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Validating values of dicts with arbitrary/unknown names of keys - is it possible..?

See original GitHub issue

Having a document like this one:

    document = {
        'aaa': {
            'bbb': [
                {'ddd': {'xxx': 123, 'yyy': 'some string'}},
                {'eee': {'zzz': 555}},
            ],
            'ccc': [
                {'ddd': {'xxx': 789, 'yyy': 'some other string'}},
            ]
        }
    }

…I can validate it with the following schema:

    schema = {
        'aaa': {
            'type': 'dict',
            'schema': {
                'bbb': {
                    'type': 'list',
                    'schema': {
                        'type': 'dict',
                        'schema': {
                            'ddd': {
                                'type': 'dict',
                                'schema': {
                                    'xxx': {'type': 'integer'},
                                    'yyy': {'type': 'string'},
                                },
                            },
                            'eee': {
                                'type': 'dict',
                                'schema': {
                                    'zzz': {'type': 'integer'},
                                },
                            }
                        }
                    }
                },
                'ccc': {
                    'type': 'list',
                    'schema': {
                        'type': 'dict',
                        'schema': {
                            'ddd': {
                                'type': 'dict',
                                'schema': {
                                    'xxx': {'type': 'integer'},
                                    'yyy': {'type': 'string'},
                                },
                            }
                        }
                    }
                }  # /ccc
            }
        }  # /aaa
    }

…but the thing is, I need the possibility to use arbitrary names for keys bbb and ccc (and yes, there may be an arbitrary number of them on this level). In other words, how can I validate their values (which are lists of ddd and eee dicts, and those dicts always have the same structure), without knowing their names…? Is something like that possible with Cerberus…?

Issue Analytics

State:
Created 8 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

xor-xorcommented, May 21, 2015

Yep, keyschema did the trick:

schema = {
    'aaa': {
        'type': 'dict',
        'keyschema': {
            'type': 'list',
            'schema': {
                'type': 'dict',
                'schema': {
                    'ddd': {
                        'type': 'dict',
                        'schema': {
                            'xxx': {'type': 'integer'},
                            'yyy': {'type': 'string'},
                        },
                    },
                    'eee': {
                        'type': 'dict',
                        'schema': {
                            'zzz': {'type': 'integer'},
                        },
                    }
                }
            }
        }
    }
}

Thanks! 😃

And by the way - I think that renaming keyschema to valueschema is a good idea! 👍

0reactions

funkyfuturecommented, May 20, 2015

and you may have a look at #83.

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