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Using original input data
-------------------------
If you want to use the original, unprocessed input, you can add ``pass_original=True`` to
`post_load <marshmallow.decorators.post_load>` or `validates_schema <marshmallow.decorators.validates_schema>`.
.. code-block:: python
from marshmallow import Schema, fields, post_load, ValidationError
class MySchema(Schema):
foo = fields.Int()
bar = fields.Int()
@post_load(pass_original=True)
def add_baz_to_bar(self, data, original_data, **kwargs):
baz = original_data.get("baz")
if baz:
data["bar"] = data["bar"] + baz
return data
schema = MySchema()
schema.load({"foo": 1, "bar": 2, "baz": 3})
# {'foo': 1, 'bar': 5}
.. seealso::
The default behavior for unspecified fields can be controlled with the ``unknown`` option, see :ref:`Handling Unknown Fields <unknown>` for more information.
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