Learn to build professional admin pages using the WordPress Settings API. We cover registering settings, creating sections, and adding fields for your plugin.
Previously in this course, we explored The Model Layer for Data to abstract our database interactions. Now that we have a solid foundation for managing content, it’s time to allow users to customize how our Knowledge Base plugin behaves.
The Settings API is the standard, secure way to manage plugin configuration in the WordPress dashboard. While you could manually build forms and handle $_POST data, the Settings API abstracts the heavy lifting—including security nonces, data sanitization hooks, and database persistence.
Using the Settings API ensures your plugin remains consistent with the WordPress ecosystem. When you use register_setting, add_settings_section, and add_settings_field, you aren't just creating a form; you are tapping into a centralized system that handles the storage of your options in the wp_options table.
If you are interested in how the underlying storage works, you can read more about the WordPress Options API: Understanding Autoloading and Performance to see how these settings impact your database.
To build a professional dashboard page, you must orchestrate three distinct steps within your AdminController:
wp_options) your settings belong to.Let's add a "General Settings" tab to our Knowledge Base plugin where an admin can toggle a "Display Author" feature.
In your AdminController.php, implement a method to initialize these settings:
PHPclass AdminController { public function init_settings() { #6A9955">// 1. Register the setting group register_setting('kb_plugin_options', 'kb_settings'); #6A9955">// 2. Add a section add_settings_section( 'kb_main_section', 'Knowledge Base Configuration', null, #6A9955">// Optional callback for section description 'kb_plugin_page' #6A9955">// The menu slug ); #6A9955">// 3. Add a field add_settings_field( 'kb_display_author', 'Display Author Name', [$this, 'render_author_field'], 'kb_plugin_page', 'kb_main_section' ); } public function render_author_field() { $options = get_option('kb_settings'); $value = isset($options['display_author']) ? $options['display_author'] : 0; echo '<input type="checkbox" name="kb_settings[display_author]" value="1" ' . checked(1, $value, false) . ' />'; } }
Finally, in your admin page template, use the built-in WordPress functions to render the form:
PHP<form action="options.php" method="post"> <?php settings_fields('kb_plugin_options'); do_settings_sections('kb_plugin_page'); submit_button(); ?> </form>
AdminController class.register_custom_settings and hook it into the admin_init action.kb_settings array.wp_options table after you hit "Save Changes" on your admin page.settings_fields: If you don't call settings_fields('your_group_name') inside your <form> tag, the hidden security nonces and the option_page field won't be rendered. Your form submission will trigger a "Cheatin’ uh?" error.add_settings_section must match the page slug used in do_settings_sections in your template. If they don't match, your fields will simply vanish from the UI.get_option to retrieve your settings. Never access the database directly for these values, as the Settings API handles the serialization of your arrays automatically.The Settings API is your primary tool for configuration. By registering settings, defining sections, and adding fields, you provide a consistent, secure interface for your plugin users. You’ve now moved from hard-coding values to creating a dynamic, user-configurable plugin.
Up next: We will explore how to secure this data by implementing sanitization callbacks to ensure only valid data reaches your database.
Master WordPress security by implementing capability checks. Learn to use current_user_can to restrict admin features and enforce proper access control.
The Settings API
Plugin Security Best Practices
Composer for Dependencies
Theme Integration Hooks
Managing Assets with Gulp/Webpack
Documentation Standards
Plugin Deployment Strategy
Advanced MVC: Dependency Injection
Handling Large Datasets
Error Handling and Logging