adding options to wp settings api

class-developer-branding-admin.php

<?php
/* Nate field is not saving a value. Or possible updating the value? Any ideas?
/**
 * The admin-specific functionality of the plugin.
 *
 * @link       http://waynebrett.com
 * @since      1.0.0
 *
 * @package    Developer_Branding
 * @subpackage Developer_Branding/admin
 */

/**
 * The admin-specific functionality of the plugin.
 *
 * Defines the plugin name, version, and two examples hooks for how to
 * enqueue the admin-specific stylesheet and JavaScript.
 *
 * @package    Developer_Branding
 * @subpackage Developer_Branding/admin
 * @author     Wayne Brett <waynebrett@waynebrett.com>
 */
class Developer_Branding_Admin {

	/**
	 * The ID of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $plugin_name    The ID of this plugin.
	 */
	private $plugin_name;

	/**
	 * The version of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $version    The current version of this plugin.
	 */
	private $version;

	/**
	 * Initialize the class and set its properties.
	 *
	 * @since    1.0.0
	 * @param      string    $plugin_name       The name of this plugin.
	 * @param      string    $version    The version of this plugin.
	 */
	 /**
	 * The options name to be used in this plugin
	 *
	 * @since  	1.0.0
	 * @access 	private
	 * @var  	string 		$option_name 	Option name of this plugin
	 */
	private $option_name = 'developer_branding';

	public function __construct( $plugin_name, $version ) {

		$this->plugin_name = $plugin_name;
		$this->version = $version;
	}

	/**
	 * Register the stylesheets for the admin area.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_styles() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in Developer_Branding_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The Developer_Branding_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */

		wp_enqueue_style( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'css/developer-branding-admin.css', array(), $this->version, 'all' );

	}

	/**
	 * Register the JavaScript for the admin area.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_scripts() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in Developer_Branding_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The Developer_Branding_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */

		wp_enqueue_script( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'js/developer-branding-admin.js', array( 'jquery' ), $this->version, false );

	}
	/**
		 * Add an options page under the Settings submenu
		 *
		 * @since  1.0.0
		 */
		public function add_options_page() {

			$this->plugin_screen_hook_suffix = add_options_page(
				__( 'Developer Branding', 'developer_branding' ),
				__( 'Developer Branding', 'developer_branding' ),
				'manage_options',
				$this->plugin_name,
				array( $this, 'display_options_page' )
			);


		}
		/**
	 * Render the options page for plugin
	 *
	 * @since  1.0.0
	 */
	public function display_options_page() {
		include_once 'partials/developer-branding-admin-display.php';
	}
	/**
	 * Register all related settings of this plugin
	 *
	 * @since  1.0.0
	 */
	public function register_setting() {
		// Add a General section
	add_settings_section(
		$this->option_name . '_general',
		__( 'General Options', 'developer-branding' ),
		array( $this, $this->option_name . '_general_cb' ),
		$this->plugin_name
	);
	add_settings_field(
			$this->option_name . '_remove_edit',
			__( 'Remove the Theme editor option', 'developer-branding' ),
			array( $this, $this->option_name . '_remove_edit_cb' ),
			$this->plugin_name,
			$this->option_name . '_general',
			array( 'label_for' => $this->option_name . '_remove_edit' )
		);
		register_setting( $this->plugin_name, $this->option_name . '_remove_edit', array( $this, $this->option_name . '_validate_options' ) );
}

/**
	 * Render the text for the general section
	 *
	 * @since  1.0.0
	 */
	public function developer_branding_general_cb() {
		echo '<p>' . __( 'Please change the settings accordingly.', 'developer-branding' ) . '</p>';
	}
//Check here for solution
	public function developer_branding_remove_edit_cb() {
		$remove_edit 	= get_option( $this->option_name . '_remove_edit' );

				?>


				<input type="checkbox" name="<?php echo $this->option_name . '_remove_edit' ?>" id="<?php echo $this->option_name . '_remove_edit' ?>" value="before" <?php checked( $remove_edit, 1 ); ?> >
				<?php
			} 

//Need a valid sanitization for checkbox
public function developer_branding_validate_options( $remove_edit ) {
	if ( in_array( $remove_edit, array( 'before', 'after' ), true ) ) {
	        return $remove_edit;
	    }
	}
	}