WP_List_Table::get_default_primary_column_name() WordPress Method

The WP_List_Table::get_default_primary_column_name() method is used to get the default primary column name for a list table.

WP_List_Table::get_default_primary_column_name() #

Gets the name of the default primary column.

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(string) Name of the default primary column, in this case, an empty string.

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Source

File: wp-admin/includes/class-wp-list-table.php

protected function get_default_primary_column_name() {
    $columns = $this->get_columns();
    $column  = '';
 
    if ( empty( $columns ) ) {
        return $column;
    }
 
    // We need a primary defined so responsive views show something,
    // so let's fall back to the first non-checkbox column.
    foreach ( $columns as $col => $column_name ) {
        if ( 'cb' === $col ) {
            continue;
        }
 
        $column = $col;
        break;
    }
 
    return $column;
}