Fix #841 - New Lazy DataTable Demo with Remote Source

src/service/CustomerService.js

@@ -18,7 +18,7 @@ export default class CustomerService {
 		return axios.get('demo/data/customers-xlarge.json').then(res => res.data.data);
   }
   
-  getCustomers() {
+  getCustomers(params) {
-    return axios.get('https://www.primefaces.org/data/customers').then(res => res.data.customers)
+    return axios.get('https://www.primefaces.org/data/customers', { params }).then(res => res.data)
   }
 }

src/views/datatable/DataTableLazyDemo.vue

@@ -12,12 +12,35 @@
 
 		<div class="content-section implementation">
             <div class="card">
-                <DataTable :value="customers" :lazy="true" :paginator="true" :rows="10"
+                <DataTable :value="customers" :lazy="true" :paginator="true" :rows="10" :filters="filters" ref="dt"
-                    :totalRecords="totalRecords" :loading="loading" @page="onPage($event)">
+                    :totalRecords="totalRecords" :loading="loading" @page="onPage($event)" @sort="onSort">
-                    <Column field="name" header="Name"></Column>
+                    <Column field="name" header="Name" filterMatchMode="startsWith" ref="name" :sortable="true">  
-                    <Column field="country.name" header="Country"></Column>
+                        <template #filter>
-                    <Column field="company" header="Company"></Column>
+                            <InputText type="text" v-model="filters['name']" @keydown="onFilter($event)" class="p-column-filter" placeholder="Search by name"/>
-                    <Column field="representative.name" header="Representative"></Column>
+                        </template>                    
+                    </Column>
+                    <Column field="country.name" header="Country" filterField="country.name" filterMatchMode="contains" ref="country.name" :sortable="true">
+                        <template #filter>
+                            <InputText type="text" v-model="filters['country.name']" @keydown="onFilter($event)" class="p-column-filter" placeholder="Search by country"/>
+                        </template>
+                    </Column>
+                    <Column field="company" header="Company" filterMatchMode="contains" ref="company" :sortable="true">
+                        <template #filter>
+                            <InputText type="text" v-model="filters['company']" @keydown="onFilter($event)" class="p-column-filter" placeholder="Search by company"/>
+                        </template>
+                    </Column>
+                    <Column field="representative.name" header="Representative" filterField="representative.name" filterMatchMode="contains" ref="representative.name" :sortable="true">
+                        <template #filter>
+                            <MultiSelect v-model="filters['representative.name']" :options="representatives" optionLabel="name" optionValue="name" @change="onFilter($event)" placeholder="All" class="p-column-filter">
+                                <template #option="slotProps">
+                                    <div class="p-multiselect-representative-option">
+                                        <img :alt="slotProps.option.name" :src="'demo/images/avatar/' + slotProps.option.image" width="32" style="vertical-align: middle" />
+                                        <span class="image-text">{{slotProps.option.name}}</span>
+                                    </div>
+                                </template>
+                            </MultiSelect>
+                        </template>
+                    </Column>
                 </DataTable>
             </div>
 		</div>
@@ -27,12 +50,35 @@
                 <TabPanel header="Source">
 <pre v-code>
 <code><template v-pre>
-&lt;DataTable :value="customers" :lazy="true" :paginator="true" :rows="10"
+&lt;DataTable :value="customers" :lazy="true" :paginator="true" :rows="10" :filters="filters" ref="dt"
-    :totalRecords="totalRecords" :loading="loading" @page="onPage($event)"&gt;
+    :totalRecords="totalRecords" :loading="loading" @page="onPage($event)" @sort="onSort"&gt;
-    &lt;Column field="name" header="Name"&gt;&lt;/Column&gt;
+    &lt;Column field="name" header="Name" filterMatchMode="startsWith" ref="name" :sortable="true"&gt;
-    &lt;Column field="country.name" header="Country"&gt;&lt;/Column&gt;
+        &lt;template #filter&gt;
-    &lt;Column field="company" header="Company"&gt;&lt;/Column&gt;
+            &lt;InputText type="text" v-model="filters['name']" @keydown="onFilter($event)" class="p-column-filter" placeholder="Search by name"/&gt;
-    &lt;Column field="representative.name" header="Representative"&gt;&lt;/Column&gt;
+        &lt;/template&gt;
+    &lt;/Column&gt;
+    &lt;Column field="country.name" header="Country" filterField="country.name" filterMatchMode="contains" ref="country.name" :sortable="true"&gt;
+        &lt;template #filter&gt;
+            &lt;InputText type="text" v-model="filters['country.name']" @keydown="onFilter($event)" class="p-column-filter" placeholder="Search by country"/&gt;
+        &lt;/template&gt;
+    &lt;/Column&gt;
+    &lt;Column field="company" header="Company" filterMatchMode="contains" ref="company" :sortable="true"&gt;
+        &lt;template #filter&gt;
+            &lt;InputText type="text" v-model="filters['company']" @keydown="onFilter($event)" class="p-column-filter" placeholder="Search by company"/&gt;
+        &lt;/template&gt;
+    &lt;/Column&gt;
+    &lt;Column field="representative.name" header="Representative" filterField="representative.name" filterMatchMode="contains" ref="representative.name" :sortable="true"&gt;
+        &lt;template #filter&gt;
+            &lt;MultiSelect v-model="filters['representative.name']" :options="representatives" optionLabel="name" optionValue="name" @change="onFilter($event)" placeholder="All" class="p-column-filter"&gt;
+                &lt;template #option="slotProps"&gt;
+                    &lt;div class="p-multiselect-representative-option"&gt;
+                        &lt;img :alt="slotProps.option.name" :src="'demo/images/avatar/' + slotProps.option.image" width="32" style="vertical-align: middle" /&gt;
+                        &lt;span class="image-text"&gt;{{slotProps.option.name}}&lt;/span&gt;
+                    &lt;/div&gt;
+                &lt;/template&gt;
+            &lt;/MultiSelect&gt;
+        &lt;/template&gt;
+    &lt;/Column&gt;
 &lt;/DataTable&gt;
 </template>
 </code></pre>
@@ -46,10 +92,28 @@ export default {
         return {
             loading: false,
             totalRecords: 0,
-            customers: null
+            customers: null,
+            filters: {},
+            representatives: [
+                {name: "Amy Elsner", image: 'amyelsner.png'},
+                {name: "Anna Fali", image: 'annafali.png'},
+                {name: "Asiya Javayant", image: 'asiyajavayant.png'},
+                {name: "Bernardo Dominic", image: 'bernardodominic.png'},
+                {name: "Elwin Sharvill", image: 'elwinsharvill.png'},
+                {name: "Ioni Bowcher", image: 'ionibowcher.png'},
+                {name: "Ivan Magalhaes",image: 'ivanmagalhaes.png'},
+                {name: "Onyama Limba", image: 'onyamalimba.png'},
+                {name: "Stephen Shaw", image: 'stephenshaw.png'},
+                {name: "XuXue Feng", image: 'xuxuefeng.png'}
+            ],
+            columns: [
+                {field: 'name', header: 'Name', placeholder: 'name', ref: 'name'},
+                {field: 'country.name', header: 'Country', placeholder: 'country', ref: 'country.name'},
+                {field: 'company', header: 'Company', placeholder: 'company', ref: 'company'},
+                {field: 'representative.name', header: 'Representative', placeholder: 'representative', ref: 'representative'}
+            ]
         }
     },
-    datasource: null,
     customerService: null,
     created() {
         this.customerService = new CustomerService();
@@ -57,23 +121,88 @@ export default {
     mounted() {
         this.loading = true;
 
-        setTimeout(() => {
+        this.customerService.getCustomers({lazyEvent: JSON.stringify({first: 0, rows: this.$refs.dt.rows})}).then(data => {
-            this.customerService.getCustomers().then(data => {
+            this.customers = data.customers;
-                this.datasource = data;
+            this.totalRecords = data.totalRecords;
-                this.totalRecords = data.length,
-                this.customers = this.datasource.slice(0, 10);
             this.loading = false;
         });
-        }, 500);
     },
     methods: {
-        onPage(event) {
+        onLazyEvent(event) {
+            const filters = {};
+            const x = JSON.parse(JSON.stringify(this.filters));
+            const y = Object.keys(x);
+
+            for(let i=0; i &lt;this.columns.length; i++) {
+                let obj = {};
+                obj.matchMode = this.$refs[this.columns[i].field].filterMatchMode || "startsWith";
+                for(let j=0; j &lt; y.length; j++) {
+                    if(this.columns[i].field === y[j]) {
+                        obj.value = this.filters[this.columns[i].field];
+                    }
+                    else obj.value = null;
+                }
+                filters[this.columns[i].field] = obj;
+            }
+          
             this.loading = true;
+            let params = {
+                first: event.first,
+                rows: event.rows,
+                sortField: event.sortField,
+                sortOrder: event.sortOrder,
+                filters: filters
+            };
 
             setTimeout(() => {
-                this.customers = this.datasource.slice(event.first, event.first + event.rows);
+                this.customerService.getCustomers({lazyEvent: JSON.stringify( params )}).then(data => {
+                    this.customers = data.customers;
+                    this.totalRecords = data.totalRecords;
                     this.loading = false;
-            }, 500);
+                });
+            }, 1000);
+        },
+        onPage(event) {
+            this.onLazyEvent(event);
+        },
+        onSort(event) {
+            this.onLazyEvent(event);
+        },
+        onFilter(event) {
+            if(event.keyCode === 13 || event.value) {
+                const filters = {}; 
+                const x = JSON.parse(JSON.stringify(this.filters));
+                const y = Object.keys(x);
+
+                for(let i=0; i &lt; this.columns.length; i++) {
+                    let obj = {};
+                    obj.matchMode = this.$refs[this.columns[i].field].filterMatchMode || "startsWith";
+                    for(let j=0; j &lt; y.length; j++) {
+                        if(this.columns[i].field === y[j]) {
+                            obj["value"] = this.filters[this.columns[i].field];
+                        }
+                        else obj["value"] = null;
+                    }
+                    filters[this.columns[i].field] = obj;
+                }
+
+                this.loading = true;
+                let params = {
+                    first: 0,
+                    rows: this.$refs.dt.rows,
+                    sortField: null,
+                    sortOrder: null,
+                    filters: filters
+                };
+
+                setTimeout(() => {
+                    this.customerService.getCustomers({lazyEvent: JSON.stringify( params )}).then(data => {
+                        this.customers = data.customers;
+                        this.totalRecords = data.totalRecords;
+                        this.loading = false;
+                    });
+                }, 1000);
+            }
         }
     }
 }
@@ -93,10 +222,28 @@ export default {
         return {
             loading: false,
             totalRecords: 0,
-            customers: null
+            customers: null,
+            filters: {},
+            representatives: [
+                {name: "Amy Elsner", image: 'amyelsner.png'},
+                {name: "Anna Fali", image: 'annafali.png'},
+                {name: "Asiya Javayant", image: 'asiyajavayant.png'},
+                {name: "Bernardo Dominic", image: 'bernardodominic.png'},
+                {name: "Elwin Sharvill", image: 'elwinsharvill.png'},
+                {name: "Ioni Bowcher", image: 'ionibowcher.png'},
+                {name: "Ivan Magalhaes",image: 'ivanmagalhaes.png'},
+                {name: "Onyama Limba", image: 'onyamalimba.png'},
+                {name: "Stephen Shaw", image: 'stephenshaw.png'},
+                {name: "XuXue Feng", image: 'xuxuefeng.png'}
+            ],
+            columns: [
+                {field: 'name', header: 'Name', placeholder: 'name', ref: 'name'},
+                {field: 'country.name', header: 'Country', placeholder: 'country', ref: 'country.name'},
+                {field: 'company', header: 'Company', placeholder: 'company', ref: 'company'},
+                {field: 'representative.name', header: 'Representative', placeholder: 'representative', ref: 'representative'}
+            ]
         }
     },
-    datasource: null,
     customerService: null,
     created() {
         this.customerService = new CustomerService();
@@ -104,23 +251,90 @@ export default {
     mounted() {
         this.loading = true;
 
-        setTimeout(() => {
+        this.customerService.getCustomers({lazyEvent: JSON.stringify({first: 0, rows: this.$refs.dt.rows})}).then(data => {
-            this.customerService.getCustomers().then(data => {
+            this.customers = data.customers;
-                this.datasource = data;
+            this.totalRecords = data.totalRecords;
-                this.totalRecords = data.length,
-                this.customers = this.datasource.slice(0, 10);
             this.loading = false;
         });
-        }, 500);
     },
     methods: {
-        onPage(event) {
+        onLazyEvent(event) {
+            const filters = {};
+            // proxy to object
+            const x = JSON.parse(JSON.stringify(this.filters));
+            const y = Object.keys(x);
+
+            for(let i=0; i<this.columns.length; i++) {
+                let obj = {};
+                obj.matchMode = this.$refs[this.columns[i].field].filterMatchMode || "startsWith";
+                for(let j=0; j<y.length; j++) {
+                    if(this.columns[i].field === y[j]) {
+                        obj.value = this.filters[this.columns[i].field];
+                    }
+                    else obj.value = null;
+                }
+                filters[this.columns[i].field] = obj;
+            }
+          
             this.loading = true;
+            let params = {
+                first: event.first,
+                rows: event.rows,
+                sortField: event.sortField,
+                sortOrder: event.sortOrder,
+                filters: filters
+            };
 
             setTimeout(() => {
-                this.customers = this.datasource.slice(event.first, event.first + event.rows);
+                this.customerService.getCustomers({lazyEvent: JSON.stringify( params )}).then(data => {
+                    this.customers = data.customers;
+                    this.totalRecords = data.totalRecords;
                     this.loading = false;
-            }, 500);
+                });
+            }, 1000);
+        },
+        onPage(event) {
+            this.onLazyEvent(event);
+        },
+        onSort(event) {
+            this.onLazyEvent(event);
+        },
+        onFilter(event) {
+            if(event.keyCode === 13 || event.value) {
+                const filters = {}; 
+                // proxy to object
+                const x = JSON.parse(JSON.stringify(this.filters));
+                const y = Object.keys(x);
+
+                for(let i=0; i<this.columns.length; i++) {
+                    let obj = {};
+                    obj.matchMode = this.$refs[this.columns[i].field].filterMatchMode || "startsWith";
+                    for(let j=0; j<y.length; j++) {
+                        if(this.columns[i].field === y[j]) {
+                            obj["value"] = this.filters[this.columns[i].field];
+                        }
+                        else obj["value"] = null;
+                    }
+                    filters[this.columns[i].field] = obj;
+                }
+
+                this.loading = true;
+                let params = {
+                    first: 0,
+                    rows: this.$refs.dt.rows,
+                    sortField: null,
+                    sortOrder: null,
+                    filters: filters
+                };
+
+                setTimeout(() => {
+                    this.customerService.getCustomers({lazyEvent: JSON.stringify( params )}).then(data => {
+                        this.customers = data.customers;
+                        this.totalRecords = data.totalRecords;
+                        this.loading = false;
+                    });
+                }, 1000);
+            }
         }
     }
 }