关于vue.js：从子组件更改事件中v-data-table行的背景

Change background of v-data-table row on event from child component

我在父组件中有一个扩展数据表，在带有按钮的扩展行中有一个子组件。当我单击子组件内的按钮时，我想更改关联行的背景颜色。我不确定如何将行定为事件添加css类。

ScanGrid(父级)：

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<template>
<v-flex v-if="items.length === 0">
<ScanAdd @selectBatch="showScan" />
</v-flex>
<v-card v-else class="ma-5">
<v-card-text>
<v-layout align-center>
<v-data-table
:headers="headers"
:items="items"
item-key="StorageName"
show-expand
single-expand
:expanded="expanded"
hide-default-footer
@click:row="clickedRow"
>
<template
@isDeleted="deleteRow"
v-if="groupBy === 'barCode'"
v-slot:expanded-item="{ item }"
>
<td :colspan="12">
<ScanGridCode :item="item" />
</td>
</template>
<template v-else v-slot:expanded-item="{ item }">
<td :colspan="12">
<ScanGridDef :item="item" />
</td>
</template>
</v-data-table>
</v-layout>
</v-card-text>
</v-card>
</template>

import { API } from"@/api";
import ScanAdd from"./ScanAdd";
import ScanGridCode from"./ScanGridCode";
import ScanGridDef from"./ScanGridDef";
export default {
name:"ScanGrid",
props: {
items: {
type: Array,
required: true
}
},
components: {
ScanGridCode,
ScanGridDef,
ScanAdd
},
methods: {
deleteRow(value) {
this.isDeleted = value;
},
showScan(value) {
this.selectedId = value;
this.addScanBatch(value);
this.$emit("processingBatch", true);
this.processingBatch = true;
},
async addScanBatch(Id) {
const selectedItems = await API.getPhysicalInventoryBatch(Id);
if (selectedItems.data.Id === this.selectedId) {
this.items = selectedItems.data.Locations;
}
},
clickedRow(value) {
if (
this.expanded.length &&
this.expanded[0].StorageName == value.StorageName
) {
this.expanded = [];
} else {
this.expanded = [];
this.expanded.push(value);
}
}
},
data: () => ({
isDeleted: false,
groupBy:"barCode",
expanded: [],
items: [],
toDelete:"",
totalResults: 0,
loading: true,
headers: [
{
text:"Localisation",
sortable: true,
value:"StorageName",
class:"large-column font-weight"
},
{
text:"Paquets scann??s",
sortable: true,
value:"ScannedProduct",
class:"large-column font-weight"
},
{
text:"Paquets entrants",
sortable: true,
value:"Incoming",
class:"large-column font-weight"
},
{
text:"Paquets sortants",
sortable: true,
value:"Outgoing",
class:"large-column font-weight"
},
{
text:"Paquets inconnus",
sortable: true,
value:"Unknown",
class:"large-column font-weight"
}
]
})
};

ScanGridCode(子级)：

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<template>

<v-flex class="justify-center">
<v-btn class="ma-5" large color="lowerCase" tile @click="deleteLocation"
>Annuler le d??p?′t de cette localisation</v-btn
>
</v-flex>

</template>

export default {
name:"ScanGridCode",
props: {
item: {
type: Object,
required: true
}
},
methods: {
deleteLocation() {
this.item.IsDeleted = true;
this.$emit("IsDeleted", true);
}
},
data: () => ({
IsDeleted: false,
groupBy: 0,
headersGroupCode: [
{
text:"Code barre",
sortable: true,
value:"SerialNumber",
class:"large-column font-weight-light"
},
{
text:"De",
sortable: true,
value:"FromLocation",
class:"large-column font-weight-light"
},
{
text:"Vers",
sortable: true,
value:"ToLocation",
class:"large-column font-weight-light"
}
]
})
};

我使用Vuetify 2.1.7和Vue 2.6.10。当我单击按钮时，我调用deleteLocation函数。我假设我需要给父母$ emit一个值，但是在那之后我不知道如何以tr为目标来更改其样式。