Hi Vincent,

Currently, it is not supported to export third-party columns. We’re trying to come up with a solution for this, but it is not that easy because of the way columns are registered in WordPress.

But I believe there is a workaround for you. Most plugins use custom meta data to store their data. So if the start and end date from the EventON plugin are stored as metadata, you could try to remove their default columns and re-add them by using our custom field columns. When you use one of our columns, export will work.

In that case, you can use our filter to alter the export value for the specific columns.

/**
 * @param string $value
 * @param AC_Column $column
 * @param int $post_id
 */
function acp_export_value_custom_date( $value, $column, $post_id ){
	// Check for specific column type
	if( 'the_custom_column_type' === $column->get_type() ){
		$value = 'Your own value';
	}

	return $value;
}
add_filter( 'ac/export/value', 'acp_export_value_custom_date', 10, 3 );

The type returned by get_type() should be the column type the EventON is using, something like start_date. I suspect they have an API or function to get the start and end date for each event. Could you try this out and let me know if it works?

Hi Vincent,

The snippet I gave you is a filter that allows you to change the export value just before it is written to the CSV.
You can paste the snippet in your function.php but you indeed have to change the following values in your code:

the_custom_columns_type should indeed something be like start_date, but I don’t know that for sure.

Your own value is also something you have to set yourself by using the API of EventON. I did have a quick look on their documentation section but I could not find any API methods to help you with this. You’ll have to find out how you can get the start date and end date by using code before you can use this snippet.