Unveiling the secret to accessing the table itself from dtOptions in AngularJS-Datatables

I'm trying to create a download button for a CSV file, but I need to exclude specific columns from the table.

I have discovered an option called "exportOptions" that is used in jQuery DataTables to define which columns should be exported. It seems that the "table.column()" method can be used to select the desired columns.

However, I am using angular-datatables and I haven't been able to figure out how to select specific columns using this framework.

Does anyone know of a solution?

<table dt-options="dtOptions" dt-column-defs="dtColumnDef">
    <thead>
        <tr>
            <th>Column A</th>
            <th>Column B</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>Data A</td>
            <td>Data B</td>
        </tr>
    </tbody>
</table>

<script>
    // Here is inside my controller

    $scope.dtOptions = DTOptionsBuilder
    .newOptions()
    .withDOM('tB')
    .withButtons([
    {
        text: 'Download CSV',
        extend: 'csv',
        exportOptions:
        {
            // I need to select certain columns here,
            // similar to using the "table.columns(0)" method mentioned in the jQuery DataTables documentation,
            // but I cannot figure out how to do it using angular-datatables.
        }
    }]);
</script>

I am using the Angular way to render the table.

Answer №1

When it comes to DataTables, there is no distinguishing factor between the angular approach and a pure jQuery DataTable. An important point to note is that you don't have to access the table instance in the exportOptions. Instead, what you should focus on is returning a column selector. Here are a few examples of column selectors to consider (since I'm not certain about your exact goal):

exportOptions: {
  columns: [0,4,5] //choose specific columns by index
}
exportOptions: {
  columns: 'th' //select any column
}
exportOptions: {
  columns: ['th:eq(1)', 'th:eq(5)'] //equivalent to using an array with numeric indices
}
exportOptions: {
  columns: 'th:not(:first)' //omit the first column
} 
exportOptions: {
  columns: 'th:not(.no-export)' //exclude columns labeled with the "no-export" class
} 

This is merely a snippet of possible options.

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