Automatically append caption HTML to featured image HTML?

[cconover]

Look into the option for the plugin to modify the function that renders the featured image in a theme to append the featured image caption HTML to the featured image HTML. This would remove the need to modify theme code, and make installation and usage simpler for non-technical users.

[avluis]

I know that if I needed to add any features to my theme, I would need to use child themes and modify the functions.php file. From there I can filter output and do whatever I needed.

But after installing a plugin that lets me add actions and filters to my WP install, then I don't even need a child theme. I just added my functions there.

I learned all this when I was investigation hAtom feeds, here are those functions I needed to add:

//mod content
function hatom_mod_post_content ($content) {
  if ( in_the_loop() && !is_page() ) {
    $content = '<span class="entry-content">'.$content.'</span>';
  }
  return $content;
}
add_filter( 'the_content', 'hatom_mod_post_content');

//add hatom data
function add_mod_hatom_data($content) {
    $t = get_the_modified_time('F jS, Y');
    $author = get_the_author();
    $title = get_the_title();
    if ( is_single() || is_page()) {
        $content .= '<div class="hatom-extra" style="display:none;visibility:hidden;"><span class="entry-title">'.$title.'</span> was last modified: <span class="updated">'.$t.'</span> by <span class="author vcard"><span class="fn">'.$author.'</span></span></div>';
    }
    return $content;
    }
add_filter('the_content', 'add_mod_hatom_data');

I hope this helps somewhat. I'm thinking something similar will need to be done - have your plugin interact with WP theme functions.

I looked at the files of that plugin, and it is quite big on JavaScript. Plugins name is Add Actions and Filters.

[cconover]

Yeah, that was my thought. I need to look into all possible functions that can be used to render the featured image in a theme, and filter them to append the HTML for the caption.

[avluis]

Just tried out your update, pretty nice to see it working. I do have one more request (this may need its own issue opened). Take a look at how my theme display the featured image on my website. This applies to any other pages with a featured image. See where I have the featured image caption (towards the bottom of the page).

I use a plugin to create a shortcode with the following:

echo "<p><i>Featured Image Credit: </i></p>"; cc_featured_image_caption();

I then insert the shortcode [featuredImageCaption] at the end of my posts and get the results you see.

Any way to have this functionality built-in since the groundwork is in place (from what I have seen of the current build) to have an additional shortcode for those that want to have the featured image caption separate from the image?

[cconover]

It's funny you mention that, I was literally just thinking about 20 minutes ago of adding a shortcode.

Yeah, go ahead and open a new issue on it so it can be tracked separately.

[avluis]

Awesome! I will go ahead and open the issue with as much detail as I can.