# Proposed explain invocation with a verbosity parameter from Mongoid
User.where(_id: "5db7231f03881d09d23cca7d").explain(:query_planner)

# First we need the database reference from the Ruby driver (not Mongoid)
db = User.collection.database
# Next we need to generate the `find` command that will be sent to the explain method
cmd = { find: 'users', filter: { _id: "5db7231f03881d09d23cca7d" } }
# We then send the command params to the explain command with our desired verbosity
result = db.command(explain: cmd, verbosity: 'queryPlanner')
# Since the result is a Mongo::Operation::Result (not a hash) we have to extract the
# results from the `documents` array would contain the explain plan
result.documents.first