How do I set a tag via cookie and filter content on the whole site based on that tag? I have a site which has different tags for different cities. Most of the content on the site is either for all cities or a set of specific cities. I am planning to have all the content pieces taggable via taxonomy references. Within my template I want a dropdown which sets the current city. What is the easiest way to only show correct content based on this drop down througout the site?
you can build a view to show your content, then add a "filter" for the city term and "expose it" to your visitors. There is an option to remember the selection for each user.