Add class to activity

Within the function ajax_update_activity_contents in class_bpfb_binder.php there is already some logic I can use to detect image, video or link. I have added a custom variable here containing the class I want to use.

		if (!empty($_POST['data'])) {
			if (!empty($_POST['data']['bpfb_video_url'])) {
				$bpfb_code = $codec->create_video_tag($_POST['data']['bpfb_video_url']);
				
				// added by matt 26/04/2017
				$customClass = "activityplus_video";
			}
			if (!empty($_POST['data']['bpfb_link_url'])) {
				$bpfb_code = $codec->create_link_tag(
					$_POST['data']['bpfb_link_url'],
					$_POST['data']['bpfb_link_title'],
					$_POST['data']['bpfb_link_body'],
					$_POST['data']['bpfb_link_image']
				);
				
				// added by matt 26/04/2017
				$customClass = "activityplus_link";
			}
			if (!empty($_POST['data']['bpfb_photos'])) {
				$images = $this->move_images($_POST['data']['bpfb_photos']);
				$bpfb_code = $codec->create_images_tag($images);
				
				// added by matt 26/04/2017
				$customClass = "activityplus_images";
			}
		}

Further down there is a code block where the activity/entry.php template is loaded and processed:

		if ($aid) {
			ob_start();
			if ( bp_has_activities ( 'include=' . $aid ) ) {
				while ( bp_activities() ) {
					bp_the_activity();
					if (function_exists('bp_locate_template')) bp_locate_template( array( 'activity/entry.php' ), true );
					else locate_template( array( 'activity/entry.php' ), true );
				}
			}
			$activity = ob_get_clean();
			
			// added by matt 26/04/2017
			$activity = str_replace("class=\"activity activity_update", "class=\"activity ".$customClass." activity_update", $activity);
		}

I’ve used a simple string replace to add in my custom class and this works for now.

Obviously this is not ideal as I have modified the core plugin files. I would be interested to know if there is a more elegant solution.

Turns out my method doesn’t work, it only works when the activity is first posted and injected into the feed. If you then refresh the feed page my custom classes aren’t there anymore… ??

The addition of the code below worked and means I can remove the ugly string_replace and pull in the meta value within my activity/entry.php

		if ($bpfb_code) {
			$content = !empty($_POST['content']) ? $_POST['content'] : '';
			$content .= "\n{$bpfb_code}";
			$content = apply_filters('bp_activity_post_update_content', $content);
			$aid = $gid ?
				groups_post_update(array('content' => $content, 'group_id' => $gid))
				:
				bp_activity_post_update(array('content' => $content))
			;
			global $blog_id;
			bp_activity_update_meta($aid, 'bpfb_blog_id', $blog_id);
			
			// added by matt 26/04/2017
			bp_activity_add_meta($aid, 'customClass', $customClass);
			
		}

Hello @magland,

Thank you for sharing this solution with us. Let me check with developer if it is possible to do that outside the plugin core files.

kind regards,
Kasia