I am working on a custom widget plugin for Wordpress. I followed this tutorial which suggests extending the WP_Widget class and calling register_widget() on the widgets_init action.
It works as expected when attempting to add the Widget globally from the "Appearance" settings. However, when editing a post or page, I see plenty of other widgets but not mine?
What am I missing? I've searched quite a bit online. Are theme widgets and post/page widgets two completely different things and I shouldn't be creating a WP_Widget to begin with?