Show Hide select options based on previous selection dropdown
Thanks for reading my question... ;-)
I'm building a Wordpress site that uses Custom Posts and Custom Fields to show a vehicle inventory. I would like the visitor to be able to filter the posts by Taxonomies...
The plugin I use for drilling the available Taxonomies (Query Multiple Taxonomies) outputs all options it can find for that particular Taxonomy into a dropdown list.
To prevent the dropdown list (i.e. Model) to become too long, I would like to show only those options that are based on the previous selection.
So when the visitor selects Vehicle = Cars, the dropdown for Manufacturer should only show the car manufacturers. When the visitor selects a manufacturer, i.e. Ford, the next dropdown for selecting a model should only show the models available for the previous selected manufacturer, in this case Ford...
The labels and level-0 values don't change but when I add or change a manufacturer or model, the level-1 and/or level-2 changes.
Not that important but, if possible, it would also be nice to strip everything not needed to show up in the "filtered" dropdown. In case of the Manufacturer dropdown, level-0 and all the spaces are not needed. In case of the Model dropdown, level-0, level1 and all the spaces are not needed after selection.