Tag: oembed

  • Cool WordPress Plugins: Embed Extended

    Cool WordPress Plugins: Embed Extended

    If you saw my last post, you may have noticed some cool embeds. These are coming from the Embed Extended plugin. This plugin takes OpenGraph data and treats it more like oEmbed data for WordPress. It works great with the block editor as well!

  • Wisps, a WordPress Plugin

    Wisps, a WordPress Plugin

    Last year I had a need for an editable JSON file that was retrievable via HTTP. Of course there’s a million ways that I could do this, but the easiest I thought of would be to have it inside of WordPress, since all of the people that needed access to edit the file already had edit access to a specific site. So I built a plugin.

    Doing this inside WordPress already brings a lot of benefits with little to no effort:

    1. User Management
    2. Revision History
    3. oEmbed Support
    4. Permalinks
    5. Syntax Highlighting Code Editor
    6. Self-Hosted Data

    Possibly more benefits as well, depending on the setup, such as caching.

    I’ve tweaked the plugin some, and I’m almost ready to submit it to the WordPress.org Plugin Repository. I just need to do the hard part of figuring out artwork. Ugh.

    Introducing Wisps:

    Wisps are embeddable and sharable code snippets for WordPress.

    With Wisps, you can have code snippets similar to Gist, Pastebin, or similar code sharing sites. Using the built-in WordPress code editor, you can write snippets to post and share. This has the benefit of WordPress revisions, auto-drafts, etc to keep a record of how code changes.

    Wisps can be downloaded by appending /download/ to the permalink, or viewed raw by adding /view/ or /raw/. There is full oEmbed support so you can just paste in a link to a wisp in the editor and it will be fully embedded.

    PrismJS is used for syntax highlighting for oEmbeds.

    You can add Wisp support to your theme either by modifying the custom post type page-wisp.php template, which will continue to display Wisps in the loop securely, or you can use add_theme_support( 'wisps' ) to tell the plugin to not automatically escape the output. You can then do what you like, such as potentially adding frontend support for syntax highlighting.

    Here’s what the oEmbed data looks like:

    (Yeah, I totally stole the design from Gists, because I’m not talented 😬)

    View the example Wisp

    View it raw

    Download it

    Currently available on GitHub

    Hopefully one day available on the WordPress.org Plugin Repository 🙂

    If you give it a try and have any suggestions, or issues drop me a line here or on GitHub!

  • Query Caching (and a little extra)

    Query Caching (and a little extra)

    By default, WordPress does not cache WP_Query queries.  Doing so can greatly improve performance.  The way I do this is via the Advanced Post Cache plugin:

    By running this plugin (hopefully as an mu-plugin) with a persistent object cache, WP_Query calls, along with get_post() calls (only if suppress_filters is false) will be cached.

    Bonus!

    Now that we’re caching queries, here’s how I do a little extra caching to squeeze out a tiny bit more performance:

    <?php
    // By default Jetpack does not cache responses from Instagram oembeds.
    add_filter( 'instagram_cache_oembed_api_response_body', '__return_true' );
    
    // Cache WP Dashboard Recent Posts Query
    add_filter( 'dashboard_recent_posts_query_args', 'cache_dashboard_recent_posts_query_args', 10, 1 );
    function cache_dashboard_recent_posts_query_args( $query_args ) {
    	$query_args['cache_results'] = true;
    	$query_args['suppress_filters'] = false;
    	return $query_args;
    }
    
    // Cache WP Dashboard Recent Drafts Query
    add_filter( 'dashboard_recent_drafts_query_args', 'cache_dashboard_recent_drafts_query_args', 10, 1 );
    function cache_dashboard_recent_drafts_query_args( $query_args ) {
    	$query_args['suppress_filters'] = false;
    	return $query_args;
    }
    
    // Cache comment counts, https://github.com/Automattic/vip-code-performance/blob/master/core-fix-comment-counts-caching.php
    add_filter( 'wp_count_comments', 'wpcom_vip_cache_full_comment_counts', 10, 2 );
    function wpcom_vip_cache_full_comment_counts( $counts = false , $post_id = 0 ){
    	//We are only caching the global comment counts for now since those are often in the millions while the per page one is usually more reasonable.
    	if ( 0 !== $post_id ) {
    		return $counts;
    	}
    
    	$cache_key = "vip-comments-{$post_id}";
    	$stats_object = wp_cache_get( $cache_key );
    
    	//retrieve comments in the same way wp_count_comments() does
    	if ( false === $stats_object ) {
    		$stats = get_comment_count( $post_id );
    		$stats['moderated'] = $stats['awaiting_moderation'];
    		unset( $stats['awaiting_moderation'] );
    		$stats_object = (object) $stats;
    
    		wp_cache_set( $cache_key, $stats_object, 'default', 30 * MINUTE_IN_SECONDS );
    	}
    
    	return $stats_object;
    }
    
    // Cache monthly media array.
    add_filter( 'media_library_months_with_files', 'wpcom_vip_media_library_months_with_files' );
    function wpcom_vip_media_library_months_with_files() {
    	$months = wp_cache_get( 'media_library_months_with_files', 'extra-caching' );
    
    	if ( false === $months ) {
    		global $wpdb;
    		$months = $wpdb->get_results( $wpdb->prepare( "
    			SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
    			FROM $wpdb->posts
    			WHERE post_type = %s
    			ORDER BY post_date DESC
    			", 'attachment' )
    		);
    		wp_cache_set( 'media_library_months_with_files', $months, 'extra-caching' );
    	}
    
    	return $months;
    }
    
    add_action( 'add_attachment', 'media_library_months_with_files_bust_cache' );
    function media_library_months_with_files_bust_cache( $post_id ) {
    	if ( defined( 'WP_IMPORTING' ) && WP_IMPORTING ) {
    		return;
    	}
    
    	// What month/year is the most recent attachment?
    	global $wpdb;
    	$months = $wpdb->get_results( $wpdb->prepare( "
    			SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
    			FROM $wpdb->posts
    			WHERE post_type = %s
    			ORDER BY post_date DESC
    			LIMIT 1
    		", 'attachment' )
    	);
    
    	// Simplify by assigning the object to $months
    	$months = array_shift( array_values( $months ) );
    
    	// Compare the dates of the new, and most recent, attachment
    	if (
    		! $months->year == get_the_time( 'Y', $post_id ) &&
    		! $months->month == get_the_time( 'm', $post_id )
    	) {
    		// the new attachment is not in the same month/year as the
    		// most recent attachment, so we need to refresh the transient
    		wp_cache_delete( 'media_library_months_with_files', 'extra-caching' );
    	}
    }Code language: HTML, XML (xml)