# wpgetapi/1.9.3/includes/class-admin-options.php

WPGet API – Connect to any external REST API, version 1.9.3. 734 lines.

- Page: https://pluginprobe.com/plugins/wpgetapi/1.9.3/code/includes/class-admin-options.php
- Raw: https://pluginprobe.com/plugins/wpgetapi/1.9.3/raw/includes/class-admin-options.php
- Modified: 2023-06-22T01:53:12+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/wpgetapi/1.9.3/code/includes/class-admin-options.php#L10-L20`.

```php
<?php
/**
 * Settings Required
 *
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) exit;

if ( ! class_exists( 'WpGetApi_Admin_Options' ) ) :

/**
 * CMB2 Theme Options
 * @version 0.1.0
 */
class WpGetApi_Admin_Options {
	
	/**
	 * Array of metaboxes/fields
	 * @var array
	 */
	public $option_metabox = array();

	/**
	 * Array of metaboxes/fields
	 * @var array
	 */
	public $metabox_id = '';

	/**
	 * Options Page title
	 * @var string
	 */
	protected $title = '';

	/**
	 * Options Page title
	 * @var string
	 */
	protected $menu_title = '';

	/**
	 * Options Tab Pages
	 * @var array
	 */
	public $options_pages = array();

	/**
	 * Is pro plugin installed
	 * @var array
	 */
	public $pro_plugin = false;

	/**
	 * Holds an instance of the object
	 *
	 * @var Myprefix_Admin
	 **/
	private static $instance = null;

	/**
	 * Constructor
	 * @since 0.1.0
	 */
	private function __construct() {
		// Set our title
		$this->menu_title = __( 'WPGetAPI', 'wpgetapi' );
		$this->title = __( 'WPGetAPI', 'wpgetapi' );
		
	}

	/**
	 * Returns the running object
	 *
	 * @return Myprefix_Admin
	 **/
	public static function get_instance() {
		if( is_null( self::$instance ) ) {
			self::$instance = new self();
			self::$instance->hooks();
		}
		return self::$instance;
	}
	
	/**
	 * Initiate our hooks
	 * @since 0.1.0
	 */
	public function hooks() {
		add_action( 'admin_init', array( $this, 'init' ) );
		add_action( 'admin_menu', array( $this, 'add_options_pages' ) );

		add_action( 'cmb2_admin_init', array( $this, 'init_custom_fields' ) );

		add_action( "cmb2_save_options-page_fields", array( $this, 'redirect' ), 1, 2 );

		add_action( 'admin_footer', array( $this, 'load_testing_javascript' ) ); 

		add_action( 'wp_ajax_wpgetapi_test_endpoint', array( $this, 'test_the_endpoint' ) );

	}


	/**
	 * Setup our custom fields
	 * @since  0.1.0
	 */
	public function init_custom_fields() {
		require_once WPGETAPIDIR . 'includes/class-fields.php';
		WpGetApi_Parameter_Field::init_parameter();
	}

	/**
	 * Register our setting to WP
	 * @since  0.1.0
	 */
	public function init() {
		$this->pro_plugin = is_plugin_active( 'wpgetapi-extras/wpgetapi-extras.php' ) ? true : false;
		$option_tabs = self::option_fields();
		foreach ($option_tabs as $index => $option_tab) {
			register_setting( $option_tab['id'], $option_tab['id'] );
		}
	}


	/**
	 * Get our saved API's from setup
	 * @since  0.1.0
	 */
	public function get_apis() {
		$setup = get_option( 'wpgetapi_setup' );
		if( empty( $setup ) || ! isset( $setup['apis'] ) || empty( $setup['apis'] ) )
			return;
		return $setup['apis'];
	}


	/**
	 * Add the options metabox to the array of metaboxes
	 * @since  0.1.0
	 */
	public function option_fields() {

		//Only need to initiate the array once per page-load
		if ( ! empty( $this->option_metabox ) ) {
			return $this->option_metabox;
		}

		// setup tab
		$option_metabox[] = array(
			'title'      => __( 'Setup', 'wpgetapi' ), 
			'menu_title' => __( 'Setup', 'wpgetapi' ),
			'id'         => 'wpgetapi_setup',
			'desc'       => __( 'Add the details of the API(s) you are using. Endpoints will be setup in the next step after hitting save.', 'wpgetapi' ),
			'show_on'    => array( 'key' => 'options-page', 'value' => array( 'wpgetapi_setup' ), ),
			'show_names' => true,
			'fields'     => $this->setup_fields(),
		);

		// get our saved API's and create as tabs
		if( $this->get_apis() ) {

			foreach ( $this->get_apis() as $index => $api ) {
				
				$name 		= isset( $api['name'] ) && $api['name'] != '' ? sanitize_text_field( $api['name'] ) : 'API ' . absint( $index );
				$api_id 	= isset( $api['id'] ) && $api['id'] != '' ? sanitize_text_field( $api['id'] ) : $name;
				$metabox_id = strtolower( str_replace( '-', '_', sanitize_file_name( 'wpgetapi-' . $api_id ) ) );
				$base_url 	= isset( $api['base_url'] ) && $api['base_url'] != '' ? esc_url_raw( $api['base_url'], array( 'http', 'https' ) ) : '';
				$type 		= isset( $api['auth_type'] ) && $api['auth_type'] != '' ? sanitize_text_field( $api['auth_type'] ) : '';

				// tab
				$option_metabox[] = array(
					'title'      => $name,
					'menu_title' => $name,
					'id'         => $metabox_id,
					'desc'       => '',
					'show_on'    => array( 'key' => 'options-page', 'value' => array( $metabox_id ), ),
					'show_names' => true,
					'fields'     => $this->endpoint_fields( $type, $api_id, $base_url ),
				);

			}

		}

		$option_metabox = apply_filters( 'wpgetapi_admin_pages', $option_metabox );

		return $option_metabox;

	}

	public function setup_fields() {

		$fields[] = array(
		    'id'          => 'apis',
		    'type'        => 'group',
		    'name'        => '',
		    'description' => '',
		    'options'     => array(
		        'group_title'   => __( 'API {#}', 'wpgetapi' ), 
		        'add_button'    => __( 'Add New API', 'wpgetapi' ),
		        'remove_button' => __( 'Remove API', 'wpgetapi' ),
		        'sortable'      => true, // beta
		    ),
		    'fields'     => array(
				array(
				    'name' => __( 'API Name', 'wpgetapi' ),
				    'id'   => 'name',
				    'type' => 'text',
				    'attributes' => array( 
				    	'required' => true,
				    	'placeholder' => 'Google Maps',
				    ),
				    'desc' => __( 'The name of the API you are connecting to.', 'wpgetapi' ),
				),
				array(
				    'name' => __( 'Unique ID', 'wpgetapi' ),
				    'id'   => 'id',
				    'type' => 'text',
				    'attributes' => array( 
				    	'required' => true,
				    	'placeholder' => 'google_maps',
				    ),
				    'desc' => __( 'A unique ID for your API. Lowercase letters and underscores only.', 'wpgetapi' ),
				),
				array(
				    'name' => __( 'Base URL', 'wpgetapi' ),
				    'id'   => 'base_url',
				    'type' => 'text',
				    'attributes' => array( 
				    	'required' => true,
				    	'placeholder' => 'https://maps.googleapis.com/maps/api',
				    ),
				    'desc' => __( 'The base URL of the API you are connecting to.', 'wpgetapi' ),
				),
				
		    )
		);

		return $fields;

	}


	/**
	 * Endpoint settings.
	 * @return sale info array
	 *
	 */
	public function endpoint_fields( $type = '', $api_id = '', $base_url = '' ) {

		$fields = array();

		$cache_disabled = $this->pro_plugin ? '' : 'disabled';
		$cache_url = $this->pro_plugin ? '<a target="_blank" href="https://wpgetapi.com/docs/caching-api-calls/">Help <span class="dashicons dashicons-external"></span></a>' : '<a target="_blank" href="https://wpgetapi.com/downloads/pro-plugin/?utm_campaign=Cache Pro Plugin&utm_medium=Admin&utm_source=User">PRO Plugin<span class="dashicons dashicons-external"></span></a>';

		$endpoint_fields = apply_filters( 'wpgetapi_fields_endpoints', array(
			array(
			    'name' => __( 'Unique ID', 'wpgetapi' ),
			    'id'   => 'id',
			    'type' => 'text',
			    'classes' => 'field-id',
			    'attributes' => array( 
			    	'required' => true,
			    	'placeholder' => 'new_endpoint',
			    ),
			    'desc' => __( 'A unique ID for this endpoint. Lowercase letters and underscores only.', 'wpgetapi' ),
			    'before_row' => "wpgetapi_output_top_of_endpoint",
			    'api_id' => $api_id,

			),
			array(
			    'name' => __( 'Endpoint', 'wpgetapi' ),
			    'id'   => 'endpoint',
			    'type' => 'text',
			    'classes' => 'field-endpoint',
			    'attributes' => array( 
			    	'required' => true,
			    	'placeholder' => '/newendpoint',
			    ),
			    'desc' => __( 'The endpoint that will be appended to the base URL.', 'wpgetapi' ),
			),
			array(
			    'name' => __( 'Method', 'wpgetapi' ),
			    'id'   => 'method',
			    'type' => 'select',
			    'classes' => 'field-method',
			    'attributes' => array( 
			    	'required' => true,
			    ),
			    'options' => array( 
			    	'GET' => 'GET',
			    	'POST' => 'POST',
			    	'PUT' => 'PUT',
			    	'DELETE' => 'DELETE',
			    ),
			    'desc' => __( 'The request method for this endpoint.', 'wpgetapi' ),
			),

			array(
			    'name' => __( 'Results Format', 'wpgetapi' ),
			    'id'   => 'results_format',
			    'type' => 'select',
			    'classes' => 'field-results-format',
			    'attributes' => array( 
			    	'required' => true,
			    ),
			    'options_cb' => 'wpgetapi_results_format_options',
			    'desc' => sprintf( 
			    	__( 'The format of the results. %1s', 'wpgetapi' ),
			    	'<a target="_blank" href="https://wpgetapi.com/docs/format-api-data-as-html/?utm_campaign=Shortcode JSON&utm_medium=Admin&utm_source=User">More options <span class="dashicons dashicons-external"></span></a>'
			    )
			),

			array(
			    'name' => __( 'Cache Time', 'wpgetapi' ),
	            'id'   => 'cache_time',
	            'type' => 'text',
	            'classes' => 'field-cache-time',
	            'attributes' => array( 
	                'placeholder' => '',
	                $cache_disabled => $cache_disabled,
	            ),
	            'desc' => sprintf( 
	            	__( 'The time in seconds to cache this request for. %1s', 'wpgetapi' ),
			    	$cache_url
			    )
			),

			array(
			    'name' => __( 'Query String', 'wpgetapi' ),
			    'id'   => 'query_parameters',
			    'type' => 'parameter',
			    'classes' => 'field-query-parameters',
			    'repeatable' => true,
			    'desc' => sprintf( 
			    	__( 'Parameters as name/value pairs that will be appended to the URL. %1s', 'wpgetapi' ),
			    	'<a target="_blank" href="https://wpgetapi.com/docs/adding-query-string-parameters/?utm_campaign=Query String&utm_medium=Admin&utm_source=User">Help <span class="dashicons dashicons-external"></span></a>'
			    )
			),
			array(
			    'name' => __( 'Headers', 'wpgetapi' ),
			    'id'   => 'header_parameters',
			    'type' => 'parameter',
			    'classes' => 'field-header-parameters',
			    'repeatable' => true,
			    'desc' => sprintf( 
			    	__( 'Parameters as name/value pairs, sent in the headers. %1s', 'wpgetapi' ),
			    	'<a target="_blank" href="https://wpgetapi.com/docs/sending-headers-in-request/?utm_campaign=Headers&utm_medium=Admin&utm_source=User">Help <span class="dashicons dashicons-external"></span></a>'
			    )
			),
			array(
			    'name' => __( 'Body POST Fields', 'wpgetapi' ),
			    'id'   => 'body_parameters',
			    'type' => 'parameter',
			    'classes' => 'field-body-parameters',
			    'repeatable' => true,
			    'desc' => sprintf( 
			    	__( 'Parameters as name/value pairs, sent in the body as POST fields. %1s', 'wpgetapi' ),
			    	'<a target="_blank" href="https://wpgetapi.com/docs/sending-post-fields-in-request/?utm_campaign=Body&utm_medium=Admin&utm_source=User">Help <span class="dashicons dashicons-external"></span></a>'
			    )
			),
			array(
			    'name' => __( 'Encode Body', 'wpgetapi' ),
			    'id'   => 'body_json_encode',
			    'type' => 'select',
			    'classes' => 'field-body-json-encode',
			    'options' => array(
			    	'false'    => __( 'No encoding (raw)', 'wpgetapi' ),
			        'true'   => __( 'JSON encode', 'wpgetapi' ), 
			        'url'   => __( 'URL encode (x-www-form-urlencoded)', 'wpgetapi' ), 
			        'xml'   => __( 'XML format (available in PRO only)', 'wpgetapi' ), 
			    ),
			    'desc' => __( 'Encoding of the above Body parameters. ', 'wpgetapi' ),
			),
	    ) );


		$fields[] = array(
		    'id'          => 'endpoints',
		    'type'        => 'group',
		    'name'        => '', 
		    'description' => '',		    
		    'options'     => array(
		        'group_title'   => __( 'Endpoint {#}', 'wpgetapi' ), 
		        'add_button'    => __( 'Add Endpoint', 'wpgetapi' ),
		        'remove_button' => __( 'Remove Endpoint', 'wpgetapi' ),
		        'sortable'      => true, // beta
		    ),
		    'before_group' => '<pre class="url">Base URL: <span>' . $base_url . '</span></pre>',
		    'fields' => $endpoint_fields,
		);
		
		return apply_filters( 'wpgetapi_fields', $fields );
		
	}


	public function add_options_pages() {

		$option_tabs = self::option_fields();

		foreach ($option_tabs as $index => $option_tab) {
			if ( $index == 0) {

				$this->options_pages[] = add_menu_page( $this->title, $this->menu_title, 'manage_options', $option_tab['id'], array( $this, 'admin_page_display' ), 'none'
				); //Link admin menu to first tab

				add_submenu_page( $option_tabs[0]['id'], $this->menu_title, $option_tab['menu_title'], 'manage_options', $option_tab['id'], array( $this, 'admin_page_display' ) ); //Duplicate menu link for first submenu page
			} else {
				$this->options_pages[] = add_submenu_page( $option_tabs[0]['id'], $this->menu_title, $option_tab['menu_title'], 'manage_options', $option_tab['id'], array( $this, 'admin_page_display' ) );
			}
		}

		foreach ( $this->options_pages as $page ) {
			// Include CMB CSS in the head to avoid FOUC
			add_action( "admin_print_styles-{$page}", array( 'CMB2_Hookup', 'enqueue_cmb_css' ) );
		}

	}

	/**
	 * Admin page markup. Mmply handled by CMB2
	 * @since  0.1.0
	 */
	public function admin_page_display() {

		$option_tabs = self::option_fields(); //get all option tabs
		$tab_forms = array();
		?>

		<div class="wrap wpgetapi">

			<div class="main_content_cell">

				<h1 class="wp-heading-inline">
					<img width="24" height="22" src="<?php echo esc_url( WPGETAPIURL . 'assets/img/wpgetapi-icon.png' ); ?>" /> <?php esc_html_e( $this->title, 'wpgetapi' ) ?> <span class="vnum"><?php echo WPGETAPIVERSION; ?></span>
				</h1>
				<!-- Options Page Nav Tabs -->
				<h2 class="nav-tab-wrapper">
					<?php foreach ($option_tabs as $option_tab) :
						
						$tab_slug = $option_tab['id'];
						$nav_class = 'nav-tab';
						if ( $tab_slug == $_GET['page'] ) {
							$nav_class .= ' nav-tab-active'; //add active class to current tab
							$tab_forms[] = $option_tab; //add current tab to forms to be rendered
						}

						?>
						
						<a class="<?php esc_attr_e( $nav_class ); ?>" href="<?php esc_url( menu_page_url( $tab_slug ) ); ?>"><?php esc_attr_e( $option_tab['menu_title'], 'wpgetapi' ); ?></a>

					<?php endforeach; ?>
				</h2>
				<!-- End of Nav Tabs -->

				<?php 
				//render all tab forms (normaly just 1 form) 
				foreach ($tab_forms as $tab_form) : ?>
				
					<div id="<?php esc_attr_e($tab_form['id']); ?>" class="cmb-form group">
						<div class="metabox-holder">
							<div class="pmpbox pad">
								<h3 class="title"><?php esc_html_e($tab_form['title'], 'wpgetapi'); ?></h3>
								<div class="desc"><?php echo wp_kses_post( $tab_form['desc'] ); ?></div>
								<?php cmb2_metabox_form( $tab_form, $tab_form['id'], $tab_form ); ?>
							</div>
						</div>
					</div>

				<?php endforeach; ?>

			</div>

			<div class="sidebar_cell">
				
				<?php
				$sidebar = self::sidebar_display();
				echo apply_filters( 'wpgetapi_admin_sidebar_display', $sidebar );
				?>

			</div>

		</div>

		<?php

	}


	public function test_the_endpoint() {
		
		$api_id = sanitize_text_field( $_POST['api_id'] );
		$endpoint_id = sanitize_text_field( $_POST['endpoint_id'] );
		$data = wpgetapi_endpoint( $api_id, $endpoint_id, array( 'test_endpoint' => true ) );

		$output = array( 
			'data' => $data, 
			'endpoint_id' => $endpoint_id 
		);
	    echo json_encode( $output );

		wp_die(); // this is required to terminate immediately and return a proper response

	}


	public function load_testing_javascript() { ?>

		<script type="text/javascript" >

		jQuery(document).ready(function($) {

			$('body').on( 'click', '.wpgetapi-test-area .test-button', function(){//delegated

		        var $this = $(this);
		        var area = $this.parents( '.wpgetapi-test-area' );
		        var api_id = $( area ).data( 'api' );
		        var endpoint_id = $( area ).data( 'endpoint' );

		        // disable button
		        $this.attr( 'disabled', true );

				var data = {
					'action': 'wpgetapi_test_endpoint',
					'api_id': api_id,
					'endpoint_id': endpoint_id
				};

				// send and get response
				jQuery.post(ajaxurl, data, function( response ) {
					
					var output = JSON.parse( response );

					jQuery( '.wpgetapi-test-area[data-endpoint="' + output.endpoint_id + '"] .handle' ).show();

					jQuery( '.wpgetapi-test-area[data-endpoint="' + output.endpoint_id + '"] .wpgetapi-result' ).html( output.data);

					// enable button
		        	$( '.wpgetapi-test-area[data-endpoint="' + output.endpoint_id + '"] .test-button' ).attr( 'disabled', false );

				});

		    });

		    $( '.wpgetapi-test-area .handle' ).on('click', function() {
			    $('.wpgetapi-result').toggle();
			});

		});

		</script> <?php

	}


	/**
	 * Sidebar markup.
	 * @since  1.4.1
	 */
	public function sidebar_display() {

		ob_start();

		// do our setup page
        if( isset( $_GET['page'] ) && $_GET['page'] === 'wpgetapi_setup' )
            return $this->sidebar_setup_page();

		?>

			<div class="box">
                <strong><?php esc_html_e( 'Endpoint Instructions', 'wpgetapi' ); ?></strong>
                <ol>
                	<li><?php _e( 'Give your endpoint a <b>Unique ID</b>', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Add the <b>Endpoint</b> which can be found in your API docs', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Set the <b>Method</b> - GET for getting data & POST for sending data to the API', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Set the desired <b>Results Format</b>', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Other fields are optional & will depend on your API', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Hit the Save button', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Copy the Template Tag or Shortcode & paste into page, post or theme file', 'wpgetapi' ); ?></li>
                </ol>
            </div>
             
            <hr> 

           	<div class="box">    
           		<strong><?php esc_html_e( 'Getting Help', 'wpgetapi' ); ?></strong>     
                <ul>
					<li><?php 
					printf(
						esc_html__( 'View the %1$s', 'cmb2' ),
						'<a target="_blank" href="https://wpgetapi.com/docs/quick-start-guide/?utm_campaign=Docs&utm_medium=Admin&utm_source=User">Quick Start Guide</a>'
					);
					?></li>
					<li><?php 
					printf(
						esc_html__( 'View the %1$s', 'cmb2' ),
						'<a target="_blank" href="https://wpgetapi.com/docs/frequently-asked-questions/?utm_campaign=Docs&utm_medium=Admin&utm_source=User">FAQs</a>'
					);
					?></li>
					<li><?php 
					printf(
						esc_html__( 'Do more with the %1$s', 'cmb2' ),
						'<a target="_blank" href="https://wpgetapi.com/downloads/pro-plugin/?utm_campaign=Pro&utm_medium=Admin&utm_source=User">PRO Plugin</a>'
					);
					?></li>
                </ul>  
            </div>

		<?php
		$content = ob_get_contents();
		ob_end_clean();
		return $content;

	}


    /**
     * Sidebar for our setup page.
     * @since 1.4.4
     */
    public function sidebar_setup_page() {

        ob_start();
        ?>

            <div class="box">
                <strong><?php esc_html_e( 'Setup Instructions', 'wpgetapi' ); ?></strong>
                <ol>
                	<li><?php _e( 'Name your API in the <b>API Name</b> field', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Give your API a <b>Unique ID</b>', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Add the <b>Base URL</b> of your API. This can be found in the docs of your API', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Hit the Save button', 'wpgetapi' ); ?></li>
                	<li><?php _e( 'Visit the new tab that will be created', 'wpgetapi' ); ?></li>
                </ol>
            </div>
            
            <hr>

           	<div class="box">    
           		<strong><?php esc_html_e( 'Getting Help', 'wpgetapi' ); ?></strong>     
                <ul>
					<li><?php 
					printf(
						esc_html__( 'View the %1$s', 'cmb2' ),
						'<a target="_blank" href="https://wpgetapi.com/docs/quick-start-guide/?utm_campaign=Docs&utm_medium=Admin&utm_source=User">Quick Start Guide</a>'
					);
					?></li>
					<li><?php 
					printf(
						esc_html__( 'View the %1$s', 'cmb2' ),
						'<a target="_blank" href="https://wpgetapi.com/docs/frequently-asked-questions/?utm_campaign=Docs&utm_medium=Admin&utm_source=User">FAQs</a>'
					);
					?></li>
					<li><?php 
					printf(
						esc_html__( 'Do more with the %1$s', 'cmb2' ),
						'<a target="_blank" href="https://wpgetapi.com/downloads/pro-plugin/?utm_campaign=Pro&utm_medium=Admin&utm_source=User">PRO Plugin</a>'
					);
					?></li>
                </ul>  
            </div>

        <?php
        $content = ob_get_contents();
        ob_end_clean();
        return $content;

    }


	/**
	 * Tabs don't immmediately appear on save, so this hack!
	 * @since  0.1.0
	 */
	public function redirect( $object_id, $updated ) {

		if( $object_id == 'wpgetapi_setup' ) {
			
			add_settings_error( 'wpgetapi-notices', '', 'Saved, reloading page...', 'updated' );
			settings_errors( 'wpgetapi-notices' );
			?>

			<script>
				setTimeout(function() {
				    location.reload();
				}, 1000);
			</script>
			<?php

		} else if ( strpos( $object_id, 'wpgetapi_' ) !== false ) {

			$text = apply_filters( 'wpgetapi_admin_notice_text', __( 'Saved.', 'wpgetapi' ), $object_id );
			add_settings_error( 'wpgetapi-notices', '', $text, 'updated' );
			settings_errors( 'wpgetapi-notices' );

		}

	}


	/**
	 * Public getter method for retrieving protected/private variables
	 * @since  0.1.0
	 * @param  string  $field Field to retrieve
	 * @return mixed          Field value or exception is thrown
	 */
	public function __get( $field ) {
		// Allowed fields to retrieve
		if ( in_array( $field, array( 'key', 'fields', 'title', 'options_pages' ), true ) ) {
			return $this->{$field};
		}
		if ( 'option_metabox' === $field ) {
			return $this->option_fields();
		}
		throw new Exception( 'Invalid property: ' . $field );
	}

}

/**
 * Helper function to get/return the WpGetApi_Admin_Options object
 * @since  0.1.0
 * @return WpGetApi_Admin_Options object
 */
function wpgetapi_admin_options() {
	return WpGetApi_Admin_Options::get_instance();
}

// Get it started
wpgetapi_admin_options();

endif;
```