我正在处理 VueJs 模板,我有一个 Vuetify 数据表,我已经创建了一个表头的选择列表。
在选择列表的基础上,我想显示和隐藏表格的列,如果未选中任何标题,那么它将从表格中隐藏,就像选中时一样,然后将出现在表格中。
选择列表:
<v-select
v-model="value"
:items="headers"
label="Select Item"
multiple
>
<template v-slot:selection="{ item, index }">
<v-chip v-if="index === 0">
<span>{{ item.text }}</span>
</v-chip>
<span
v-if="index === 1"
class="grey--text caption"
>(+{{ value.length - 1 }} others)</span>
</template>
</v-select>
请您参考如下方法:
是的,可以只显示下拉列表中选定的标题
在这里工作代码笔:https://codepen.io/chansv/pen/PooKMNb
<div id="app">
<v-app id="inspire">
<v-select
v-model="value"
:items="headers"
label="Select Item"
multiple
return-object
>
<template v-slot:selection="{ item, index }">
<v-chip v-if="index === 0">
<span>{{ item.text }}</span>
</v-chip>
<span
v-if="index === 1"
class="grey--text caption"
>(+{{ value.length - 1 }} others)</span>
</template>
</v-select>
<v-data-table
:headers="selectedHeaders"
:items="desserts"
class="elevation-1"
>
<template v-slot:item.calories="{ item }">
<v-chip :color="getColor(item.calories)" dark>
{{desserts.map(function(x) {return x.id; }).indexOf(item.id)}}
</v-chip>
</template>
</v-data-table>
</v-app>
</div>
new Vue({
el: '#app',
vuetify: new Vuetify(),
data () {
return {
value: [],
selectedHeaders: [],
headers: [
{
text: 'Dessert (100g serving)',
align: 'left',
sortable: false,
value: 'name',
},
{ text: 'Calories', value: 'calories' },
{ text: 'Fat (g)', value: 'fat' },
{ text: 'Carbs (g)', value: 'carbs' },
{ text: 'Protein (g)', value: 'protein' },
{ text: 'Iron (%)', value: 'iron' },
],
desserts: [
{
id: 3,
name: 'Frozen Yogurt',
calories: [237,456,789,789],
fat: 6.0,
carbs: 24,
protein: 4.0,
iron: '1%',
},
{
id: 83,
name: 'Ice cream sandwich',
calories: [237,456,789,789],
fat: 9.0,
carbs: 37,
protein: 4.3,
iron: '1%',
},
{
id: 11,
name: 'Eclair',
calories: 262,
fat: 16.0,
carbs: 23,
protein: 6.0,
iron: '7%',
},
{
id: 545,
name: 'Cupcake',
calories: 305,
fat: 3.7,
carbs: 67,
protein: 4.3,
iron: '8%',
},
{
id: 909,
name: 'Gingerbread',
calories: 356,
fat: 16.0,
carbs: 49,
protein: 3.9,
iron: '16%',
},
],
}
},
methods: {
getColor (calories) {
if (calories > 400) return 'red'
else if (calories > 200) return 'orange'
else return 'green'
},
},
watch: {
value(val) {
this.selectedHeaders = val;
}
},
created() {
this.selectedHeaders = this.headers;
}
})