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| <template>
<div>
<v-data-table
:headers="headers"
:items="desserts"
:options.sync="options"
:server-items-length="totalDesserts"
:loading="loading"
class="elevation-1"
></v-data-table>
</div>
</template>
<script>
export default {
name: "HelloWorld",
data() {
return {
totalDesserts: 0,
desserts: [],
loading: true,
options: {},
headers: [
{
text: "Dessert (100g serving)",
align: "start",
sortable: false,
value: "name",
},
{ text: "Calories", value: "calories" },
{ text: "Fat (g)", value: "fat" },
],
};
},
watch: {
options: {
async handler() {
const { items, total } = await this.getDataFromApi();
this.desserts = items;
this.totalDesserts = total;
},
deep: true,
},
},
async mounted() {
const { items, total } = await this.getDataFromApi();
this.desserts = items;
this.totalDesserts = total;
},
methods: {
getDataFromApi() {
this.loading = true;
return new Promise((resolve) => {
const { sortBy, sortDesc, page, itemsPerPage } = this.options;
let items = this.getDesserts();
const total = items.length;
if (sortBy.length === 1 && sortDesc.length === 1) {
items = items.sort((a, b) => {
const sortA = a[sortBy[0]];
const sortB = b[sortBy[0]];
if (sortDesc[0]) {
if (sortA < sortB) return 1;
if (sortA > sortB) return -1;
return 0;
} else {
if (sortA < sortB) return -1;
if (sortA > sortB) return 1;
return 0;
}
});
}
if (itemsPerPage > 0) {
items = items.slice((page - 1) * itemsPerPage, page * itemsPerPage);
}
setTimeout(() => {
this.loading = false;
resolve({
items,
total,
});
}, 1000);
});
},
getDesserts() {
return [
{
name: "Frozen Yogurt",
calories: 159,
fat: 6.0,
},
{
name: "Ice cream sandwich",
calories: 237,
fat: 9.0,
},
{
name: "Eclair",
calories: 262,
fat: 16.0,
},
];
},
},
};
</script>
|
