a field being show or hidden, using native Backbone you can listen for a field model change and check which attribute was changed.
For example, listening on the fields channel for the change:model event, check if the fieldModel’s visible attribute has changed.
| var myConditionalLogicController = Marionette.Object.extend({ | |
| initialize: function () { | |
| this.listenTo( Backbone.Radio.channel('fields'), 'change:model', this.fieldModelChange ); | |
| }, | |
| fieldModelChange: function( fieldModel ) { | |
| if ( fieldModel.changed.visible !== true) return; | |
| // code to be run when a conditional is field is shown | |
| } | |
| }); |