Suggestions for a content type recipe? Currently I am building two content types, and I would like to consolidate them into one. Here is the scenario. I have two content types - Restaurants and Shops. These two have exactly identical fields except for 'Category' which is a taxonomy list. For restaurants, the taxonomy list contains restaurant food categories (asian, italian, etc) and 'shop type' for shops (fashion, electronics, etc).  The only reason I have two content types is so that I can enforce the category field which is required.

However, in my mind it seems like it would be better to just have one content type.  What I would like to do is create a 'Business' content type where you then select what type of business. In this case, Shop or Restaurant, for example. When the appropriate Business type is selected, the corresponding taxonomy to describe that particular selection will become apparent, and be able to be enforced. So, if I choose 'restaurants' then the restaurant types list will become visible where as selecting shops will display the shop type list.

Any thoughts on the best way to handle this architecture?
You can use a Taxonomy vocabulary with 2 level heirachy. Something like this:




Restaurants

Restaurant type 01 
Restaurant type 02
...

Shops

Shop type 01
Shop type 02
...