def get_column(column, base = @base)
      base.columns_hash[column.to_s] if base._metasearch_attribute_authorized?(column, self)
    end
def get_column(column, base = @base)
      base.columns_hash[column.to_s] if base._metasearch_attribute_authorized?(column, self)
    end
Initialize a new Builder. Requires a base model to wrap, and supports a couple of options
 for how it will expose this model and its associations to your controllers/views.