Gets a list of sortable columns.

Description

The format is:

• 'internal-name' => 'orderby'
• 'internal-name' => array( 'orderby', bool, 'abbr', 'orderby-text', 'initially-sorted-column-order' ) –
• 'internal-name' => array( 'orderby', 'asc' ) – The second element sets the initial sorting order.
• 'internal-name' => array( 'orderby', true ) – The second element makes the initial order descending.

In the second format, passing true as second parameter will make the initial sorting order be descending. Following parameters add a short column name to be used as ‘abbr’ attribute, a translatable string for the current sorting, and the initial order for the initial sorted column, ‘asc’ or ‘desc’ (default: false).

Return

More Information

This method should be overridden to return an associative array of columns that you want to make sortable. The associative array should follow the format 'column_slug'=>array('sortby',true), where the second property states whether the field is presorted. This is frequently used to provide part of the _column_headers property.

Source

protected function get_sortable_columns() {
	return array();
}

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Changelog