Plinth Custom Fields

Description

Plinth Custom Fields lets you build custom field groups and attach them to post types, page templates, specific pages, or post statuses — without depending on any other plugin.

Key features:

  • 12 field types: Text, Textarea, Number, Email, URL, Image, Select, Radio, Checkbox, True/False, WYSIWYG Editor, and Repeater
  • Repeater fields with drag-to-reorder rows and nested sub-fields
  • Location rules with AND/OR logic — show fields only where you need them
  • Import and export field groups as JSON, so you can move configurations between sites
  • Template functions for theme developers: plinth_get_field(), plinth_the_field(), plinth_get_image(), plinth_get_rows(), plinth_have_rows(), plinth_the_row(), plinth_get_sub_field(), plinth_the_sub_field()
  • All data stored in standard wp_postmeta, prefixed with _plinth_ so it never collides with other plugins
  • Zero external dependencies — works entirely on top of WordPress core

For Theme Developers

Once a field group is created and assigned to a location, pull the values into any template file:

<?php
$title = plinth_get_field( 'hero_title' );
$image = plinth_get_image( 'hero_image', null, 'large' );

if ( plinth_have_rows( 'team_members' ) ) :
    while ( plinth_rows_remaining() ) : plinth_the_row(); ?>
        <h3><?php plinth_the_sub_field( 'name' ); ?></h3>
    <?php endwhile;
endif;
?>

Screenshots

Installation

  1. Upload the plinth-custom-fields folder to the /wp-content/plugins/ directory, or install directly through the WordPress Plugins screen.
  2. Activate the plugin through the ‘Plugins’ screen in WordPress.
  3. Go to Plinth Custom Fields Add New to create your first field group.
  4. Set Location Rules to choose where the field group should appear.
  5. Edit a matching post or page to see your custom fields in a meta box.

FAQ

Does this require any other plugin?

No. Plinth Custom Fields is fully self-contained and has zero dependencies on any other plugin.

Can I move field groups between sites?

Yes. Go to Plinth Custom Fields Import / Export to export a JSON file of your field groups, then import that same file on another site.

How do repeater fields store their data?

Repeater rows are stored as individual wp_postmeta rows (a row-count meta key plus one meta key per cell), which keeps the data simple to query directly from the database if needed.

Will this conflict with my theme’s existing custom fields?

All meta keys are prefixed with _plinth_ and the leading underscore keeps them out of WordPress’s native Custom Fields panel, minimizing collision risk with other plugins or theme code.

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Contributors & Developers

“Plinth Custom Fields” is open source software. The following people have contributed to this plugin.

Contributors

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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

1.0.0

  • Initial release.
  • 12 field types including Repeater with drag-sort and nested sub-fields.
  • Location rules engine with AND/OR logic.
  • JSON import/export for field groups.
  • Template functions for theme developers.