Limit Woocommerce Shipping Options

A client recently asked me to modify his Woocommerce checkout process so that if the cart contained one particular product then shipping for the entire order would be restricted to a single option, but if that product was not in the cart then every shipping option except for that one would be available.

A Gist for my solution, modifying the Woocommerce template file cart-shipping.php is at GitHub if you want to get right to work, the rest is mostly me patting myself on the back.


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Gutenberg Block Styles Headstart

I plan to keep banging this drum — WordPress 5.0 is coming this year, a lot will change, and the big change will be the introduction of a new default editor codenamed “Gutenberg.”

Elsewhere I’ve (hastily) sketched out some things WordPress users should do to prepare for 5.0, here I’m addressing WordPress developers.

Blocks of content entered into a post (keep in mind that everything is a post) via Gutenberg get tagged with a block-specific CSS class, like .wp-block-button or .wp-block-cover-image´╗┐. Default styles for core-blocks are loaded (for now, While we use a plugin) from somedomain.com/wp-content/plugins/gutenberg/build/core-blocks/style.css, and are loaded before the theme stylesheets. The Gutenberg developers have written well-formed CSS so a theme’s stylesheet overrides the default styles without problems like over-specified selectors or !important declarations.

Much of my work is building custom WordPress themes and the custom themes I make almost always start from Automattic’s Underscores starter-theme. Underscores provides modularized CSS using SASS. Anticipating WordPress 5.0, and for the sites (like this one) that currently use the plugin, I’ve created a collection of SASS files copying the default styles for Gutenberg core blocks, organized according to where the block sits in the editor’s selection dropdown. The files are available on Github.

A developer can incorporate this collection to a theme’s SASS folder for quick availability of the necessary selectors for styling blocks, providing a head-start in matching block styles to the theme.

In addition to the theme styles, there is also a collection of editor-styles in the GitHub project. I don’t want to blab about it here, but with careful development of editor-styles, a theme can come very close to displaying the editor contents just as they will appear on the live site, approaching the What You See Is What You Get promise that no one has ever quite delivered.

Getting Ready For WordPress 5.0

WordPress 5.0 is expected to be released in August. It’s a big change that will break some sites that aren’t prepared.

Here’s my take on what ought to be done when a release date is announced:

  • suspend any automatic upgrades;
  • make sure a backup program is in place;
  • install 5.0 and test on a staging/development site before upgrading a live site;
  • install, activate, and test a "Classic Editor" plugin.

The big change in WordPress 5.0 is the vastly improved editor (called “Gutenberg”) and it won’t work on existing themes without revising them. The necessary revisions aren’t predictable so we can’t estimate even a ballpark cost for the necessary revisions.

Kitchen-sink themes like Divi and Avada will probably take it upon themselves to replace Gutenberg with their own page-builder, but they might be sacrificing some medium-term benefits — Automattic has big plans for WordPress and much of it is centered around maximum use of the new editor.

It’s a good time to start planning to re-do older sites, looking at completion in early 2019 when WordPress 5.x has stabilized a little.

Screaming Performance

steveclason-pagespeedThe theme used on this site, “SwingYourPartner” (that’s what popped into my head) was built to maximize page performance. The screen-shot shows the current score on Page Speed Insights. The two Font Awesome files mentioned as things to improve are served by the CDN without expiration directives in the header, and although I could work around that by serving local copies, the advantages of the CDN outweigh the Page Speed Insights ‘score’, to my mind, because the site is fast, loading in about 2 seconds.(read more )