Angular Datatables-重新加载数据 [英] Angular Datatables - reload data
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问题描述
我将angular 6与angular-datatables一起使用.
I use angular 6 with angular-datatables.
我尝试定义一个渲染"按钮，以便像这样重新加载数据:
I try to define a "rerender" button in order to reload data like this exemple :
https://l-lin.github.io/angular -datatables/#/advanced/rerender
我的数据表比示例中描述的数据表复杂，我遇到了单个列过滤器使用的问题:
My datatable is more complex than the one described in the exemple and I get an issue with individual columns filters use:
这是我的表，在使用过滤器进行重新渲染操作之前，一切正常:
This is my table before rerender action with filters use, all works fine:
但是当我在重新加载数据后使用这些过滤器时，结果如下: 我的不可见列现在可见，页面信息也未更新..
But when I use these filters after data are reloaded, this is the result : My non-visible column is now visible and page info are not updated..
这是我的TS文件:
// Lifecycle hook that is called after a component's view has been fully initialized
ngAfterViewInit() {
console.log('ContactsComponent - ngAfterViewInit()');
this.dtTrigger.next();
this.datatableElement.dtInstance.then((dtInstance: DataTables.Api) => {
// console.log(dtInstance);
// console.log(dtInstance.data());
dtInstance.columns().every(function () {
const that = this;
$('input', this.footer()).on('keyup change', function () {
if (that.search() !== this['value']) {
that.search(this['value'])
.draw();
}
});
});
});
}
ngOnDestroy(): void {
console.log('ngDestroy');
// Do not forget to unsubscribe the event
this.dtTrigger.unsubscribe();
}
rerender(): void {
this.datatableElement.dtInstance.then((dtInstance: DataTables.Api) => {
dtInstance.columns().every(function () {
$('input', this.footer()).val('').change();
});
// Destroy the table first
dtInstance.destroy();
// Call the dtTrigger to rerender again
this.dtTrigger.next();
});
}
这是我的dtOptons配置:
Here is my dtOptons config :
this.dtOptions = {
pagingType: 'full_numbers',
// displayLength: 10,
// serverSide: true, // si true, execute l'appel ajax, puis l'exécute à chaque utilisation d'un des filtres
// processing: true,
ajax: (dataTablesParameters: any, callback) => {
console.log('ContactsComponent - call Ajax()');
that.selectedList = [];
that.http.get<ApiResponse>('/api/contacts')
.subscribe(resp => {
that.contactList = resp.content;
that.loading = false;
callback({
data: that.contactList
});
},
error => {
console.log('authService.login error' + error);
console.log('error status : ' + error.status);
this.myJarviaServices.showNotification('top', 'center', error,
'danger', 1000);
this.alertService.error(error);
});
},
// deferRender: true,
columns: [
{
// title: 'Selection',
data: null },
{
// title: 'Identifiant',
data: 'identifiant' } ,
{
// title: 'Nom',
data: 'nom' },
{
// title: 'Prénom',
data: 'prenom' }
,
{
// title: 'Action',
data: null },
{
// title: 'Action',
data: 'idaicontact'}
],
columnDefs: [
{
orderable: false,
// className: 'my_class', // classname définit une checkbox par dessus une case vide [object Object] (data: null)
targets: [0],
render: function(data, type, full, meta) {
return'<input type="checkbox" class="unique-class mat-checkbox mat-accent mat-checkbox-anim-checked-unchecked ' +
'mat-checkbox-inner-container mat-checkbox-inner-container-no-side-margin">';
}
},
{
targets: [4],
visible: true,
data: 'action',
render: function(data, type, full, meta) {
return '<a class="btn btn-link btn-success btn-just-icon btn-edit" title="Editer">' +
'<i class="material-icons">create</i></a>' +
'<a class="btn btn-link btn-danger btn-just-icon btn-remove" title="Supprimer">' +
'<i class="material-icons">delete</i></a>' +
'<a class="btn btn-link btn-info btn-just-icon btn-read" title="Consulter">' +
'<i class="material-icons">visibility</i></a>'
}
},
{
targets: [5],
visible: false
}
],
rowCallback: (row: Node, data: any[] | Object, index: number) => {
const self = this;
// Unbind first in order to avoid any duplicate handler
// (see https://github.com/l-lin/angular-datatables/issues/87)
// $('td:first-child', row).unbind('click');
// $('td:first-child', row).bind('click', () => {
const elt = $('td', row).find('[type="checkbox"]');
if (elt) {
elt.unbind('click');
elt.bind('click', () => {
if (elt[0].checked) {
that.selectedList.push(data as Contact)
} else {
const itemIndex = this.selectedList.indexOf(data as Contact);
that.selectedList.splice(itemIndex, 1);
}
console.log(that.selectedList.length + ' éléments sélectionés');
this.selectedList.forEach((item) => {
console.log(item)
})
});
}
const eltedit = $('td', row).find('a.btn-edit');
if (eltedit) {
eltedit.unbind('click');
eltedit.bind('click', () => {
console.log(data);
this.crudContact(data, 2);
});
}
const eltrem = $('td', row).find('a.btn-remove');
if (eltrem) {
eltrem.unbind('click');
eltrem.bind('click', () => {
this.crudContact(data, 4);
});
}
const eltread = $('td', row).find('a.btn-read');
if (eltread) {
eltread.unbind('click');
eltread.bind('click', () => {
this.crudContact(data, 5);
});
}
return row;
},
lengthMenu: [[5, 10, 25, 50, -1], [5, 10, 25, 50, 'Tous']],
responsive: true,
language: {
lengthMenu: 'Afficher _MENU_ enregistrements par page',
zeroRecords: 'Aucun contact disponible',
info: '_START_ à _END_ sur un total de _TOTAL_ enregistrements',
// info: ' Page _PAGE_ sur _PAGES_',
infoEmpty: 'Aucun contact disponible',
infoFiltered: '(filtré(s) sur _MAX_ enregistrements)',
paginate: {
first: 'Premier',
last: 'dernier',
next: 'Suivant',
previous: 'Precedent'
},
search: '_INPUT_',
searchPlaceholder: 'Recherche',
},
order: [[1, 'desc']],
// Declare the use of the extension in the dom parameter
dom: 'Blfrtip',
stateSave: true,
buttons: [
{
extend: 'print',
className: 'btn btn-info btn-round btn-fab btn-fab-mini',
text: '<i class="material-icons" title="Imprimer">print</i>',
exportOptions: {
columns: [1, 2, 3]
}
},
{
extend: 'pdfHtml5',
className: 'btn btn-danger btn-round btn-fab btn-fab-mini',
text: '<i class="material-icons" title="Exporter au format pdf">save</i>',
exportOptions: {
columns: [1, 2, 3]
}
},
{
extend: 'excel',
className: 'btn btn-success btn-round btn-fab btn-fab-mini',
text: '<i class="material-icons" title="Exporter au format xls">save</i>',
exportOptions: {
columns: [1, 2, 3]
}
},
{
text: '<i class="material-icons" title="Supprimer">delete</i>',
className: 'btn btn-danger btn-round btn-fab btn-fab-mini',
action: function (e, dt, node, config) {
that.checkSelect(dt);
}
},
// {
// text: '<i class="material-icons" title="Actualiser">replay</i>',
// className: 'btn btn-primary btn-round btn-fab btn-fab-mini',
// action: function (e, dt, node, config) {
// that.refresh();
// }
// },
{
text: '<i class="material-icons" title="Nouveau">add</i>',
className: 'btn btn-warning btn-round btn-fab btn-fab-mini',
action: function (e, dt, node, config) {
that.crudContact(null, 1);
}
}
]
};
这是我的HTML文件:
Here is my HTML file :
<table datatable [dtOptions]="dtOptions" [dtTrigger]="dtTrigger" class="table table-striped table-no-bordered table-hover" cellspacing="0" width="100%" style="width:100%">
<!--<table #dataTable class="table table-striped table-no-bordered table-hover" cellspacing="0" width="100%" style="width:100%">-->
<tfoot>
<tr>
<th>Sélection</th>
<!--<th>id</th>-->
<th><input type="text" placeholder="Recherche Identifiant" name="search-identifiant"/></th>
<th><input type="text" placeholder="Recherche Nom" name="search-nom"/></th>
<th><input type="text" placeholder="Recherche prénom" name="search-prenom"/></th>
<th>Action</th>
<th>#</th>
</tr>
</tfoot>
<thead>
<tr>
<th style="width: 1%">
<mat-checkbox (change)="$event ? masterToggle() : null"
[checked]="selection.hasValue() && isAllSelected(contactList.length)">
</mat-checkbox>
</th>
<th><b>Identifiant</b></th>
<th><b>Nom</b></th>
<th><b>Prenom</b></th>
<th><b>Action</b></th>
<th><b>#</b></th>
</tr>
</thead>
</table>
推荐答案
找到了！
首先:在方法中移动过滤器代码，例如:
Firstly : Move filter code in method, example :
afterView() {
this.datatableElement.dtInstance.then((dtInstance: DataTables.Api) => {
// console.log(dtInstance);
// console.log(dtInstance.data());
dtInstance.columns().every(function () {
const that = this;
$('input', this.footer()).on('keyup change', function () {
if (that.search() !== this['value']) {
that.search(this['value'])
.draw();
}
});
});
// dtInstance.on('search.dt', function() {
// // Do you stuff
// console.log('search: ' + dtInstance.search());
// });
});
}
因此，当应用过滤器时，此方法称为:
So when filters are applied, this method is called as following :
ngAfterViewInit() {
console.log('ContactsComponent - ngAfterViewInit()');
this.dtTrigger.next();
this.afterView();
}
应用过滤器并称为rerender方法时，必须在加载数据后重新调用此方法:
When a filter is applied and that we call rerender method, we must recall this method after loading data :
ajax: (dataTablesParameters: any, callback) => {
console.log('ContactsComponent - call Ajax()');
that.selectedList = [];
that.http.get<ApiResponse>('/api/contacts')
.subscribe(resp => {
that.contactList = resp.content;
that.loading = false;
// on charge la table telle qu'elle était avant le reloading (filtres éventuels)
this.afterView();
callback({
data: that.contactList
});
},
error => {
console.log('authService.login error' + error);
console.log('error status : ' + error.status);
this.alertService.error(error);
this.myJarviaServices.error(error);
});
},
效果很好！
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