Today my User Switching plugin for WordPress turns ten years old.
Its active user base passed 100,000 last year which I think classifies it as moderately popular. For a plugin that’s primarily developer-oriented that’s a good number.
User Switching is a very tightly focused plugin. It allows users to:
- Switch to other users
- Switch back again
- Switch off (temporarily log out)
I consider the plugin was feature complete just a few weeks after the first version. Version 0.2 in 2009 added the ability to switch back to the user’s previous account, and with that addition the plugin did all that I wanted it to do. So what’s changed over the last ten years?
Actions and Filters
Several hooks have been added to User Switching so other developers can trigger actions when a user switches between accounts. The hooks were added in version 0.6 in 2012 and are documented here in the FAQ.
If you switch to another user that has the ability to manage users on the site (for example by switching to another Administrator), you can subsequently switch from that account into another. You can then switch back to the administrator you first switched to, and switch into another account again, or switch back to your original account to complete the switching process.
Sure this workflow isn’t a particularly common one, but it’s been fully supported by User Switching since version 0.8 was released in 2013.
Expirable user sessions were implemented in WordPress 4.0 in 2014. When switching between users with User Switching, this meant that an extra user session was created every time you switched, and also every time you switched back.
It took me three attempts, four years, and a test-driven development approach to finally implement the retention, reuse, and destruction of user sessions when switching (to avoid extra sessions being created every single time you switch or switch back), and this was finally added in version 1.4 in 2018.
Not Much Else
That’s about it. All the other changes that have been made to User Switching over the years have been relatively minor tweaks and support for changes in or additions to WordPress core, plus a bit of extended support for Multisite, BuddyPress, and bbPress to ensure the process of switching between users is as seamless as possible.
I’m wary of calling anything “complete’, but User Switching is about as close to complete as I’ll ever get with any piece of code.
That said, I’m waiting for the release of WooCommerce 3.6 which will allow me to release an update to User Switching so it will more gracefully handle the shopping basket contents when switching between users. Supporting third party plugins greatly increases the maintenance burden, but WooCommerce is sufficiently popular (and this bug is sufficiently annoying) for me to decide to address it.
Here’s to ten more years of WordPress plugins! (Query Monitor also turns ten later this year.)