def get_i18n_field_param(Model, i18n_field, param_name):
    """
    Return i18n_param from Model.i18n_field_params dict if exists
    or get param from i18n_field
    """
    if hasattr(Model, "i18n_field_params") and param_name in Model.i18n_field_params:
        return Model.i18n_field_params[param_name]
    return getattr(i18n_field, param_name)