Add location to Jetpack Carousel

Thanks for your detailed question, very helpful in looking into this.

It looks like Jetpack has removed the filter jp_carousel_add_data_to_images (confirmed here: https://github.com/Automattic/jetpack/issues/295), so until that filter is added back in I’m not sure what a good way to do this would be.

The data you’ve got above is the raw metadata from the database without any of the processing that I use to display the geo in a sensible way… It looks like it is possible to filter the metadata before it goes anywhere; there is a filter for wp_get_attachment_metadata. However, even if you processed the latitude so that it is in the right format, Jetpack removes it from the metadata because it wants to “fuzzify” it in the future, and I think the only way to get around that is to edit the jetpack file directly.

Thanks for the Reply!

I removed the “fuzzify” mechanism from the file jetpack-carousel.php. Then I’m using the following code to register the filter add_filter('wp_get_attachment_metadata','add_geo_meta_carousel',10,2);. But unfortunately that leads to an out of memory error in the PHP processor..

What I’m doing wrong? How can I re-enable this cool feature? It doesn’t matter if I have to patch files of the carousel plugin.

Yeah, so the format of what’s returned will not be exactly the same once you change what you’re filtering…

Your code will need to be more like:

function add_geo_meta_carousel($meta,$imgID) {
	$imgmeta = $meta['image_meta'];
	if (class_exists('exifography')) {
		$exif = new exifography();

		if (isset($imgmeta['latitude'])) {
			if ($imgmeta['latitude'])
				$latitude = $imgmeta['latitude'];
			if ($imgmeta['longitude'])
				$longitude = $imgmeta['longitude'];
			if ($imgmeta['latitude_ref'])
				$lat_ref = $imgmeta['latitude_ref'];
			if ($imgmeta['longitude_ref'])
				$lng_ref = $imgmeta['longitude_ref'];

			$lat = $exif->geo_single_fracs2dec($latitude);
			$lng = $exif->geo_single_fracs2dec($longitude);
			if ($lat_ref == 'S') { $neg_lat = '-'; } else { $neg_lat = ''; }
			if ($lng_ref == 'W') { $neg_lng = '-'; } else { $neg_lng = ''; }

			$imgmeta['latitude'] = $neg_lat . number_format($lat,6);
			$imgmeta['longitude'] = $neg_lng . number_format($lng, 6);

			//remove raw geo
			unset($imgmeta['latitude_ref']);
			unset($imgmeta['longitude_ref']);
		}

		$meta['image_meta'] = $imgmeta;
	}

	return $meta;
}
add_filter('wp_get_attachment_metadata','add_geo_meta_carousel',10,2);

Once I did that and commented out the fuzzify stuff I actually ended up with 2 maps, not sure why, but it’s progress. Let me know how you go.

Yeah, thank you very much Kristarella! Your new snippet works like a charm ??