CODEWITHSUNDEEP
pythonpython-3.xvalidationcerberus
Andi
Andi

Reputation: 4865

Python: validation using cerberus

I would like to validate a dict, where a field may contain either an int or a List[int]. Also, all int must be positive.

I need some help with setting up the schema. The schema below are not working properly. They are not checking for negative numbers. That is, negative numbers are passing the validation, which is incorrect.

import cerberus

v = cerberus.Validator()

schema1 = {
    "int_or_list_of_int": {
        "type": ["integer", "list"],
        "schema": {"type": "integer", "min": 0},
    },
}

schema2 = {
    "int_or_list_of_int": {
        "type": ["integer", "list"],
        "valuesrules": {"type": "integer", "min": 0},
    },
}

num1 = {"int_or_list_of_int": 5}
num2 = {"int_or_list_of_int": [5, 10]}
num3 = {"int_or_list_of_int": -5}
num4 = {"int_or_list_of_int": [5, -10]}

# schema 1
assert v.validate(num1, schema1)
assert v.validate(num2, schema1)
assert not v.validate(num3, schema1)  # Evaluates to True
assert not v.validate(num3, schema1)  # Evaluates to True

# schema 2
assert v.validate(num1, schema2)
assert v.validate(num2, schema2)to True
assert not v.validate(num3, schema2)  # Evaluates to True
assert not v.validate(num4, schema2)  # Evaluates to True

Upvotes: 2

Views: 517

Answers (1)

Oleksandr Hiliazov
Oleksandr Hiliazov

Reputation: 370

First of all, schema for int_or_list_of_int should be inside int_or_list_of_int dict. Secondly, min should be applied for both integer (inside int_or_list_of_int) and list (inside schema).

schema = {
    "int_or_list_of_int": {
        "type": ["integer", "list"],
        "min": 0,
        "schema": {"type": "integer", "min": 0}
    }
}

Upvotes: 4

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