MongoDB fulltext search + workaround for partial word match

Question

Since it is not possible to find \"blueberry\" by the word \"blue\" by using a mongodb full text search, I want to help my users to complete the word \"blue\" to \"blueberry\".

Answer 1

Don't know if this might be useful to some new people facing this problem.

Depending on the size of your collection and how much RAM you have available, you can make a search by $regex, by creating the proper index. E.g:

db.collection.find( {query : {$regex: /querywords/}}).sort({'criteria': -1}).limit(limit)

You would need an index as follows:

db.collection.ensureIndex( { "query": 1, "criteria" : -1 } )

This could be really fast if you have enough memory.

Hope this helps.