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Use filter bar template in foreign key column in JavaScript (ES5) Grid control

You can use the filter bar template in foreign key column by defining the column.filterBarTemplate property. The following example demonstrates the way to use filter bar template in foreign column.

In the following example, The Employee Name is a foreign key column. This column header shows the custom filter bar template and you can select filter value by using the DropDown options.

Source
Preview
index.js
index.html
ej.grids.Grid.Inject(ej.grids.ForeignKey, ej.grids.Filter);
var grid = new ej.grids.Grid({
    dataSource: data.slice(0,10),
    allowFiltering: true,
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 100 },
        {
            field: 'EmployeeID', headerText: 'Employee Name', width: 150, foreignKeyValue: 'FirstName', dataSource: fEmployeeData,
            filterBarTemplate: {
                create: function(args) {
                    return ej.base.createElement('input', { className: 'flm-input' });
                },
                write: function(args) {
                    fEmployeeData.splice(0, 0, {'FirstName': 'All'}); // for clear filtering
                    var dropInstance = new ej.dropdowns.DropDownList({
                        dataSource: new ej.data.DataManager(fEmployeeData),
                        fields: { text: 'FirstName' },
                        placeholder: 'Select a value',
                        popupHeight: '200px',
                        index: 0,
                        change: function(args) {
                            if (args.value !== 'All') {
                                grid.filterByColumn('EmployeeID', 'equal', args.value);
                            }
                            else {
                                grid.removeFilteredColsByField('EmployeeID');
                            }
                        }
                    });
                    dropInstance.appendTo(args.element);
                }
            }
        },
        { field: 'Freight', headerText: 'Freight', width: 100, textAlign: 'Right'},
        { field: 'ShipName', headerText: 'Ship Name', width: 180 }
    ],
    height: 260
});
grid.appendTo('#Grid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="Grid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
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