Output errors as dict

[pyeve]

Output errors as dict

[nicolaiarocci]

I've been experimenting with this and while it looks good on paper, I think that it would introduce unneeded complexity, especially in the schema case, where it would cause nested dictionaries combined with lists of errors. Consider this scenario:

>>> schema = {'rows': {'type': 'list', 'schema': {'type': 'dict', 'schema': {'sku': {'type': 'string'}, 'price': {'type': 'integer'}}}}}
>>> document = {'rows': [{'sku': 123', 'price': '100'}, {'sku': 'KT123', 'price': 'AA'}]}
>>> v = Validator()
>>> v.validate(document, schema)
False

>>> v.errors

Would return something like

{'rows': {'0': {'sku': 'not a string', 'price': 'not an integer'}, 1: {'price': 'not an integer'}}}

or the positional and possibly more readable alternative:

{'rows': [{'sku': 'not a string', 'price': 'not a string'}, {'price': 'not an integer'}]}

This in addition to the fact that now you can have lists of errors for every field, even in normal circumstances; and repeated errors for different fields (missing fields for example, in the current implementation are simply listed as a single error. In a dict implementation you would have all fields as keys with the same error repeated), making the errors list too verbose.

Doesn't look pretty or useful IMHO. Besides, there haven't been other requests for this feature. I'm leaving this ticket on hold, to give it a fair chance and visibility (in case more people need/ask for this).