How do you find the origin of an event from a radiogroup?

[MartJohannsen]

In Vue, I am trying to see the source of my event. We are using Bootstrap-vue, and so far we have managed to see if an event comes from an input field with event.target.vue.$parent.$options._componentTag.

However, this is not possible with a (or b-form-radio) as its events has no _componentTag.

So my question is, how do you see the button which fired/origin of an event?

Ultimately, we want to do an action on all @change events, and the filter depending on the origin of the event.