WooCommerce

I am starting to have more and more tutorials about REST API on my blog which is for sure because I am doing some work with my crossposting plugin.

Today is another one where I am going to share with you a simple code example how you can add Product image and Product gallery images when creating a product with REST API.

Just in case I mean these things:

Let’s assume that you have a WordPress multisite network installed and some (or all) of the sites of the network are WooCommerce stores.

The thing is that sometimes you may need to sync WooCommerce products between the sites of your multisite network.

Because we are talking about WordPress Multisite we are not going to work with REST API, the tutorial will be all around switch_to_blog() function and CRUD layers.

There is also a tutorial on my blog about creating products programmatically where I slightly cover the product variations.

But there are still a couple moments I would like to discuss more thoroughly, I came to them when I was doing the variable products crossposting for my multisite crossposting plugin.

In this tutorial I will show you how to get a product or a product variation object in WooCommerce if you only know its SKU. It is easy-peasy when we get a product object by ID, we just have to use wc_get_product() function, but we can not pass SKU to that function.

So I am going to show you three different ways how you can obtain a product object from SKU, we are going to do it both WooCommerce-way (with WP_Product_Query and with wc_get_product_id_by_sku() function) and WordPress-way (with WP_Query).

In this tutorial I will show how you can change the way the variation selection is working on the product page in WooCommerce.

We all know that by default the variations are displayed like a select dropdown.

But today we will learn how to display them as color swatches. If you would like to display them as size buttons or custom images, you can do it with my plugin.

This is our goal for this tutorial:

Long time ago I published a tutorial where I described how to add custom fields to WooCommerce products. Now it is time to dive deep into product variations and add a couple settings fields there as well.

It seems like my complete payment gateway tutorial is not that complete after all. I didn’t mention there how you can validate payment gateway admin options.

For example let’s assume that we have to validate a USDT address of a TRON network. Here is how it should work:

Let’s assume that we’ve already added a field for a USDT address inside init_form_fields() method. Just like that: