wordpress – Page 27 – Türker Yıldırım

wc_get_orders is the query you should be using

NoteJune 14, 20162 min read

Orders are posts, so WP_Query works and every example on the internet uses it — with a post_type of shop_order, a meta query for the customer, and a…

One large autoloaded option is on every single request

NoteJune 9, 20161 min read

The failure mode is not a slow query. It is one option holding a megabyte of serialised data, fetched and unserialised on every request, quietly adding both to…

wp_die is the wrong way to fail an AJAX request

NoteMay 28, 20161 min read

wp_die() in an AJAX handler sends an HTML error page with a 200 status, so the JavaScript sees a successful response containing markup and fails while parsing it.…

Order status transitions have hooks of their own

NoteMay 5, 20162 min read

Hooking save_post to react to an order being paid works occasionally and misses every transition made from a payment gateway callback, the REST API or WP-CLI. The status…

wp_cache_add refuses to overwrite; wp_cache_set does not

NoteApril 7, 20161 min read

The two look interchangeable and differ on whether the key already exists: set() overwrites unconditionally, add() fails and returns false. That failure is the useful part. With a…

Turning revisions off for one post type

NoteApril 7, 20161 min read

WP_POST_REVISIONS is a constant, so it applies to the whole site. A catalogue whose products are updated by a nightly import does not want a revision per product…

wp_insert_post fires every hook the editor fires

NoteMarch 28, 20162 min read

An import loop calling wp_insert_post() is doing everything a human clicking Publish does: revisions, term counting, ping status, and every plugin listening on save_post. For ten posts that…

register_rest_route needs the feature plugin until 4.7

NoteFebruary 17, 20161 min read

4.4 shipped the REST API infrastructure — the server, the routing, register_rest_route() — and none of the content endpoints. So the function exists on a stock install and…

The options table autoloads everything not marked otherwise

NoteJanuary 26, 20161 min read

Every option with autoload = yes is fetched in a single query on every request and held in memory for the whole of it. That is the right…

add_option and update_option disagree about the autoload flag

NoteJanuary 22, 20161 min read

add_option() takes an autoload argument. update_option() takes one too — and until recently ignored it for an option that already existed, so a plugin that only ever calls…