554 lines
24 KiB
Vue
Executable File
554 lines
24 KiB
Vue
Executable File
<template>
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<div>
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<div class="content-section introduction">
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<div class="feature-intro">
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<h1>DataTable <span>Lazy</span></h1>
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<p>
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Lazy mode is handy to deal with large datasets, instead of loading the entire data, small chunks of data is loaded by invoking corresponding callbacks everytime paging, sorting and filtering happens. Sample belows imitates lazy
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paging by using an in memory list. It is also important to assign the logical number of rows to totalRecords by doing a projection query for paginator configuration so that paginator displays the UI assuming there are actually
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records of totalRecords size although in reality they aren't as in lazy mode, only the records that are displayed on the current page exist. In addition, the implementation of <b>checkbox selection</b> in lazy tables is left
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entirely to the user since the DataTable does not have access to the whole dataset in order to define the checked state.
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</p>
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</div>
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<AppDemoActions />
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</div>
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<div class="content-section implementation">
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<div class="card">
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<DataTable
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:value="customers"
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:lazy="true"
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:paginator="true"
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:rows="10"
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v-model:filters="filters"
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ref="dt"
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dataKey="id"
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:totalRecords="totalRecords"
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:loading="loading"
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@page="onPage($event)"
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@sort="onSort($event)"
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@filter="onFilter($event)"
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filterDisplay="row"
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:globalFilterFields="['name', 'country.name', 'company', 'representative.name']"
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responsiveLayout="scroll"
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v-model:selection="selectedCustomers"
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:selectAll="selectAll"
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@select-all-change="onSelectAllChange"
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@row-select="onRowSelect"
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@row-unselect="onRowUnselect"
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>
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<Column selectionMode="multiple" headerStyle="width: 3em"></Column>
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<Column field="name" header="Name" filterMatchMode="startsWith" ref="name" :sortable="true">
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<template #filter="{ filterModel, filterCallback }">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by name" />
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</template>
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</Column>
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<Column field="country.name" header="Country" filterField="country.name" filterMatchMode="contains" ref="country.name" :sortable="true">
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<template #filter="{ filterModel, filterCallback }">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by country" />
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</template>
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</Column>
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<Column field="company" header="Company" filterMatchMode="contains" ref="company" :sortable="true">
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<template #filter="{ filterModel, filterCallback }">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by company" />
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</template>
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</Column>
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<Column field="representative.name" header="Representative" filterField="representative.name" ref="representative.name" :sortable="true">
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<template #filter="{ filterModel, filterCallback }">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by representative" />
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</template>
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</Column>
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</DataTable>
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</div>
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</div>
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<AppDoc name="DataTableLazyDemo" :sources="sources" :service="['CustomerService']" github="datatable/DataTableLazyDemo.vue" />
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</div>
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</template>
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<script>
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import CustomerService from '../../service/CustomerService';
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export default {
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data() {
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return {
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loading: false,
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totalRecords: 0,
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customers: null,
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selectedCustomers: null,
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selectAll: false,
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filters: {
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name: { value: '', matchMode: 'contains' },
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'country.name': { value: '', matchMode: 'contains' },
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company: { value: '', matchMode: 'contains' },
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'representative.name': { value: '', matchMode: 'contains' }
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},
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lazyParams: {},
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columns: [
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{ field: 'name', header: 'Name' },
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{ field: 'country.name', header: 'Country' },
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{ field: 'company', header: 'Company' },
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{ field: 'representative.name', header: 'Representative' }
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],
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sources: {
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'options-api': {
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tabName: 'Options API Source',
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content: `
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<template>
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<div>
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<DataTable :value="customers" :lazy="true" :paginator="true" :rows="10" v-model:filters="filters" ref="dt" dataKey="id"
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:totalRecords="totalRecords" :loading="loading" @page="onPage($event)" @sort="onSort($event)" @filter="onFilter($event)" filterDisplay="row"
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:globalFilterFields="['name','country.name', 'company', 'representative.name']" responsiveLayout="scroll"
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v-model:selection="selectedCustomers" :selectAll="selectAll" @select-all-change="onSelectAllChange" @row-select="onRowSelect" @row-unselect="onRowUnselect">
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<Column selectionMode="multiple" headerStyle="width: 3em"></Column>
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<Column field="name" header="Name" filterMatchMode="startsWith" ref="name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by name"/>
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</template>
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</Column>
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<Column field="country.name" header="Country" filterField="country.name" filterMatchMode="contains" ref="country.name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by country"/>
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</template>
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</Column>
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<Column field="company" header="Company" filterMatchMode="contains" ref="company" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by company"/>
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</template>
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</Column>
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<Column field="representative.name" header="Representative" filterField="representative.name" ref="representative.name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by representative"/>
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</template>
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</Column>
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</DataTable>
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</div>
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</template>
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<script>
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import CustomerService from './service/CustomerService';
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export default {
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data() {
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return {
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loading: false,
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totalRecords: 0,
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customers: null,
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selectedCustomers: null,
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selectAll: false,
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filters: {
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'name': {value: '', matchMode: 'contains'},
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'country.name': {value: '', matchMode: 'contains'},
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'company': {value: '', matchMode: 'contains'},
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'representative.name': {value: '', matchMode: 'contains'},
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},
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lazyParams: {},
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columns: [
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{field: 'name', header: 'Name'},
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{field: 'country.name', header: 'Country'},
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{field: 'company', header: 'Company'},
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{field: 'representative.name', header: 'Representative'}
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]
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}
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},
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customerService: null,
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created() {
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this.customerService = new CustomerService();
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},
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mounted() {
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this.loading = true;
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this.lazyParams = {
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first: 0,
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rows: this.$refs.dt.rows,
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sortField: null,
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sortOrder: null,
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filters: this.filters
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};
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this.loadLazyData();
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},
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methods: {
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loadLazyData() {
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this.loading = true;
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setTimeout(() => {
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this.customerService.getCustomers(
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{lazyEvent: JSON.stringify( this.lazyParams )})
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.then(data => {
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this.customers = data.customers;
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this.totalRecords = data.totalRecords;
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this.loading = false;
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}
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);
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}, Math.random() * 1000 + 250);
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},
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onPage(event) {
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this.lazyParams = event;
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this.loadLazyData();
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},
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onSort(event) {
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this.lazyParams = event;
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this.loadLazyData();
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},
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onFilter() {
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this.lazyParams.filters = this.filters;
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this.loadLazyData();
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},
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onSelectAllChange(event) {
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const selectAll = event.checked;
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if (selectAll) {
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this.customerService.getCustomers().then(data => {
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this.selectAll = true;
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this.selectedCustomers = data.customers;
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});
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}
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else {
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this.selectAll = false;
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this.selectedCustomers = [];
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}
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},
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onRowSelect() {
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this.selectAll = this.selectedCustomers.length === this.totalRecords
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},
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onRowUnselect() {
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this.selectAll = false;
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}
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}
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}
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<\\/script>
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`
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},
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'composition-api': {
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tabName: 'Composition API Source',
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content: `
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<template>
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<div>
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<DataTable :value="customers" :lazy="true" :paginator="true" :rows="10" v-model:filters="filters" ref="dt" dataKey="id"
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:totalRecords="totalRecords" :loading="loading" @page="onPage($event)" @sort="onSort($event)" @filter="onFilter($event)" filterDisplay="row"
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:globalFilterFields="['name','country.name', 'company', 'representative.name']" responsiveLayout="scroll"
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v-model:selection="selectedCustomers" :selectAll="selectAll" @select-all-change="onSelectAllChange" @row-select="onRowSelect" @row-unselect="onRowUnselect">
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<Column selectionMode="multiple" headerStyle="width: 3em"></Column>
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<Column field="name" header="Name" filterMatchMode="startsWith" ref="name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by name"/>
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</template>
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</Column>
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<Column field="country.name" header="Country" filterField="country.name" filterMatchMode="contains" ref="country.name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by country"/>
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</template>
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</Column>
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<Column field="company" header="Company" filterMatchMode="contains" ref="company" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by company"/>
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</template>
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</Column>
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<Column field="representative.name" header="Representative" filterField="representative.name" ref="representative.name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<InputText type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by representative"/>
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</template>
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</Column>
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</DataTable>
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</div>
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</template>
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<script>
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import { ref, onMounted } from 'vue';
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import CustomerService from './service/CustomerService';
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export default {
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setup() {
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onMounted(() => {
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loading.value = true;
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lazyParams.value = {
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first: 0,
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rows: dt.value.rows,
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sortField: null,
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sortOrder: null,
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filters: filters.value
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};
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loadLazyData();
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})
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const dt = ref();
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const loading = ref(false);
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const totalRecords = ref(0);
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const customers = ref();
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const selectedCustomers = ref();
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const selectAll = ref(false);
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const customerService = ref(new CustomerService());
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const filters = ref({
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'name': {value: '', matchMode: 'contains'},
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'country.name': {value: '', matchMode: 'contains'},
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'company': {value: '', matchMode: 'contains'},
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'representative.name': {value: '', matchMode: 'contains'},
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});
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const lazyParams = ref({});
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const columns = ref([
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{field: 'name', header: 'Name'},
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{field: 'country.name', header: 'Country'},
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{field: 'company', header: 'Company'},
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{field: 'representative.name', header: 'Representative'}
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]);
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const loadLazyData = () => {
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loading.value = true;
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setTimeout(() => {
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customerService.value.getCustomers(
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{lazyEvent: JSON.stringify( lazyParams.value )})
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.then(data => {
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customers.value = data.customers;
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totalRecords.value = data.totalRecords;
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loading.value = false;
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}
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);
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}, Math.random() * 1000 + 250);
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};
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const onPage = (event) => {
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lazyParams.value = event;
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loadLazyData();
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};
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const onSort = (event) => {
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lazyParams.value = event;
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loadLazyData();
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};
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const onFilter = () => {
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lazyParams.value.filters = filters.value ;
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loadLazyData();
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}
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const onSelectAllChange = (event) => {
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const selectAll = event.checked;
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if (selectAll) {
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customerService.value.getCustomers().then(data => {
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selectAll.value = true;
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selectedCustomers.value = data.customers;
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});
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}
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else {
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selectAll.value = false;
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selectedCustomers.value = [];
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}
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}
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const onRowSelect = () => {
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selectAll.value = selectedCustomers.value.length === totalRecords.value;
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}
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const onRowUnselect = () => {
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selectAll.value = false;
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}
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return { dt, loading, totalRecords, customers, filters, lazyParams, columns, loadLazyData, onPage, onSort, onFilter, onSelectAllChange, onRowSelect, onRowUnselect }
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}
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}
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<\\/script>
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`
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},
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'browser-source': {
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tabName: 'Browser Source',
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imports: `<script src="https://unpkg.com/primevue@^3/datatable/datatable.min.js"><\\/script>
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<script src="https://unpkg.com/primevue@^3/column/column.min.js"><\\/script>
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<script src="./CustomerService.js"><\\/script>`,
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content: `<div id="app">
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<p-datatable :value="customers" :lazy="true" :paginator="true" :rows="10" v-model:filters="filters" ref="dt" dataKey="id"
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:totalRecords="totalRecords" :loading="loading" @page="onPage($event)" @sort="onSort($event)" @filter="onFilter($event)" filterDisplay="row"
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:globalFilterFields="['name','country.name', 'company', 'representative.name']" responsiveLayout="scroll"
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v-model:selection="selectedCustomers" :selectAll="selectAll" @select-all-change="onSelectAllChange" @row-select="onRowSelect" @row-unselect="onRowUnselect">
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<p-column selectionMode="multiple" headerStyle="width: 3em"></Column>
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<p-column field="name" header="Name" filter-match-mode="startsWith" ref="name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<p-inputtext type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by name"></p-inputtext>
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</template>
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</p-column>
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<p-column field="country.name" header="Country" filter-field="country.name" filter-match-mode="contains" ref="country.name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<p-inputtext type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by country"></p-inputtext>
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</template>
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</p-column>
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<p-column field="company" header="Company" filter-match-mode="contains" ref="company" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<p-inputtext type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by company"></p-inputtext>
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</template>
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</p-column>
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<p-column field="representative.name" header="Representative" filter-field="representative.name" ref="representative.name" :sortable="true">
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<template #filter="{filterModel,filterCallback}">
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<p-inputtext type="text" v-model="filterModel.value" @keydown.enter="filterCallback()" class="p-column-filter" placeholder="Search by representative"></p-inputtext>
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</template>
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</p-column>
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</p-datatable>
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</div>
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<script type="module">
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const { createApp, ref, onMounted } = Vue;
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const App = {
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setup() {
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onMounted(() => {
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loading.value = true;
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lazyParams.value = {
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first: 0,
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rows: dt.value.rows,
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sortField: null,
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sortOrder: null,
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filters: filters.value
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};
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loadLazyData();
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})
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const dt = ref();
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const loading = ref(false);
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const totalRecords = ref(0);
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const customers = ref();
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const selectedCustomers = ref();
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const selectAll = ref(false);
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const customerService = ref(new CustomerService());
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const filters = ref({
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'name': {value: '', matchMode: 'contains'},
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'country.name': {value: '', matchMode: 'contains'},
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'company': {value: '', matchMode: 'contains'},
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'representative.name': {value: '', matchMode: 'contains'},
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});
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const lazyParams = ref({});
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const columns = ref([
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{field: 'name', header: 'Name'},
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{field: 'country.name', header: 'Country'},
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{field: 'company', header: 'Company'},
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{field: 'representative.name', header: 'Representative'}
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]);
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const loadLazyData = () => {
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loading.value = true;
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setTimeout(() => {
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customerService.value.getCustomers(
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{lazyEvent: JSON.stringify( lazyParams.value )})
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.then(data => {
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customers.value = data.customers;
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totalRecords.value = data.totalRecords;
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loading.value = false;
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}
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);
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}, Math.random() * 1000 + 250);
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};
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const onPage = (event) => {
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lazyParams.value = event;
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loadLazyData();
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};
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const onSort = (event) => {
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lazyParams.value = event;
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loadLazyData();
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};
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const onFilter = () => {
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lazyParams.value.filters = filters.value ;
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loadLazyData();
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}
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const onSelectAllChange = (event) => {
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const selectAll = event.checked;
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if (selectAll) {
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customerService.value.getCustomers().then(data => {
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selectAll.value = true;
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selectedCustomers.value = data.customers;
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});
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}
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else {
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selectAll.value = false;
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selectedCustomers.value = [];
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}
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}
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const onRowSelect = () => {
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selectAll.value = selectedCustomers.value.length === totalRecords.value;
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}
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const onRowUnselect = () => {
|
|
selectAll.value = false;
|
|
}
|
|
|
|
return { dt, loading, totalRecords, customers, filters, lazyParams, columns, loadLazyData, onPage, onSort, onFilter, onSelectAllChange, onRowSelect, onRowUnselect }
|
|
},
|
|
components: {
|
|
"p-datatable": primevue.datatable,
|
|
"p-column": primevue.column,
|
|
"p-inputtext": primevue.inputtext
|
|
}
|
|
};
|
|
|
|
createApp(App)
|
|
.use(primevue.config.default)
|
|
.mount("#app");
|
|
<\\/script>
|
|
`
|
|
}
|
|
}
|
|
};
|
|
},
|
|
customerService: null,
|
|
created() {
|
|
this.customerService = new CustomerService();
|
|
},
|
|
mounted() {
|
|
this.loading = true;
|
|
|
|
this.lazyParams = {
|
|
first: 0,
|
|
rows: this.$refs.dt.rows,
|
|
sortField: null,
|
|
sortOrder: null,
|
|
filters: this.filters
|
|
};
|
|
|
|
this.loadLazyData();
|
|
},
|
|
methods: {
|
|
loadLazyData() {
|
|
this.loading = true;
|
|
|
|
setTimeout(() => {
|
|
this.customerService.getCustomers({ lazyEvent: JSON.stringify(this.lazyParams) }).then((data) => {
|
|
this.customers = data.customers;
|
|
this.totalRecords = data.totalRecords;
|
|
this.loading = false;
|
|
});
|
|
}, Math.random() * 1000 + 250);
|
|
},
|
|
onPage(event) {
|
|
this.lazyParams = event;
|
|
this.loadLazyData();
|
|
},
|
|
onSort(event) {
|
|
this.lazyParams = event;
|
|
this.loadLazyData();
|
|
},
|
|
onFilter() {
|
|
this.lazyParams.filters = this.filters;
|
|
this.loadLazyData();
|
|
},
|
|
onSelectAllChange(event) {
|
|
const selectAll = event.checked;
|
|
|
|
if (selectAll) {
|
|
this.customerService.getCustomers().then((data) => {
|
|
this.selectAll = true;
|
|
this.selectedCustomers = data.customers;
|
|
});
|
|
} else {
|
|
this.selectAll = false;
|
|
this.selectedCustomers = [];
|
|
}
|
|
},
|
|
onRowSelect() {
|
|
this.selectAll = this.selectedCustomers.length === this.totalRecords;
|
|
},
|
|
onRowUnselect() {
|
|
this.selectAll = false;
|
|
}
|
|
}
|
|
};
|
|
</script>
|