[英]How to achieve dynamic column hiding in angular-datatable?
我有以下数据表结构
<table id="display" datatable="ng" dt-options="dtOptions" dt-column-defs="dtColumnDefs" class="table table-striped table-bordered hover" cellspacing="0" width="100%">
<thead>
<tr>
<th>INPUT TYPE</th>
<th>INPUT NAME</th>
<th>VALUE</th>
<th>UNIT</th>
<th ng-repeat="n in TableColumns | orderBy:'Name'">{{n.Name}}</th>
<th class="noExport" style="width:50px">VIEW</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="x in DisplayData">
<td>{{x.Type}}</td>
<td>{{x.Name}}</td>
<td>{{x.Value}}</td>
<td>{{x.Unit}}</td>
<td ng-repeat="n in x.OptionData | orderBy:'Name'">{{n.Value}}</td>
<td>
<a ng-click="gotoLink(x)"><span class="glyphicon glyphicon-eye-open"></span></a>
</td>
</tbody>
以下是角度代码
$scope.TableColumns = [];
$scope.getAllData = function (item) {
var DashboardData = item;
resultService.getDataById(fetchData).then(function (response) {
if (response.data.length > 0) {
$scope.DisplayData = response.data;
$scope.TableColumns = response.data[0].OptionData;
}
});
}
和response.data [0] .OptionData看起来像
var result = [{OptionsId: 1, Name: "Pressure", Value: 10}
{OptionsId: 2, Name: "Temperature", Value: 20}
{OptionsId: 3, Name: "Humidity",Value: 30},.....];
如何动态隐藏结果集中的$ scope.TableColumns列,考虑它有大约50个结果,但我想显示10个结果,而其他所有结果都应在初始加载时隐藏?
DataTable实际上确实具有columns.visible
选项(这也适用于columnDefs
)。 您可以通过dtColumnDefs
设置初始可见性(例如):
DTColumnDefBuilder
.newColumnDef(0)
.withOption('data', 'office')
.withTitle('office')
.withOption('visible', false)
有一个notVisible()
“速记”。 您可以随时通过dtInstance
(您似乎没有使用)来更改可见性。 在表中添加dt-instance
属性:
<table datatable="ng"
...
dt-instance="dtInstanceCallback">
dtInstanceCallback
以下方式实现dtInstanceCallback
:
$scope.dtInstanceCallback = function(instance) {
$scope.dtInstance = instance
}
现在,您可以即时更改列的可见性
$scope.dtInstance.DataTable.column(0).visible(true) //or false
我找到了一个简单的解决方案
首先在$ scope.TableColumns数组中附加一个字段,例如'visibility'= true或false。
$scope.TableColumns = [{OptionsId: 1, Name: "Pressure", Value: 10, visibility: true}
{OptionsId: 2, Name: "Temperature", Value: 20,visibility: false}
{OptionsId: 3, Name: "Humidity",Value: 30,visibility: true},.....];
然后更改以下部分
$scope.dtColumnDefs = [];
$scope.TableColumns = [];
$scope.getAllData = function (item) {
var DashboardData = item;
resultService.getDataById(fetchData).then(function (response) {
if (response.data.length > 0) {
$scope.DisplayData = response.data;
$scope.TableColumns = response.data[0].OptionData;
angular.forEach($scope.SiteTableColumns, function (v, k) {
var index = 4 + k; //0-3 index value of columns manually set in the table and k+1 for array index
if (v.visibility == true) {
$scope.dtColumnDefs.push(DTColumnDefBuilder.newColumnDef(index).withTitle(v.Name));
} else {
$scope.dtColumnDefs.push(DTColumnDefBuilder.newColumnDef(index).withTitle(v.Name).notVisible());
}
});
}
});
}
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