/**
     * Render extra filtering option in
     * top of the table
     *
     * @since 1.0
     *
     * @param  string $which
     *
     * @return void
     */
    function extra_tablenav($which)
    {
        if ($which != 'top') {
            return;
        }
        $groups = erp_crm_get_contact_group_dropdown(['' => __('All Groups', 'wp-erp')]);
        $selected_group = isset($_GET['filter_contact_group']) ? $_GET['filter_contact_group'] : 0;
        ?>
        <div class="alignleft actions">

            <label class="screen-reader-text" for="new_role"><?php 
        _e('Filter by Group', 'wp-erp');
        ?>
</label>
            <select name="filter_contact_group" id="filter_contact_group">
                <?php 
        foreach ($groups as $key => $group) {
            ?>
                    <option value="<?php 
            echo $key;
            ?>
" <?php 
            selected($selected_group, $key);
            ?>
><?php 
            echo $group;
            ?>
</option>
                <?php 
        }
        ?>
            </select>

            <?php 
        submit_button(__('Filter'), 'button', 'filter_group', false);
        echo '</div>';
    }
<div class="erp-crm-bulk-contact-subscriber-wrap">

    <div class="row" id="erp-crm-contact-subscriber-group-checkbox">
        <?php 
erp_html_form_input(array('label' => __('Assign Group', 'wp-erp'), 'name' => 'group_id[]', 'type' => 'multicheckbox', 'id' => 'erp-crm-contact-group-id', 'class' => 'erp-crm-contact-group-class', 'options' => erp_crm_get_contact_group_dropdown()));
?>
    </div>

    <?php 
wp_nonce_field('wp-erp-crm-bulk-contact-subscriber');
?>

    <input type="hidden" name="action" value="erp-crm-bulk-contact-subscriber">
    <input type="hidden" name="user_id" value="{{ data.user_id }}">
</div>