python - Python Cerberus: multipe schemas for a single filed?

Question

I am trying to use Cerberus to validate some data but I run into a problem.

I defined several smaller schema such as:

A = {"type": "dict", "required": False, "schema": {"name": {"type": "string"}}}

B = {"type": "dict", "required": False, "schema": {"age": {"type": "integer"}}}

C = {"type": "dict", "required": False, "schema": {"gender": {"type": "string"}}}

And the higher level schema is like:

{"something": {"type": "list", "schema": "type": [A, B, C]}}

This obviously doesn't work.

I want to validate a list, the elements in which only need to be validated by one of (A, B, C). I don't know how to do that with Cerberus and am looking for some help.

Thanks.

Answer 1

尝试这个：

A = {"type": "dict", "schema": {"name": {"type": "string"}}}
B = {"type": "dict", "schema": {"age": {"type": "integer"}}}
C = {"type": "dict", "schema": {"gender": {"type": "string"}}}

schema = {'field':{'type':'list','anyof_schema':[A,B,C]}}

v = Validator(schema)

challenge = {'field':[{'name':'a name'}]}

v.validate(challenge)
True

这要归功于anyof_*，这是所谓的 of-rules提供的几个选项之一。这些规则允许您定义不同的规则集进行验证。如果根据前缀逻辑all、any、one或none对列表中的集合进行验证，则该字段将被视为有效。有关详细信息，请参阅相关文档。