Enables WordPress to include thumbnail and custom field data in its RSS2 feed.
How is works:
- To retrieve post thumbnails: Add 「post_thumbnail=1」 to your feed』s link. (e.g. 「http://www.mywpsite/feed/?post_thumb=1」)
- To retrieve custom fields: Add 「meta_keys=meta_name1[,meta_name2,meta_name3,…]」 to your feed』s link (e.g. 「http://www.mywpsite/feed/?meta_keys=post_quote,post_contributor」 will retrieve the 「post_quote」 and 「post_contributor」 custom fields』 value, if these fields have been added to the post.)
- To further customize your feed: use any other WP Feed options, as listed on https://codex.wordpress.org/WordPress_Feeds/.
Example:
The http://news.cals.wisc.edu/feed/?cat=67&post_thumb=1&meta_keys=academic_info will retrieve all posts in category 67, along with their thumbnails (if available) and the value of the 『academic_info』 field (if available).
