Filter a view by user-created tags in Drupal?

I'd like to add a block to the user profile that shows them content listings in their groups based on tags that they have in their profile.

(ie: someone puts a bike up for sale, the user has listed "bike" on their wishlist, it should show 开发者_如何学Cup to get their attention)

Since these tags vary user-to-user, I'm not sure exactly how to set up the filter.

Going a little farther, can I sort them by the number of matching tags?

I've found that taxonomy terms and views can be very tricky to get right. The main problems is that taxonomy terms has a one to many relationship with nodes, and views is built to be generic.

It might be quicker to create such a block in a custom module instead, because you may very well get stuck in views before getting what you want. Also you most likely have to create your own sort plugin for views, to get the sorting you want. I haven't seen any module creating something like that, and I don't think it's possible with views core. Creating plugin for views can be very harry, the first time you do it, so unless you know your way around views, I think you will have more luck just creating a block yourself. It's much simpler, than having to extend the views functionality.

Have you looked into Views? You can set up a block with views that retrieves (almost) ANY information from the database.

In your case, you can filter the information that you need and that belongs to the current user, also, sorting is doable via the Views administration.