CODEWITHSUNDEEP
pythondictionarycerberus
Prime
Prime

Reputation: 215

In Cerberus (Python) is there a way to create a schema that allows any key name in a dictionary?

Given a dictionary where the top level keys can be any value, but there is a strict schema within the values of those keys:

{"rand_value": ["key1": "val1", "key2": "val2"], "another_rand_value": ["key1": "val1", "key2": "val2"]}

Can I create a Cerberus schema which will enforce this?

Upvotes: 1

Views: 915

Answers (1)

kindall
kindall

Reputation: 184221

Cerberus must know the field name so it can determine which validation rule applies to it, so you can't do exactly what you're asking. There are no "top level" rules that apply to the whole document, and Cerberus doesn't support wildcards for field names.

You can, however, build a schema "on the fly" based on the actual field names present in the document, then validate against that.

v = cerberus.Validator()
document = {"rand_value": {"key1": "val1", "key2": "val2"}, 
            "another_rand_value": {"key1": "val1", "key2": "val2"}}
fieldrule = {"type": "dict", "keysrules": {"type": "string"}}   # etc
v.validate(document, {field: fieldrule for field in document})

Upvotes: 1

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