No lightbox caption displaying

I understand this – I made my own test blog with the Twenty Twelve theme to confirm that it does work. However, I’m also extra super sure that all plugins were disabled and the Twenty Twelve theme active on this particular website, and it still wasn’t working, which is why I’m so confused.

I changed the settings back just now, see the homepage: http://poptb.com The single image has the title set under the advanced tab, while the gallery thumbnails have it set as the regular title.

Here’s my test site where everything’s working correctly: http://mjaustin.com/test/gallery/ I don’t actually see any captions on your random blog images, are the titles just not set?

Could one of the plugins still be conflicting even though it’s disabled?

Ah, got it! PopTB is using 3.7 – I upgraded my test blog from 3.61 to 3.7 and the captions went away. See here: http://mjaustin.com/test/gallery/ (WP version is the only thing I changed.) Can you confirm this with yours?

I’m not sure if you’re saying that I should be running 3.8 trunk too, that 3.7 isn’t the problem, or that you just can’t be bothered to test 3.7 and confirm one way or the other, but these are my findings from experimenting on multiple installations of different versions of WordPress, from 3.3 to 3.6-ish.

In all cases a single image inserted into a post did not use the title field for the caption at all, it *only* responded to the Advanced Link Settings title field. In all cases, the images DID use the regular title field as the caption when they were part of a gallery. In all cases, when the blog was upgraded to 3.7 using the auto-update feature, the gallery images no longer used the title field as a caption and the single images continued to use the Advanced Link Settings title as a caption.

This is demonstrated on my test blog, which prior to upgrading the WP version was used as a demonstration of correct Simple Colorbox caption functionality. This proves that there are no other potential conflicts on this particular blog, which was created only a few days ago and has no customizations of any kind. I’ve demonstrated both working and nonworking caption settings on single images here: http://mjaustin.com/test/gallery/

Thoughts?

A solution for restoring the title attribute to gallery images:

//Add title attribute back to gallery images
function my_image_titles($atts,$img) {
	$atts['title'] = trim(strip_tags( $img->post_title ));
	return $atts;
}
add_filter('wp_get_attachment_image_attributes','my_image_titles',10,2);

From here: http://wordpress.org/support/topic/restoring-titles-to-inserted-images-in-wordpress-35?replies=12

And, a hackish solution based on the above for restoring the title attribute to the links that wrap the gallery images, which are apparently what Simple Colorbox uses to derive captions:

//Add title attribute back to gallery image links
function my_get_attachment_link_filter( $content,$id ) {
        $title = get_the_title($id);
        $new_content = str_replace("<a ", "<a title=\"$title\" ", $content);
        return $new_content;
}
add_filter('wp_get_attachment_link', 'my_get_attachment_link_filter', 10, 4);

Based on this and this and thisish.

Ahhh, captions are glorious.

Cool, thanks! I’ll take your word for it that it’s a superior solution.