Toggle detailed row in buefy table - vuejs2

Question

I have a buefy table with details. Whenever I click on a chevron, the detailed view of the according row shows. It would be much better in my case, to have only one detailed view open. The desired outcome is: Whenever I click on a chevron, that detailed view opens and all other close.
In buefy, the opening of the detailed view is programmed like this:
<td v-if="detailed">
<a role="button" #click.stop="toggleDetails(row)">
<b-icon
icon="chevron-right"
both
:class="{'is-expanded': isVisibleDetailRow(row)}"/>
</a>
</td>
...
props: {
...
detailed: Boolean
...
}
...
methods: {
...
toggleDetails(obj) {
const found = this.isVisibleDetailRow(obj)
if (found) {
this.closeDetailRow(obj)
this.$emit('details-close', obj)
} else {
this.openDetailRow(obj)
this.$emit('details-open', obj)
}
// Syncs the detailed rows with the parent component
this.$emit('update:openedDetailed', this.visibleDetailRows)
},
openDetailRow(obj) {
const index = this.handleDetailKey(obj)
this.visibleDetailRows.push(index)
},
closeDetailRow(obj) {
const index = this.handleDetailKey(obj)
const i = this.visibleDetailRows.indexOf(index)
this.visibleDetailRows.splice(i, 1)
},
isVisibleDetailRow(obj) {
const index = this.handleDetailKey(obj)
const result = this.visibleDetailRows.indexOf(index) >= 0
return result
},
...
}
I see that there is an update_event sent to the parent. Do I have to save the
visibleDetailRows and tell the Child component to close it, when the button is pressed again? How would I do that?

Answer 1

The way I did it was to use the #details-open event to call a custom function :
<b-table
:data="data"
:opened-detailed="defaultOpenedDetails"
detailed
detail-key="id"
#details-open="(row, index) => closeAllOtherDetails(row, index)"
>
When you expand a row, the event is triggered.
And the called function closeAllOtherDetails() deletes all elements of the defaultOpenedDetails array, except the current row you just expanded :
closeAllOtherDetails(row, index) {
this.defaultOpenedDetails = [row.id]
}
That does the trick. Simple!