Remove what you add First, please make sure that everything you add on activation also gets removed on uninstall. I got a short tutorial including example code for you. Test with a small plugin: I really don’t know much about MU, but as far as I can tell, the roles object is global across all … Read more
A small source, perhaps for a plugin to create the solution. At first the php part, there include the javascript for the button inside the Media Manager. Is more usable answer, but the answer of @One Trick Pony was create and the right direction and JS solution. See the result on the image: The resulting … Read more
The easiest way to do this is actually a combination of wp_enqueue_script and the footer actions that Saif and v0idless already referenced. I frequently use jQuery in my themes and plugins, but I put all of the other scripts in the footer as well. The best way to actually queue things up would be this: … Read more
Late answer & edit. Disclaimer: The following is no copy & paste-togo code. Rough Sketch As I never tried misusing the media modal for anything else, here’s a short overview, sketched by breaking out a part from a project I’m currently on. It’s not a ready to go example, but it should bring you close … Read more
AFAIK, there’s no official/standard framework, and there will be as many plugin development styles as there are shades of white in north pole. I’d say WordPress Coding Standards is a blueprint for a good style. You’ll find lots of good examples and excellent coders here in WPSE. A nice starting point: questions/tagged/plugin-development. Highlighting: Objective Best … Read more
Well, if I take the hat of a WP script kiddie, my answer would be: use post_meta, always. However, I happen to know a thing or two about databases, so my answer is: never, ever, ever, use an EAV (aka the post_meta table) to store data that you might to need to query. On the … Read more
There are many themes and plugins using jQuery as loaded by WP core. Every time jQuery is updated, there is a risk of older themes and plugins breaking (because lots of them are still used but no longer updated). That’s why you also see jquery-migrate.js in your source code. It’s a script that catches old … Read more
It’s best practice to always use prepare but the main use of it is to prevent against SQL injection attacks, and since there is no input from the users/visitors or they can’t effect the query then that is not an issue in your current example. But like I said before it’s best practice to use … Read more
If you take a look into the WordPress documentation you will find WordPress Taxonomies term_id is the ID of a term in the terms table term_taxonomy_id is a unique ID for the term + taxonomy pair.
For the record, I mainly make whole Web sites and plugins, and deploy them. My workflow is very Ruby- and git-heavy. To start out on a new project, I have a shell script which takes care of the whole business of setting up a new vhost and checking out the latest tag of WordPress (from … Read more