WordPress at Your Fingertips
function is not described

WP_List_Table::get_default_primary_column_name() protected WP 4.3.0

Gets the name of the default primary column.

{} It's a method of the class: WP_List_Table{}

No Hooks.

Return

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

Usage

// protected - for code of main (parent) or child class
$result = $this->get_default_primary_column_name();

Changelog

Since 4.3.0 Introduced.

Code of WP_List_Table::get_default_primary_column_name() WP 5.8.2

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;
}