Columns Validation Patterns (`tendril.validation.columns`)¶

exception tendril.validation.columns.RequiredColumnMissingError(policy, missing_column)[source]¶

Bases: tendril.validation.base.ValidationError

msg = 'Required Column Missing'¶

render()[source]¶

class tendril.validation.columns.ColumnsRequiredPolicy(context, required_columns)[source]¶

Bases: tendril.validation.base.ValidationPolicy

property required_columns¶

check(columns)[source]¶