Field for Organizer

Here’s some documentation on how you could create a separate field for the event organizer: https://wp-events-plugin.com/documentation/event-attributes/

Thanks, this was helpful. But how can I hide the display if the attribute has no content? I seem to be using the wrong syntax:

            {has_att}
            <div class="em-item-meta-line em-item-taxonomy em-event-att">
                <span class="em-icon-category em-icon"></span>              
                <div>Veranstalter: #_ATT{Veranstalter}</div>
            </div>
            {/has_att}

Presumably “_att” and “em-event-att” is wrong, but what should be there instead?

You can create your own conditional placeholder by adding the following code snippet:

add_filter( 'em_event_output_show_condition', 'my_em_has_organizer', 1, 4 );
// Whether to display the event format content between {has_organizer}the content{/has_organizer}
function my_em_has_organizer( $show, $condition, $full_match, $EM_Event ) {
    if ( 'has_organizer' == $condition ) {
	$organizer = get_post_meta($EM_Event->post_id, 'Veranstalter', true);
	if ( !empty( $organizer ) )) {
	    $show = true;
	}
    }
    return $show;
}

You can add this code snippet using the Code Snippets plugin.

After that your formatting would look like this:

            {has_organizer}
            <div class="em-item-meta-line em-item-taxonomy em-event-att">
                <span class="em-icon-category em-icon"></span>              
                <div>Veranstalter: #_ATT{Veranstalter}</div>
            </div>
            {/has_organizer}

Actually you don’t need to add my code snippet. See the following documentation: https://wp-events-plugin.com/documentation/conditional-placeholders/#general

You can use the following:

            {has_att_Veranstalter}
            <div class="em-item-meta-line em-item-taxonomy em-event-att">
                <span class="em-icon-category em-icon"></span>              
                <div>Veranstalter: #_ATT{Veranstalter}</div>
            </div>
            {/has_att_Veranstalter}

Thank you very much, that was helpful.
So the extension “_Veranstalter” was missing. Now it works.

One more quick question:
Where is there an overview of the available icons (e.g. “em-icon-category”, “em-icon-clock”, …)

I didn’t find a list of the available icons in the documentation but there is a css file that gives an oversight, see: /wp-content/plugins/events-manager/includes/css/events-manager.css.
If you download this file you can find a kind of list.

Beware: Don’t overwrite the original file in this directory, that might break your installation.

Here’s the list of icons I got from events-manager.css:

em-icon-at
em-icon-attendees
em-icon-calendar
em-icon-calendar-empty
em-icon-category
em-icon-checkmark
em-icon-checkmark-circle
em-icon-chevron-down
em-icon-chevron-up
em-icon-clock
em-icon-close
em-icon-collapse
em-icon-compass
em-icon-cross-circle
em-icon-download
em-icon-edit
em-icon.em-icon-cross-circle
em-icon.em-icon-trash
em-icon.em-icon-updated
em-icon-enter
em-icon-exit
em-icon-expand
em-icon-filter
em-icon-filter-hide
em-icon-first-circle
em-icon-folder
em-icon-info
em-icon-last-circle
em-icon-list
em-icon-list-grid
em-icon-list-grouped
em-icon-location
em-icon-location-off
em-icon-location-on
em-icon-logo-apple
em-icon-logo-google-calendar
em-icon-logo-office365
em-icon-logo-outlook
em-icon-magnifying-glass
em-icon-map
em-icon-minus
em-icon-multiple
em-icon-next-circle
em-icon-options-v
em-icon-phone
em-icon-plus
em-icon-point-down
em-icon-prev-circle
em-icon-settings
em-icon-sort-asc
em-icon-sort-desc
em-icon-spinner
em-icon-tag
em-icon-ticket
em-icon-tickets
em-icon-trash
em-icon-undo
em-icon-updated
em-icon-warning