Common_Ratings

Rate items on a scale from 0 to 5

class Common_Ratings {

	public function __construct() {

		if ( is_admin() ) {
			add_action( 'load-post.php',     array( $this, 'init_metabox' ) );
			add_action( 'load-post-new.php', array( $this, 'init_metabox' ) );
		}

	}

	public function init_metabox() {

		add_action( 'add_meta_boxes',        array( $this, 'add_metabox' )         );
		add_action( 'save_post',             array( $this, 'save_metabox' ), 10, 2 );

	}

	public function add_metabox() {

		add_meta_box(
			'ratings-meta',
			__( 'Ratings', '10sm' ),
			array( $this, 'render_metabox' ),
			array( 'bean-audio', 'bean-video', 'bean-book', 'bean-image', 'bean-gallery', 'bean-person', 'bean-company', 'you-do-review' ),
			'advanced',
			'default'
		);

	}

	public function render_metabox( $post ) {

		// Add nonce for security and authentication.
		wp_nonce_field( 'tensm_nonce_action', 'tensm_nonce' );

		// Retrieve an existing value from the database.
		$tensm_ratings_radio = get_post_meta( $post->ID, 'tensm_ratings-radio', true );

		// Set default values.
		if( empty( $tensm_ratings_radio ) ) $tensm_ratings_radio = '';

		// Form fields.
		echo '<table class="form-table">';

		echo '	<tr>';
		echo '		<th><label for="tensm_ratings-radio" class="tensm_ratings-radio_label">' . __( 'Rating', '10sm' ) . '</label></th>';
		echo '		<td>';
		echo '			<label><input type="radio" name="tensm_ratings-radio" class="tensm_ratings_radio_field" value="tensm_0" ' . checked( $tensm_ratings_radio, 'tensm_0', false ) . '> ' . __( '0', '10sm' ) . '</label><br>';
		echo '			<label><input type="radio" name="tensm_ratings-radio" class="tensm_ratings_radio_field" value="tensm_1" ' . checked( $tensm_ratings_radio, 'tensm_1', false ) . '> ' . __( '1', '10sm' ) . '</label><br>';
		echo '			<label><input type="radio" name="tensm_ratings-radio" class="tensm_ratings_radio_field" value="tensm_2" ' . checked( $tensm_ratings_radio, 'tensm_2', false ) . '> ' . __( '2', '10sm' ) . '</label><br>';
		echo '			<label><input type="radio" name="tensm_ratings-radio" class="tensm_ratings_radio_field" value="tensm_3" ' . checked( $tensm_ratings_radio, 'tensm_3', false ) . '> ' . __( '3', '10sm' ) . '</label><br>';
		echo '			<label><input type="radio" name="tensm_ratings-radio" class="tensm_ratings_radio_field" value="tensm_4" ' . checked( $tensm_ratings_radio, 'tensm_4', false ) . '> ' . __( '4', '10sm' ) . '</label><br>';
		echo '			<label><input type="radio" name="tensm_ratings-radio" class="tensm_ratings_radio_field" value="tensm_5" ' . checked( $tensm_ratings_radio, 'tensm_5', false ) . '> ' . __( '5', '10sm' ) . '</label><br>';
		echo '			<p class="description">' . __( '0 = terrible, 5 = great', '10sm' ) . '</p>';
		echo '		</td>';
		echo '	</tr>';

		echo '</table>';

	}

	public function save_metabox( $post_id, $post ) {

		// Add nonce for security and authentication.
		$nonce_name   = isset( $_POST['tensm_nonce'] ) ? $_POST['tensm_nonce'] : '';
		$nonce_action = 'tensm_nonce_action';

		// Check if a nonce is set.
		if ( ! isset( $nonce_name ) )
			return;

		// Check if a nonce is valid.
		if ( ! wp_verify_nonce( $nonce_name, $nonce_action ) )
			return;

		// Check if the user has permissions to save data.
		if ( ! current_user_can( 'edit_post', $post_id ) )
			return;

		// Check if it's not an autosave.
		if ( wp_is_post_autosave( $post_id ) )
			return;

		// Check if it's not a revision.
		if ( wp_is_post_revision( $post_id ) )
			return;

		// Sanitize user input.
		$tensm_new_ratings_radio = isset( $_POST[ 'tensm_ratings-radio' ] ) ? $_POST[ 'tensm_ratings-radio' ] : '';

		// Update the meta field in the database.
		update_post_meta( $post_id, 'tensm_ratings-radio', $tensm_new_ratings_radio );

	}

}

new Common_Ratings;