I am developing a slideshow extension for Joomla 3.x. The extension consist of a component in which you can create categories and create slides. When creating slides, you assign each one to a category. The component uses Joomla's core com_categories component in order to create the categories. The component also utilises Joomla's MVC structure (I've tried to keep things as close to core as possible).
The next part of the extension is a module. The module displays the slides from a specific category (or it should).
Everything is fully built and working apart from one feature: The module currently displays all slides regardless of category. When editing the module in Joomla I can select the category I want but I don't know how to get the module to show just the slides from that category.
You can download the module at: Slideshow Module