mongodb text search with multiple fields

Question

I\'m trying to get mongodb fulltext search with multiple fields working. I\'ve set the index on 3 fields-name,description, category, and verified with

documen

Answer 1

using the example above

db.deals.ensureIndex({ name: "text", description : "text", category : "text" });

Does this mean that I am creating one index or 3, and also can I search just the name or description only, or do I have to always list all 3?

Also, what if I wanted to add another index for phone number?