WordPress Archives - Page 2 of 12

Switch To Another Theme On Certain Pages In WordPress

August 13, 2016 by Yoren Chang

I wrote a tiny WordPress plugin to switch themes between certain pages and the rest ones of a site. Check the gist out: View the code on Gist. Here’s my brief explanation: Line 15-19: We need to hook to these two filters (stylesheet and template) to let WordPress know we’d like to use another theme …

Removing Content From WP API Response When Listing Posts

October 25, 2016March 19, 2016 by Yoren Chang

For many reasons you might want to exclude certain fields from WP API response in certain circumstances. In this short post I’ll be showing you how to remove the “content” field from WP API response when visiting /wp/v2/posts route.

MSE Now Supporting MIME Type And Date Filters

February 29, 2016February 18, 2016 by Yoren Chang

The latest update for my Media Search Enhanced (MSE) plugin will be supporting MIME type and date filters in the Media Library. It’s funny that I never use these filters myself, so in the past two years there was such a major bug in the plugin and I never noticed.

Save Dev Machine Space By Displaying Images From Production Server

February 16, 2016February 13, 2016 by Yoren Chang

Be sure to check out the original post. If you’re on Nginx, just use the following gist for the images URL rewriting. View the code on Gist.

Parent Post From Another Post Type And A New URL Structure In WordPress

October 25, 2016February 5, 2016 by Yoren Chang

Hello, beautiful readers! In this post we are going to solve a very specific need for custom post types in WordPress. I’ve actually written about it two years ago, which is to select post parent from another post type. But today you’ll learn more deeply on the same topic with a live example.

Say there’s a project for building online courses website, we plan to have two custom post types in WordPress, which are “Courses” and “Lessons”. Registering two CPTs won’t be a big deal for us but the not-so-easy part is we’d like to set the URL structure of the lessons in such format:

http://my-online-course.com/lesson/[course-name]/[lesson-name]/

Taking my AngularJS series for example, it would look like:

http://my-online-course.com/lesson/angularjs-wp-api/lesson-1-using-angularjs-in-wp-theme/

So the workflow to manage our online course would be like, we always add a new course first, input some course information, prerequisites, curriculum etc. After that we’ll create as many lessons as needed, and for each lesson, we have to set the “parent post” for it, which is the course it’s attached to.

If you find this use case compelling, keep reading and here’s what I’m going to show you (preview the final demo if you’d like):

Registering two custom post types: Courses and Lessons.
Updating the “Parent” meta box so we can choose a “course” as the parent post for a “lesson”.
Setting the exactly URL structure we want.
Updating the permalink of the CPT to reflect the new URL structure.

Ready? Let’s go!

Getting Categories With Posts In A Single WP API Request

March 3, 2016December 18, 2015 by Yoren Chang

UPDATED March 03, 2016:

Post has been updated. Now we use "rest_prepare_category" filter for this job.

UPDATED March 02, 2016: 

With the latest WP API V2 Beta12, the filter "rest_prepare_term" I used in this post no longer work and it should be changed to "rest_prepare_category". I'll update the post content ASAP.

A while back ago I wrote a post to show you how to “Adding Fields To The JSON Response Of The WP REST API“. In the first scenario why we’ll ever need to add fields to WP API, is for people who want to build an accordion menu with categories as the first level links, which when being clicked, the posts would be collapsed as the second level links.

We know we could use WP API to get a single category info, and we can also get the posts for a certain category, but unfortunately we can’t do both in a single API request.