Ignoring required fields when updating about python-fastjsonschema HOT 4 CLOSED

I don't understand what you mean. Can you provide an example?

from python-fastjsonschema.

When application users add new items, they have to provide all the properties. But if they are changing an existing item, they may only change one or two properties, so the document being validated will only contain those properties and therefore validation will fail if there are required properties defined in schema. In Cerberus validation library, for example, it is possible to provide update=True argument to validate method, in which case no error is raised if required properties are missing.

from python-fastjsonschema.

I would recommend to have one definition without required field and then create second one with added required. So instead of something like that:

DEFINITION = {
    'type': 'object',
    'required': ['name', 'surname'],
    'name': {'type': 'string'},
    'surname': {'type': 'string'},
    'age': {'type': 'number'},
}

def create(data):
    data = fastjsonschema.validate(DEFINITION, data)
    # ...

def update(data):
    data = fastjsonschema.validate(DEFINITION, data, update=True)  # or more clearly ignore_required=True
    # ...

You would have:

DEFINITION_UPDATE = {
    'type': 'object',
    'name': {'type': 'string'},
    'surname': {'type': 'string'},
    'age': {'type': 'number'},
}

DEFINITION_CREATE = copy.deepcopy(DEFINITION_UPDATE)
DEFINITION_CREATE['required'] = ['name', 'surname']

def create(data):
    data = fastjsonschema.validate(DEFINITION_CREATE, data)
    # ...

def update(data):
    data = fastjsonschema.validate(DEFINITION_UPDATE, data)
    # ...

The second version is also better approach because sometimes even during update you would need to require some attributes. It's then more clear what is really needed. It's more explicit. :-)

from python-fastjsonschema.

Yes, you are right. Just ignoring required properties is not enough, there could be properties depending on the value or existence of another property. Thanks for the advice.

from python-fastjsonschema.