def load(self, data, *, many=None, partial=None, unknown=None, **kwargs):
# When being passed in via the query string, we may get the raw JSON string instead of
# the deserialized dictionary. We need to unpack it ourselves.
if isinstance(data, str):
try:
data = json.loads(data)
except json.decoder.JSONDecodeError as exc:
raise ValidationError({
"_schema": [
f"Invalid JSON value: '{data}'",
str(exc),
],
})
elif isinstance(data, QueryExpression):
return data
if not self.context or "table" not in self.context:
raise RuntimeError(f"No table in context for field {self}")
if not data:
return NothingExpression()
try:
tree_to_expr(data, self.context["table"])
except ValueError as e:
raise ValidationError(str(e)) from e
return super().load(data,
many=many,
partial=partial,
unknown=unknown,
**kwargs)
def _load(self, value, data, partial=None):
_data = super()._load(value, data, partial=partial)
return tree_to_expr(_data, table=self.metadata["table"])