Wojtek Batyra

It’s hard to guess, but I think the best way would be looking for other values and see how they are displayed and just change variable to display your additional filed.

I dont know that exactly do you want to put in dropdown menu. I added input type=”text”, but it would be similar, just need to change input type and display options.

This is how to storage data:

You need to add new field in db, in ‘wp_ai1ec_events’ table, in my case it was ‘website’.

To add new field to class edit:
all-in-one-event-calendar/app/model/class-ai1ec-event.php (line 164) add:

/**
	 *
	 * website class variable
	 *
	  @var string
		**/
	var $website;

find (line 295):

// =============================
			// = Fetch event from database =
			// =============================
			$query = $wpdb->prepare(
				"SELECT e.post_id, UNIX_TIMESTAMP( e.start ) as start, UNIX_TIMESTAMP( e.end ) as end, e.allday, e.recurrence_rules, e.exception_rules,
					e.recurrence_dates, e.exception_dates, e.venue, e.country, e.address, e.city, e.province, e.postal_code,
					e.show_map, e.contact_name, e.contact_phone, e.contact_email, e.cost, e.ical_feed_url, e.ical_source_url,
					e.ical_organizer, e.ical_contact, e.ical_uid, e.website, " .
					"GROUP_CONCAT( ttc.term_id ) AS categories, " .
					"GROUP_CONCAT( ttt.term_id ) AS tags " .

and add e.website, to sql query.
(line 618) add:

// =========================
			// =  Get website address  =
			// =========================
			case 'website':
				return $website = $this->website;

(line 671) add:
'website' => $this->website,
(line 697) add:
'%s'

Edit all-in-one-event-calendar/app/helper/class-ai1ev-calendar-helper.php (line 215) and add in the end of query:
, e.website
(line 319) add to query:
, e.website

Edit all-in-one-event-calendar/app/helper/class-ai1ec-events-helper.php (line 579) and add in the end of sql query:
, e.website

Edit all-in-one-event-calendar/app/controller/class-ai1ec-app-controller.php (line 255) add:
website varchar(255),

Edit all-in-one-event-calendar/app/controller/class-ai1ec-events-controller.php (line 204) add:
$website = $event->website;
(line 269) add:
'website' => $website,
(line 337) add:
$website = isset( $_POST['ai1ec_website'] ) ? stripslashes( $_POST['ai1ec_website'] ) : '';
(line 456) add:
$event->website = $website;
(line 630) add:
'website' => $event->website

To display input field you need to edit correct file to display it in correct place. I added my field in ‘Organizer contact info’, so i edit app-in-one-event-calendar/app/view/box_event_contact.php (line 34):

<tr>
			<td>
				<label for="ai1ec_website">
					<?php _e( 'Website:', AI1EC_PLUGIN_NAME ); ?>
				</label>
			</td>
			<td>
				<input type="text" name="ai1ec_website" id="ai1ec_website" value="<?php echo $website; ?>" />
			</td>
		</tr>

To display it on website, edit all-in-one-event-calendar/app/view/event-single.php (line 38):

<tr>
			<?php if( $website ): ?>
				<th scope="row" class="ai1ec-website"><?php _e( 'Website:', AI1EC_PLUGIN_NAME ) ?></th>
				<td class="ai1ec-website"><a href="<?php
					$url='';
					$tmp=explode("/",$website);
					if ($tmp[0]=='http:' || $tmp[0]=='https:')
						$url .= $website;
					else
						$url .= 'http://'.$website;

					echo $url;
				?>" target="_blank"><?php echo $website ?></a></td>
			<?php endif ?>
		</tr>

my v. plugin is 1.0.9