Quasar is a popular Vue UI library for developing good looking Vue apps.
In this article, we’ll take a look at how to create Vue apps with the Quasar UI library.
Expandable Table Row
We can create tables with expandable table rows.
For instance, we can write:
<!DOCTYPE html>
<html>
<head>
<link
href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons"
rel="stylesheet"
type="text/css"
/>
<link
href="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.min.css"
rel="stylesheet"
type="text/css"
/>
</head>
<body class="body--dark">
<script src="https://cdn.jsdelivr.net/npm/vue@^2.0.0/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.umd.min.js"></script>
<div id="q-app">
<q-layout
view="lHh Lpr lFf"
container
style="height: 100vh;"
class="shadow-2 rounded-borders"
>
<div class="q-pa-md">
<q-table
title="Treats"
:data="data"
:columns="columns"
row-key="name"
>
<template v-slot:header="props">
<q-tr :props="props">
<q-th auto-width></q-th>
<q-th v-for="col in props.cols" :key="col.name" :props="props">
{{ col.label }}
</q-th>
</q-tr>
</template>
<template v-slot:body="props">
<q-tr :props="props">
<q-td auto-width>
<q-btn
size="sm"
color="accent"
round
dense
@click="props.expand = !props.expand"
:icon="props.expand ? 'remove' : 'add'"
>
</q-btn>
</q-td>
<q-td v-for="col in props.cols" :key="col.name" :props="props">
{{ col.value }}
</q-td>
</q-tr>
<q-tr v-show="props.expand" :props="props">
<q-td colspan="100%">
<div class="text-left">
{{ props.row.name }}
</div>
</q-td>
</q-tr>
</template>
</q-table>
</div>
</q-layout>
</div>
<script>
const columns = [
{
name: "name",
required: true,
label: "Dessert",
align: "left",
field: (row) => row.name,
format: (val) => `${val}`,
sortable: true
},
{
name: "calories",
align: "center",
label: "Calories",
field: "calories",
sortable: true
},
{ name: "fat", label: "Fat (g)", field: "fat", sortable: true },
{
name: "calcium",
label: "Calcium (%)",
field: "calcium",
sortable: true,
sort: (a, b) => parseInt(a, 10) - parseInt(b, 10)
}
];
const data = [
{
name: "Frozen Yogurt",
calories: 159,
fat: 6.0,
calcium: "14%"
},
{
name: "Ice cream sandwich",
calories: 237,
fat: 9.0,
calcium: "8%"
},
{
name: "Eclair",
calories: 262,
fat: 16.0,
calcium: "6%"
},
{
name: "Honeycomb",
calories: 408,
fat: 3.2,
calcium: "0%"
},
{
name: "Donut",
calories: 452,
fat: 25.0,
calcium: "2%"
},
{
name: "KitKat",
calories: 518,
fat: 26.0,
calcium: "12%"
}
];
new Vue({
el: "#q-app",
data: {
columns,
data
}
});
</script>
</body>
</html>
We populate the body slot with the q-tr component to add the table row.
The first row has the data.
And the second row has more data. The 2nd row is only shown with the props.expand property is true .
We toggle the value of props.expand with the q-btn in the first row.
We can also replace the q-btn with the with a q-toggle :
<!DOCTYPE html>
<html>
<head>
<link
href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons"
rel="stylesheet"
type="text/css"
/>
<link
href="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.min.css"
rel="stylesheet"
type="text/css"
/>
</head>
<body class="body--dark">
<script src="https://cdn.jsdelivr.net/npm/vue@^2.0.0/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.umd.min.js"></script>
<div id="q-app">
<q-layout
view="lHh Lpr lFf"
container
style="height: 100vh;"
class="shadow-2 rounded-borders"
>
<div class="q-pa-md">
<q-table
title="Treats"
:data="data"
:columns="columns"
row-key="name"
>
<template v-slot:header="props">
<q-tr :props="props">
<q-th auto-width></q-th>
<q-th v-for="col in props.cols" :key="col.name" :props="props">
{{ col.label }}
</q-th>
</q-tr>
</template>
<template v-slot:body="props">
<q-tr :props="props">
<q-td auto-width>
<q-toggle
v-model="props.expand"
checked-icon="add"
unchecked-icon="remove"
>
</q-toggle>
</q-td>
<q-td v-for="col in props.cols" :key="col.name" :props="props">
{{ col.value }}
</q-td>
</q-tr>
<q-tr v-show="props.expand" :props="props">
<q-td colspan="100%">
<div class="text-left">
This is expand slot for row above: {{ props.row.name }}.
</div>
</q-td>
</q-tr>
</template>
</q-table>
</div>
</q-layout>
</div>
<script>
const columns = [
{
name: "name",
required: true,
label: "Dessert",
align: "left",
field: (row) => row.name,
format: (val) => `${val}`,
sortable: true
},
{
name: "calories",
align: "center",
label: "Calories",
field: "calories",
sortable: true
},
{ name: "fat", label: "Fat (g)", field: "fat", sortable: true },
{
name: "calcium",
label: "Calcium (%)",
field: "calcium",
sortable: true,
sort: (a, b) => parseInt(a, 10) - parseInt(b, 10)
}
];
const data = [
{
name: "Frozen Yogurt",
calories: 159,
fat: 6.0,
calcium: "14%"
},
{
name: "Ice cream sandwich",
calories: 237,
fat: 9.0,
calcium: "8%"
},
{
name: "Eclair",
calories: 262,
fat: 16.0,
calcium: "6%"
},
{
name: "Honeycomb",
calories: 408,
fat: 3.2,
calcium: "0%"
},
{
name: "Donut",
calories: 452,
fat: 25.0,
calcium: "2%"
},
{
name: "KitKat",
calories: 518,
fat: 26.0,
calcium: "12%"
}
];
new Vue({
el: "#q-app",
data: {
columns,
data
}
});
</script>
</body>
</html>
Conclusion
We can add expandable table rows by populating Quasar’s q-table ‘s body slot.
