Title: Fatal error: Uncaught Error: Class 'Complex_Field' not found Last modified: August 31, 2016 --- # Fatal error: Uncaught Error: Class 'Complex_Field' not found * Resolved [Taiko Media](https://wordpress.org/support/users/taiko-media/) * (@taiko-media) * [10 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-complex_field-not-found/) * Hi, * following the [Setup Methods example](http://carbonfields.net/docs/setup-methods/), I receive this error: * ``` ( ! ) Fatal error: Uncaught Error: Class 'Complex_Field' not found in /srv/www/mysite.dev/current/web/app/plugins/laniakea-page-builder/carbonfields/post-meta.php on line 17 ( ! ) Error: Class 'Complex_Field' not found in /srv/www/mysite.dev/current/web/app/plugins/laniakea-page-builder/carbonfields/post-meta.php on line 17 Call Stack # Time Memory Function Location 1 0.0005 414840 {main}( ) .../post.php:0 2 0.0011 458000 require_once( '/srv/www/mysite.dev/current/web/wp/wp-admin/admin.php' ) .../post.php:12 3 0.0014 470640 require_once( '/srv/www/mysite.dev/current/web/wp/wp-load.php' ) .../admin.php:31 4 0.0019 472792 require_once( '/srv/www/mysite.dev/current/web/wp-config.php' ) .../wp-load.php:42 5 0.0068 665224 require_once( '/srv/www/mysite.dev/current/web/wp/wp-settings.php' ) .../wp-config.php:9 6 0.2834 21304152 do_action( ) .../wp-settings.php:413 7 0.2835 21304600 Carbon_Fields\Helper\Helper->trigger_fields_register( ) .../plugin.php:525 8 0.2835 21304600 do_action( ) .../Helper.php:51 9 0.2835 21305640 crb_register_custom_fields( ) .../plugin.php:525 10 0.2846 21310672 include_once( '/srv/www/mysite.dev/current/web/app/plugins/laniakea-page-builder/carbonfields/post-meta.php' ) .../laniakea.php:15 ``` * Could this be related to my [previous](https://wordpress.org/support/topic/container-displays-no-fields-in-backend?replies=6) problem? This is my post-meta.php code: * ``` 'Employees', 'singular_name' => 'Employee', ); Container::make('post_meta', 'Custom Data') ->show_on_post_type('page') ->add_fields(array( Field::make('complex', 'crb_employee_data') ->setup_labels($employees_labels) ->set_layout(Complex_Field::LAYOUT_TABLE) ->add_fields(array( Field::make('text', 'name')->help_text('Name of employee'), Field::make('text', 'position')->help_text('Position title'), Field::make('image', 'image'), Field::make('rich_text', 'description'), )) )); ``` * [https://wordpress.org/plugins/carbon-fields/](https://wordpress.org/plugins/carbon-fields/) Viewing 5 replies - 1 through 5 (of 5 total) * Plugin Author [htmlBurger](https://wordpress.org/support/users/htmlburger/) * (@htmlburger) * [10 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-complex_field-not-found/#post-7076176) * Hey, * It appears that this was a mistake in our documentation. * We’ve now updated this example in the documentation – it was missing a `use Carbon_Fields\ Field\Complex_Field;` statement. * Also, please note that the `set_layout()` method is deprecated, so we’ve removed it from the example as well. * Feel free to have a look at the latest code in the example. * Thread Starter [Taiko Media](https://wordpress.org/support/users/taiko-media/) * (@taiko-media) * [10 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-complex_field-not-found/#post-7076205) * Thanks! * Is there a way to set the contents of a group to either a row or a column display? Or would this be best achieved assigning custom field classes and writing a little CSS for the WP admin area? * I’ve got to say I really love the Carbon Fields so far, a hidden gem! With a little polishing in the docs and more example codes, I’m convinced this plugin will become huge 🙂 * Cheers, Richard * Plugin Author [htmlBurger](https://wordpress.org/support/users/htmlburger/) * (@htmlburger) * [10 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-complex_field-not-found/#post-7076209) * Hey again, * Yes, you can set the contents of a group to be displayed either in rows or columns. * Basically, the default layout of complex field groups is in columns, each field taking 100% width, and each next field positioned below the previous one. * But if you wish, you can position some of the fields of a group (or all of them) in a row. This can be achieved by using the `set_width()` method of each field. With this method you specify a percentage of the entire width that you wish this field to take. * For example, calling `set_width(33)` to all 3 fields in a group would position all three fields on one line. This gives you the option to position the fields in your groups as you wish – some of them can be on rows, taking 33% or 50% of the width, and some of them can be full width. * You can read more about this in the Fields -> Usage documentation article: [http://carbonfields.net/docs/fields-usage/](http://carbonfields.net/docs/fields-usage/) * And we’re really glad you like the plugin 🙂 * Thread Starter [Taiko Media](https://wordpress.org/support/users/taiko-media/) * (@taiko-media) * [10 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-complex_field-not-found/#post-7076210) * Yes, I’m aware of the set_width method. I was actually hoping for a way to enable** automatic equal width columns** for a particular (nested) group/complex field. So that when a user adds 2 entries, each column becomes 50% wide, or 33% when he adds 3 entries and so on. This feature will be great for creating a complex page builder with lots of nested complex fields (for the html markup of sections >rows>columns>content blocks etc.), yet maintaining a compact and sensible UI for the end user. * Plugin Author [htmlBurger](https://wordpress.org/support/users/htmlburger/) * (@htmlburger) * [10 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-complex_field-not-found/#post-7076211) * Thanks for the idea. * This is a feature that we will probably consider implementing in a future version. Viewing 5 replies - 1 through 5 (of 5 total) The topic ‘Fatal error: Uncaught Error: Class 'Complex_Field' not found’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/carbon-fields_cacbcc.svg) * [Carbon Fields](https://wordpress.org/plugins/carbon-fields/) * [Frequently Asked Questions](https://wordpress.org/plugins/carbon-fields/#faq) * [Support Threads](https://wordpress.org/support/plugin/carbon-fields/) * [Active Topics](https://wordpress.org/support/plugin/carbon-fields/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/carbon-fields/unresolved/) * [Reviews](https://wordpress.org/support/plugin/carbon-fields/reviews/) * 5 replies * 2 participants * Last reply from: [htmlBurger](https://wordpress.org/support/users/htmlburger/) * Last activity: [10 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-complex_field-not-found/#post-7076211) * Status: resolved