Python Eve中的仅时间字段

from eve import Eve
from eve.io.mongo import Validator

app = Eve()

class MyValidator(Validator):
    def _validate_type_time(self, field, value):
        if not isinstance(value, str) or not value:
            self._error(field, "value must be a non-empty string")

app.validator = MyValidator

app.config['DOMAIN'] = {
    'my_resource': {
        'schema': {
            'time_field': {
                'type': 'time'
            }
        }
    }
}

if __name__ == '__main__':
    app.run()