Add post_meta to disable on a per post basis

includes/class-displayfeaturedimagegenesis-output.php

@@ -50,6 +50,11 @@ class Display_Featured_Image_Genesis_Output {
 			return;
 		}
 
+		// if the output is disabled for this specific post, quit
+		if ( is_singular() && get_post_meta( get_the_ID(), '_displayfeaturedimagegenesis_disable', true ) ) {
+			return;
+		}
+
 		$this->common = new Display_Featured_Image_Genesis_Common();
 		$this->item   = Display_Featured_Image_Genesis_Common::get_image_variables();
 		add_filter( 'jetpack_photon_override_image_downsize', '__return_true' );

includes/class-displayfeaturedimagegenesis-postmeta.php

@@ -0,0 +1,92 @@
+<?php
+
+/**
+ * Class Display_Featured_Image_Genesis_Post_Meta
+ * @package   DisplayFeaturedImageGenesis
+ * @author    Robin Cornett <hello@robincornett.com>
+ * @license   GPL-2.0+
+ * @link      http://robincornett.com
+ * @copyright 2014-2016 Robin Cornett Creative, LLC
+ */
+class Display_Featured_Image_Genesis_Post_Meta {
+
+	/**
+	 * The plugin setting
+	 * @var $setting
+	 */
+	protected $setting;
+
+	/**
+	 * Post meta key to disable buttons
+	 * @var string
+	 */
+	protected $disable = '_displayfeaturedimagegenesis_disable';
+
+	/**
+	 * Build the metabox with the checkbox setting.
+	 */
+	public function meta_box( $content ) {
+
+		$check = get_post_meta( get_the_ID(), $this->disable, true ) ? 1 : '';
+
+		wp_nonce_field( 'displayfeaturedimagegenesis_post_save', 'displayfeaturedimagegenesis_post_nonce' );
+		$output  = '<p>';
+		$output .= sprintf( '<input type="checkbox" id="%1$s" name="%1$s" %2$s/>', $this->disable, checked( $check, 1, false ) );
+		$output .= sprintf( '<label for="%s">%s</label>', $this->disable, __( 'Don\'t show the featured image on this post', 'display-featured-image-genesis' ) );
+		$output .= '</p>';
+
+		return $output . $content;
+	}
+
+	/**
+	 * Update the post meta.
+	 * @param $post_id
+	 */
+	public function save_meta( $post_id ) {
+
+		// Bail if we're doing an auto save
+		if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
+			return;
+		}
+
+		// if our nonce isn't there, or we can't verify it, bail
+		if ( ! $this->user_can_save( 'displayfeaturedimagegenesis_post_save', 'displayfeaturedimagegenesis_post_nonce' ) ) {
+			return;
+		}
+
+		// if our current user can't edit this post, bail
+		if ( ! current_user_can( 'edit_posts' ) ) {
+			return;
+		}
+
+		if ( isset( $_POST[ $this->disable ] ) ) {
+			update_post_meta( $post_id, $this->disable, 1 );
+		} else {
+			delete_post_meta( $post_id, $this->disable );
+		}
+	}
+
+	/**
+	 * Determines if the user has permission to save the information from the submenu
+	 * page.
+	 *
+	 * @since    1.2.0
+	 * @access   protected
+	 *
+	 * @param    string $action The name of the action specified on the submenu page
+	 * @param    string $nonce  The nonce specified on the submenu page
+	 *
+	 * @return   bool                True if the user has permission to save; false, otherwise.
+	 * @author   Tom McFarlin (https://tommcfarlin.com/save-wordpress-submenu-page-options/)
+	 */
+	protected function user_can_save( $action, $nonce ) {
+		$is_nonce_set   = isset( $_POST[ $nonce ] );
+		$is_valid_nonce = false;
+
+		if ( $is_nonce_set ) {
+			$is_valid_nonce = wp_verify_nonce( $_POST[ $nonce ], $action );
+		}
+
+		return ( $is_nonce_set && $is_valid_nonce );
+	}
+}

includes/class-displayfeaturedimagegenesis.php

@@ -46,6 +46,12 @@ class Display_Featured_Image_Genesis {
 	 */
 	protected $output;
 
+	/**
+	 * Updates metabox on post edit page
+	 * @var Display_Featured_Image_Genesis_Post_Meta $postmeta
+	 */
+	protected $postmeta;
+
 	/**
 	 * Handles RSS feed output
 	 * @var Display_Featured_Image_Genesis_RSS $rss
@@ -76,12 +82,13 @@ class Display_Featured_Image_Genesis {
 	 * @param $settings
 	 * @param $taxonomies
 	 */
-	function __construct( $admin, $author, $common, $description, $output, $rss, $settings, $taxonomies ) {
+	function __construct( $admin, $author, $common, $description, $output, $postmeta, $rss, $settings, $taxonomies ) {
 		$this->admin       = $admin;
 		$this->author      = $author;
 		$this->common      = $common;
 		$this->description = $description;
 		$this->output      = $output;
+		$this->postmeta    = $postmeta;
 		$this->rss         = $rss;
 		$this->settings    = $settings;
 		$this->taxonomies  = $taxonomies;
@@ -112,6 +119,8 @@ class Display_Featured_Image_Genesis {
 		add_filter( 'plugin_action_links_' . DISPLAYFEATUREDIMAGEGENESIS_BASENAME, array( $this, 'add_settings_link' ) );
 		add_filter( 'displayfeaturedimagegenesis_get_setting', array( $this->settings, 'get_display_setting' ) );
 		add_filter( 'genesis_get_image_default_args', array( $this->output, 'change_thumbnail_fallback' ) );
+		add_filter( 'admin_post_thumbnail_html', array( $this->postmeta, 'meta_box' ) );
+		add_action( 'save_post' , array( $this->postmeta, 'save_meta' ) );
 
 	}