scribu

Custom fields are great for storing various meta data about a post. However, if you routinely need to display posts that have a certain custom field value, you should consider switching to a <a href="https://codex.wordpress.org/Custom_Taxonomies" rel="nofollow ugc">custom taxonomy</a>, which is better suited for grouping posts.
With this simple plugin, you can convert all custom fields with a certain key to terms in a certain taxonomy, while maintaining the post association.
Note: If you’re looking for the old version, see <a href="https://wordpress.org/extend/plugins/custom-query-fields/" rel="ugc">Custom Query Fields</a>
Links: <a href="http://scribu.net/wordpress/custom-field-taxonomies" rel="nofollow ugc">Plugin News</a> | <a href="http://scribu.net" rel="nofollow ugc">Author’s Site</a>

Custom Field Taxonomies

Convert custom fields to tags, categories or taxonomy terms

JS Morisset

The JSM Show Post Metadata plugin displays post (ie. posts, pages, and custom post types) meta keys (aka custom field names) and unserialized values in a metabox at the bottom of the post editing page.
Note that if you’re using WooCommerce HPOS (High-Performance Order Storage), available since WooCommerce v8.2, then your WooCommerce orders are NOT post objects and you should use the <a href="https://wordpress.org/plugins/jsm-show-order-meta/" rel="ugc">JSM Show Order Metadata</a> plugin instead.
There are no plugin settings – simply install and activate the plugin.
<h4>Available Filters for Developers</h4>
Filter the post meta shown in the metabox:
<pre><code>'jsmspm_metabox_table_metadata' ( array $metadata, $post_obj )
</code></pre>
Array of regular expressions to exclude meta keys:
<pre><code>'jsmspm_metabox_table_exclude_keys' ( array $exclude_keys, $post_obj )
</code></pre>
Capability required to show post meta:
<pre><code>'jsmspm_show_metabox_capability' ( 'manage_options', $post_obj )
</code></pre>
Show post meta for a post type (defaults to true):
<pre><code>'jsmspm_show_metabox_post_type' ( true, $post_type )
</code></pre>
Capability required to delete post meta:
<pre><code>'jsmspm_delete_meta_capability' ( 'manage_options', $post_obj )
</code></pre>
Icon for the delete post meta button:
<pre><code>'jsmspm_delete_meta_icon_class' ( 'dashicons dashicons-table-row-delete' )
</code></pre>
<h4>Related Plugins</h4>
<ul>
<li><a href="https://wordpress.org/plugins/jsm-show-comment-meta/" rel="ugc">JSM Show Comment Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-order-meta/" rel="ugc">JSM Show Order Metadata for WooCommerce HPOS</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-post-meta/" rel="ugc">JSM Show Post Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-term-meta/" rel="ugc">JSM Show Term Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-user-meta/" rel="ugc">JSM Show User Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-registered-shortcodes/" rel="ugc">JSM Show Registered Shortcodes</a></li>
</ul>

JSM Show Post Metadata

I've started recently to use this plugin to discover post meta values, I must say it's cleaner than other plugins I've used before.

Thanks for the latest update release 2.0.0, the ability to have post meta updated without having to load the page is pretty awesome.

I use the plugin almost everyday. I recommend it to anyone who wants to see what's in post meta.

Keep it up!

Useful and Very Clean Post Meta Viewer Plugin

It's great for letting me see hidden metadata without having to open up the database.  Plus, it's great for allowing non-technical users to see the information without the risk of sending them to the database.  

Super helpful tool!


I'm definitely not making full use of its potential but, for what I need it, it has proved to be dependable and very useful.



Thank you for sharing your work.


Helpful and dependable

Show post metadata (aka custom fields) in a metabox when editing posts / pages - a great tool for debugging issues with post metadata.

Custom Field Taxonomies vs JSM Show Post Metadata