docs: def _connect_database(config):
      """Create simple connection with Mongodb
  
      config comes with settings from .ini file.
      """
      settings = config.registry.settings
  
      mongo_uri = "mongodb://localhost:27017"
      mongodb_name = "test"
  
      if settings.get("mongo_url"):
          mongo_uri = settings["mongo_url"]
  
      if settings.get("mongodb_name"):
          mongodb_name = settings["mongodb_name"]
  
      return mongoengine.connect(mongodb_name, host=mongo_uri)