I created custom post types with the plugin WP Types. It also allows me to create custom fields for the elements… so I used it to create an image field where the user can select a logo to upload.
I'm using the Carousel plugin with a custom post type as the source: Wonderful! I didn’t know it was possible and thought I would need to use a shortcode (for WP Views)…
The only problem is: for the image source, the default is
%featured_image%... I would like to change that to my logo field (called logo), but
%logo% doesn’t work… Can we use a custom field, and how?
(The answer was provided by the customer).
I think I found it! By enabling WP's custom fields, I realised that WP Types adds the prefix
wpcf- (for WordPress Custom Fields) before the field’s name… So, using
%wpcf-logo% works now!