Method: Mongoid::Tasks::Database#remove_undefined_indexes

Defined in:
lib/mongoid/tasks/database.rb

#remove_undefined_indexes(models = ::Mongoid.models) ⇒ Hash{Class => Array(Hash)}

Remove indexes that exist in the database but aren’t specified on the models.

Examples:

Remove undefined indexes.

Mongoid::Tasks::Database.remove_undefined_indexes

Returns:

  • (Hash{Class => Array(Hash)}) —

    The list of indexes that were removed by model.



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# File 'lib/mongoid/tasks/database.rb', line 118

def remove_undefined_indexes(models = ::Mongoid.models)
  undefined_indexes(models).each do |model, indexes|
    indexes.each do |index|
      key = index['key'].symbolize_keys
      collection = model.collection
      collection.indexes(session: model.send(:_session)).drop_one(key)
      logger.info(
        "MONGOID: Removed index '#{index['name']}' on collection " +
        "'#{collection.name}' in database '#{collection.database.name}'."
      )
    end
  end
end